854 terms · clinical + plain-English definitions · ClearFusion Lab
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Digital Dentistry · Intermediate · Core · lab
Clinical: Additive manufacturing technology that builds dental objects layer by layer from photopolymer resins, used for models, surgical guides, night guards, and provisional restorations.
Plain English: A process that builds dental parts layer by layer from special resins — used to make models, night guards, and temporary crowns.
Pathology · Intermediate · Nice-to-know · student
Clinical: A non-carious cervical lesion (NCCL) characterized by a wedge-shaped notch at the cervical area of a tooth, theorized to result from stress concentration caused by flexure of the tooth under off-axis occlusal loading; the etiology remains debated and is often multifactorial.
Plain English: A wedge-shaped notch at the gum line of a tooth — thought to be caused by the tooth bending slightly under chewing forces, though the exact cause is still debated among researchers.
Pathology · Basic · Core · student
Clinical: The pathological wear of tooth structure caused by mechanical forces from external objects; most commonly caused by overzealous toothbrushing with a hard-bristle brush, producing V-shaped notches at the cervical margin of teeth, typically on the buccal surfaces.
Plain English: Tooth wear caused by mechanical action from outside the mouth — most often aggressive toothbrushing, which creates notches at the gum line on the outside of teeth.
Pathology · Basic · Core · student, front-desk
Clinical: A localized collection of pus in oral tissues, classified as periapical (at the root apex of a nonvital tooth, endodontic in origin) or periodontal (within the supporting structures of a vital tooth). Both result from bacterial infection and require prompt treatment.
Plain English: A painful pocket of infection near a tooth root or in the gums, causing swelling and sometimes a bad taste. It needs treatment right away.
Implant · Intermediate · Core · student, lab
Clinical: A connector component attached to a dental implant that supports and retains a prosthetic crown, bridge, or overdenture.
Plain English: The small post that sits on top of your implant and holds your new tooth in place.
Implant · Intermediate · Core · student, front-desk
Clinical: The specific rotational force (measured in Newton-centimeters) applied to tighten the implant abutment screw or prosthetic screw to the manufacturer's recommended specification; correct torque is essential for maintaining the implant-abutment connection and preventing screw loosening.
Plain English: The precise tightening force used to secure the abutment screw in a dental implant — too little and the screw loosens, too much and it can fracture; each implant system has its own specified value.
Specialty · Advanced · Core · front-desk
Clinical: The total amount owed to a dental practice for services already rendered but not yet collected, from both patients and insurance companies; managing accounts receivable (AR) is critical to practice financial health; a healthy AR has minimal amounts aged beyond 90 days.
Plain English: The money owed to the dental office for services already provided — tracking and collecting it efficiently is one of the most important financial tasks in running a practice.
Specialty · Basic · Core · student
Clinical: An analgesic and antipyretic used alone or in combination with NSAIDs or opioids for dental pain management; works centrally without anti-inflammatory effects or GI/renal side effects; maximum recommended dose is 4g/day (3g/day in elderly or hepatic patients).
Plain English: Tylenol — used for dental pain relief, especially for patients who can't take ibuprofen; it reduces pain and fever but doesn't reduce swelling.
Materials · Basic · Core · student
Clinical: The application of 30–40% phosphoric acid to enamel (and sometimes dentin) for 15–30 seconds to create a micro-porous surface that improves mechanical adhesion of resin-based materials.
Plain English: Using a mild acid gel on your tooth for a few seconds to create tiny pores that help the filling material grip tightly to the tooth.
Materials · Basic · Core · student
Clinical: The application of phosphoric acid gel (37%) to enamel or dentin to remove the smear layer, demineralize the surface, and create micro-porosities that increase surface area for micromechanical bonding of adhesive resins.
Plain English: Applying a mild acid to the tooth surface before placing a filling — it creates tiny pores in the enamel so the adhesive can grip and lock in for a strong bond.
Insurance · Intermediate · Core · student, front-desk
Clinical: The American Dental Association's Code on Dental Procedures and Nomenclature (CDT); the standardized alphanumeric coding system used for billing dental procedures on claims to insurance carriers; codes begin with 'D' followed by 4 digits (e.g., D0120 periodic evaluation, D2740 crown — porcelain/ceramic substrate); updated annually.
Plain English: The standard billing codes used to describe dental procedures on insurance claims — each treatment has its own D-code that tells the insurance company exactly what was done.
Insurance · Basic · Nice-to-know · front-desk
Clinical: A decision by a health plan to deny, reduce, or terminate coverage or payment for a requested or provided service.
Plain English: A formal decision from your plan saying it will not pay for a service or will pay less than requested.
Specialty · Intermediate · Core · student, front-desk
Clinical: Dental procedures that produce significant quantities of droplets and aerosols potentially containing blood and saliva, including ultrasonic scaling, high-speed handpiece use, air-water syringes, and air polishing; appropriate respiratory PPE and engineering controls are required.
Plain English: Dental procedures that spray fine mist into the air — like using the high-speed drill or ultrasonic cleaner — which can carry germs and requires proper masks and ventilation.
Pathology · Advanced · Core · student
Clinical: Rapidly progressive form of periodontitis that often affects younger individuals and may have a familial pattern.
Plain English: A fast-moving form of gum disease that can cause serious bone loss in younger patients.
Procedure · Intermediate · Nice-to-know · student, pediatric
Clinical: A minimally invasive cavity preparation technique using a fine stream of aluminum oxide or bioactive glass particles propelled by compressed air to remove decay and prepare the tooth surface without heat, vibration, or anesthesia in many cases; used for small carious lesions and for preparing enamel for sealants and composites.
Plain English: A drill-free way to remove small cavities by blasting a fine powder stream at the tooth — often quieter and less frightening for patients, and sometimes doesn't require numbing.
Radiology · Basic · Core · student, front-desk
Clinical: An acronym for 'As Low As Reasonably Achievable'; a radiation safety principle requiring that radiation exposure to patients and staff be kept as low as possible while still obtaining diagnostically useful images.
Plain English: A safety rule in dental X-rays meaning we use only as much radiation as needed to get the information we need — no more.
Materials · Basic · Core · student, lab
Clinical: An irreversible hydrocolloid impression material derived from seaweed (alginic acid); mixed with water to a gel consistency and used for diagnostic impressions, study models, and orthodontic records due to its ease of use and low cost.
Plain English: A powder mixed with water to make a rubbery impression material — similar to the putty used to take a mold of your teeth for study models or retainers.
Implant · Advanced · Core · student, front-desk
Clinical: A full-arch implant-supported prosthesis concept in which four implants (two axial and two tilted posteriorly at up to 45°) support a fixed complete denture, reducing the need for bone grafting by utilizing available anterior and posterior bone.
Plain English: A way to replace all your teeth using just four implants that support a fixed full set of teeth — avoiding the need for bone grafts in most cases.
Implant · Advanced · Core · student, front-desk
Clinical: A full-arch implant rehabilitation protocol using four implants (two axial anterior and two tilted posterior at up to 45°) to support a fixed prosthesis without sinus grafting; allows immediate loading with a provisional bridge the same day as surgery.
Plain English: A technique to replace all teeth in one jaw using just four implants — the back two are angled to maximize bone contact, and a full-arch bridge can often be attached the same day.
Oral Surgery · Intermediate · Core · student
Clinical: Bone graft material derived from human donors (cadaveric bone) that has been processed, sterilized, and banked; may be mineralized (FDBA) or demineralized (DFDBA) to expose bone morphogenetic proteins; osteoconductive and potentially osteoinductive.
Plain English: Bone graft material from a human donor that has been carefully processed and sterilized — it provides a scaffold and may also stimulate your own bone to grow.
Insurance · Basic · Nice-to-know · front-desk
Clinical: Maximum payment a plan uses to determine benefits for a covered service; the plan pays a portion and the patient owes any applicable cost sharing.
Plain English: The discounted price your insurance uses to figure what it will pay and what you may owe.
Insurance · Intermediate · Core · front-desk
Clinical: An insurance policy provision in which the carrier pays only for the least costly treatment that it considers adequate for the diagnosed condition, regardless of which treatment the dentist actually provided; the patient is responsible for the cost difference.
Plain English: An insurance policy where the plan only pays for the cheapest acceptable treatment — if you choose a better option, you pay the difference.
Anatomy · Basic · Core · student
Clinical: The portion of the maxilla and mandible that forms and supports the tooth sockets (alveoli); remodels in response to orthodontic forces and tooth loss.
Plain English: The jawbone that surrounds and holds your teeth in their sockets.
Anatomy · Intermediate · Core · student, radiology
Clinical: The most coronal portion of the alveolar bone surrounding the teeth; its level relative to the CEJ is used to assess bone loss on periapical radiographs.
Plain English: The top edge of the bone that holds your teeth in place; dentists look at this on X-rays to check for bone loss.
Anatomy · Basic · Core · student
Clinical: The thickened ridge of bone that contains and supports the tooth sockets (alveoli); part of both the maxilla and mandible; undergoes significant resorption following tooth extraction due to the absence of functional loading from the periodontal ligament.
Plain English: The part of the jawbone that holds the tooth sockets — when teeth are removed, this bone shrinks significantly over time because it no longer has the stimulation from the tooth's root.
Oral Surgery · Intermediate · Nice-to-know · student
Clinical: Surgical reshaping of the alveolar ridge, typically performed at the time of extraction, to create a smooth contour suitable for a prosthesis.
Plain English: Shaping of the jawbone after tooth removal to prepare for dentures or implants.
Materials · Basic · Nice-to-know · student, lab
Clinical: Direct restorative material composed of a mixture of mercury with silver, tin, copper, and zinc alloy particles.
Plain English: A silver-colored filling made from a mix of metals.
Procedure · Basic · Nice-to-know · student, front-desk
Clinical: Placement of a silver-colored amalgam restorative material into a prepared cavity to restore form and function.
Plain English: A silver-colored filling used to repair a cavity.
Pathology · Advanced · Core · student
Clinical: The most common benign but locally aggressive odontogenic tumor; arises from ameloblasts or enamel organ epithelium; solid/multicystic variant most common; mandible (molar-ramus area) most frequent location; radiographically: multilocular 'soap bubble' or 'honeycomb' radiolucency.
Plain English: A type of jaw tumor that grows from the cells that originally formed tooth enamel — it's benign but aggressive and tends to come back if not completely removed, requiring jaw surgery.
Specialty · Intermediate · Core · student, front-desk
Clinical: A broad-spectrum aminopenicillin antibiotic; first-line antibiotic for dental infections with systemic signs (cellulitis, lymphadenopathy, fever, trismus) in penicillin-tolerant patients; also used for antibiotic prophylaxis before invasive dental procedures in at-risk patients.
Plain English: The most common antibiotic prescribed in dentistry — used when a dental infection has spread beyond the tooth, or as a preventive single dose before dental procedures in patients with certain heart conditions.
Specialty · Basic · Core · student, front-desk
Clinical: The first-line antibiotic for dental infections in non-penicillin-allergic patients; a broad-spectrum aminopenicillin effective against most oral streptococci and anaerobes; also used for antibiotic prophylaxis before certain dental procedures in at-risk patients.
Plain English: The most commonly prescribed dental antibiotic for tooth and gum infections — taken as a pill and effective against the bacteria most often found in dental infections.
Specialty · Intermediate · Core · student, front-desk
Clinical: A stepped approach to managing acute dental pain, beginning with non-opioid analgesics (NSAID + acetaminophen combination) as first-line, then weak opioids (tramadol) only if insufficient, and strong opioids reserved for post-surgical cases; reflects the current emphasis on opioid-sparing dentistry.
Plain English: The step-by-step approach to managing dental pain — starting with ibuprofen and Tylenol together (often as effective as opioids), and only escalating to stronger medications when truly needed.
Orthodontics · Intermediate · Core · student
Clinical: The resistance to unwanted tooth movement during orthodontic treatment; the structural support (teeth, bone, or implants) that a force is applied against to move target teeth.
Plain English: The 'anchor' we use when moving teeth — certain teeth or devices hold firm so we can push or pull other teeth into the right position.
Orthodontics · Intermediate · Core · student
Clinical: The resistance to unwanted tooth movement in orthodontics; refers to the teeth, bone, or skeletal structure used as a fixed base against which force is applied to move other teeth; classified as maximum (molars must not move), moderate, or minimum anchorage depending on the treatment goal.
Plain English: The fixed point in orthodontics against which force is applied to move other teeth — the back molars usually serve as the anchor, and keeping them from moving is critical in extraction cases.
Oral Medicine · Advanced · Core · student, front-desk
Clinical: A rapid, deep swelling of the skin, mucosa, and submucosa that can involve the lips, tongue, floor of the mouth, and larynx; in dentistry, it may be triggered by local anesthetics (latex allergy, allergic reaction), ACE inhibitor medications, or C1 esterase inhibitor deficiency; laryngeal involvement is life-threatening.
Plain English: Sudden, deep swelling of the lips, tongue, or throat — a serious allergic or drug reaction that can block the airway; dental teams must be prepared to respond immediately.
Orthodontics · Intermediate · Nice-to-know · student, lab
Clinical: Edward Angle's system for classifying malocclusion based on the mesiodistal relationship of the maxillary first molar to the mandibular first molar (Class I, II, III).
Plain English: A system that describes how your upper and lower teeth bite together — whether they line up correctly or not.
Oral Medicine · Basic · Core · student, front-desk
Clinical: Inflammation, erythema, and fissuring at the corners of the mouth (commissures), often caused by a Candida albicans infection, nutritional deficiencies (iron, B12, folate), or loss of vertical dimension in denture wearers.
Plain English: Redness, cracking, and soreness at the corners of your mouth — it can be caused by a fungal infection, nutritional deficiency, or ill-fitting dentures that change the bite.
Pediatric · Basic · Core · student, front-desk, pediatric
Clinical: A congenital condition in which the lingual frenum is short, thick, or attaches too close to the tongue tip, restricting tongue mobility; may cause breastfeeding difficulties in infants, speech articulation errors, and inability to reach the palate.
Plain English: A condition where the tissue under the tongue is too short or tight, limiting how far the tongue can move — it can interfere with breastfeeding, eating, and certain speech sounds.
Pathology · Intermediate · Core · student
Clinical: The fusion of the tooth root to the surrounding alveolar bone through ossification of the periodontal ligament space, causing the tooth to become immovable; often seen in over-retained primary teeth and following trauma.
Plain English: When a tooth becomes fused to the jawbone and can no longer move — ankylosed teeth appear to be sinking as the surrounding bone and adjacent teeth continue to grow.
Pediatric · Intermediate · Core · student, pediatric, radiology
Clinical: The fusion of cementum or dentin of a tooth root directly to alveolar bone without an intervening periodontal ligament; affected primary teeth become 'submerged' (infraoccluded) as surrounding bone grows and may block permanent tooth eruption.
Plain English: When a tooth's root fuses directly to the jawbone — the tooth stops erupting and gets stuck below the level of the surrounding teeth, which can block the permanent tooth underneath.
Insurance · Basic · Nice-to-know · front-desk
Clinical: Maximum dollar amount a dental benefit plan will pay for covered services during a specified benefit period (usually one calendar year).
Plain English: The most your dental plan will pay for covered care in a year.
Insurance · Basic · Core · student, front-desk
Clinical: The maximum dollar amount a dental insurance plan will pay for covered services within one benefit year; once the annual maximum is reached, the patient is responsible for 100% of all remaining costs until the plan year resets.
Plain English: The most money your dental insurance will pay in a year — once you hit this limit, all remaining dental costs come out of your own pocket until the plan year starts over.
Orthodontics · Intermediate · Core · student, lab
Clinical: The influence of the contacting surfaces of the anterior teeth on tooth movements in the excursive positions of the mandible.
Plain English: The way your front teeth guide the movement of your jaw when it moves forward or side to side.
Anatomy · Basic · Core · student, lab, front-desk
Clinical: The six front teeth in each arch (incisors and canines) located in front of the premolars.
Plain English: Your front teeth — the incisors and canines visible when you smile.
Specialty · Intermediate · Core · student, front-desk
Clinical: The administration of a single prophylactic antibiotic dose before invasive dental procedures to prevent infective endocarditis or prosthetic joint infection in at-risk patients; current AHA guidelines (2007) significantly narrowed indications to only the highest-risk cardiac conditions.
Plain English: A single antibiotic dose taken before dental treatment to prevent bacteria from the mouth causing infection of a heart valve or joint replacement — only recommended for specific high-risk medical conditions.
Oral Medicine · Advanced · Core · student, front-desk
Clinical: Management of patients taking blood-thinning medications (warfarin, NOACs — dabigatran, rivaroxaban, apixaban, antiplatelet drugs — aspirin, clopidogrel) who require invasive dental procedures; current evidence does not support routine discontinuation of anticoagulants for most dental procedures.
Plain English: Managing patients on blood thinners who need dental surgery — current guidelines generally recommend continuing blood thinners for routine dental extractions, using local hemostatic measures instead.
Specialty · Advanced · Core · student, front-desk
Clinical: The management of patients taking anticoagulant or antiplatelet medications (warfarin, NOACs — rivaroxaban, apixaban, dabigatran; aspirin; clopidogrel) undergoing dental procedures; current evidence supports continuing anticoagulation for most routine dental procedures with local hemostatic measures rather than drug interruption.
Plain English: Managing dental treatment in patients taking blood thinners — the standard of care now is to keep most patients on their medication and use local clotting measures rather than stopping the drug and risking a stroke or clot.
Endodontics · Intermediate · Core · student
Clinical: An electronic device that measures the impedance between an endodontic file in the root canal and an electrode on the lip, used to determine working length by locating the apical foramen without relying solely on radiographs.
Plain English: A small electronic device that tells us when a root canal instrument has reached the very tip of the root — reducing the number of X-rays needed.
Endodontics · Advanced · Nice-to-know · student
Clinical: A procedure to create a calcific barrier at the apex of an immature necrotic tooth, allowing obturation; traditionally achieved with calcium hydroxide dressings over months, now more commonly using MTA as a single-visit apical plug.
Plain English: A treatment for a young tooth with a dead nerve that creates a hard seal at the root tip before filling the canal — now often done in one visit using a mineral material.
Pathology · Intermediate · Nice-to-know · student
Clinical: Recurrent, shallow, painful ulcer of nonkeratinized oral mucosa, often idiopathic and self-limiting.
Plain English: A common small, painful sore inside the mouth (canker sore).
Oral Medicine · Basic · Core · student, front-desk
Clinical: A common, recurrent, painful oral ulceration of unknown etiology affecting non-keratinized mucosa (buccal mucosa, floor of mouth, ventral tongue, soft palate); classified as minor (<10mm, heals in 10–14 days), major (>10mm), or herpetiform (multiple small ulcers).
Plain English: A common painful mouth sore — a shallow ulcer with a white or yellow center and red border on the soft inner tissues of the mouth; not contagious and usually heals on its own within two weeks.
Procedure · Advanced · Nice-to-know · student, front-desk
Clinical: Surgical resection of the apical portion of a tooth root with curettage of periapical tissues and retrograde sealing as indicated.
Plain English: A surgery at the tip of the tooth root to remove persistent infection after a root canal.
Insurance · Basic · Nice-to-know · front-desk
Clinical: A request from a member or authorized representative to have a plan review and change an adverse coverage or payment decision.
Plain English: When you ask your insurance company to take another look and change a decision not to pay for care.
Orthodontics · Intermediate · Core · student, lab
Clinical: The shape of the dental arch in the horizontal plane, typically described as tapered, ovoid, or square; arch form should be maintained or coordinated between upper and lower arches throughout orthodontic treatment to ensure stable results.
Plain English: The overall shape of the row of teeth when viewed from above — whether narrow and pointed, rounded, or wide and flat — which must be preserved during treatment for the best long-term result.
Orthodontics · Intermediate · Core · student
Clinical: The difference between the available arch length (space in the dental arch) and the required arch length (sum of tooth widths); a negative discrepancy indicates crowding requiring expansion or extraction, while a positive discrepancy indicates spacing.
Plain English: The difference between how much room is available in the arch and how much room the teeth need — a deficit means teeth are crowded, a surplus means there are gaps.
Orthodontics · Intermediate · Nice-to-know · student, lab
Clinical: A contoured metal wire that fits into bracket slots to apply controlled forces for tooth alignment and movement.
Plain English: The wire your orthodontist places through your braces to guide your teeth into position.
Procedure · Intermediate · Nice-to-know · student, front-desk
Clinical: Modification or replacement of orthodontic archwires or elastics to change tooth movement forces.
Plain English: Tightening or adjusting braces to keep the teeth moving into the right position.
Orthodontics · Intermediate · Core · student, lab
Clinical: The sequential use of archwires of increasing stiffness and cross-section throughout treatment — from initial light flexible wires for alignment through heavier rectangular wires for torque control — to progressively achieve tooth movement goals.
Plain English: The planned sequence of wires used in braces, starting with thin flexible wires to align teeth and progressing to thicker stiffer wires to finalize position and control tooth angulation.
Specialty · Intermediate · Core · student
Clinical: An amide local anesthetic unique in having both an amide and an ester linkage, allowing partial metabolism in the plasma; available as 4% with 1:100,000 or 1:200,000 epinephrine; superior bone diffusion makes it effective for maxillary infiltrations and buccal infiltration as an alternative to IAN block.
Plain English: A powerful numbing medicine that diffuses through bone especially well — often used as an alternative to an inferior alveolar nerve block for lower posterior teeth using infiltration instead.
Anatomy · Intermediate · Core · student
Clinical: A biconcave fibrocartilaginous disc interposed between the condyle and the glenoid fossa/articular eminence that divides the TMJ into upper and lower joint compartments; attached to the condylar poles and posterior bilaminar zone; distributes and absorbs joint loading forces.
Plain English: The shock-absorbing pad inside the jaw joint — it sits between the condyle and skull socket, providing cushioning and allowing smooth movement during chewing and opening.
Anatomy · Intermediate · Core · student
Clinical: The convex bony prominence of the temporal bone anterior to the glenoid fossa along which the condyle translates during maximum mouth opening; the steepness of the eminence (eminence inclination) affects TMJ disc loading and the envelope of mandibular movement.
Plain English: The bony slope in front of the jaw joint socket that the condyle slides down during wide opening — the steepness of this slope determines the pattern of jaw movement.
Lab Process · Basic · Core · student, lab, front-desk
Clinical: A thin, ink-bearing paper placed between the teeth to mark high contact points during occlusal adjustment of restorations or appliances.
Plain English: A thin colored paper placed between the teeth to show where they are touching too hard — used to adjust the bite of a new restoration.
Lab Process · Basic · Core · student, lab
Clinical: Thin colored paper (typically 40–200μm) used in both the laboratory and clinical settings to mark occlusal contacts; the paper transfers color to high spots when the patient taps or grinds; thinner paper (8μm shimstock/shim stock) is used to detect the lightest contacts.
Plain English: The colored paper used to mark where teeth are touching too hard — the pressure transfers color to the high spots; ultrathin versions detect even the lightest contacts.
Lab Process · Intermediate · Core · student, lab
Clinical: A mechanical instrument that simulates jaw movements, used to mount dental models and analyze or fabricate restorations in proper occlusal relationship.
Plain English: A hinged device that holds models of your teeth to mimic how your jaw moves, helping us build restorations that fit your bite.
Lab Process · Intermediate · Core · student, lab
Clinical: A mechanical device that simulates the movements of the mandible and holds upper and lower dental casts in their correct spatial relationship; used in lab fabrication and treatment planning to assess and adjust occlusal contacts.
Plain English: A hinged lab instrument that holds plaster models of the upper and lower teeth and mimics jaw movement — used to check and adjust how a crown or denture will fit the bite.
Radiology · Intermediate · Core · student, radiology
Clinical: Any structure, density, or pattern visible on a radiograph that does not represent actual anatomical structures or pathology; caused by patient movement, beam geometry, processing errors, patient positioning, or external objects; artifacts can mimic or obscure true findings.
Plain English: A false image or shadow on an X-ray that is not a real tooth or bone structure — caused by movement, metal objects, positioning errors, or sensor problems.
Insurance · Basic · Core · front-desk
Clinical: An authorization by the patient directing the insurance company to pay benefits directly to the dental provider rather than to the patient.
Plain English: Your permission for your insurance to pay your dentist directly instead of sending the check to you.
Lesion Descriptor · Basic · Nice-to-know · student
Clinical: Decrease in size or wasting of tissue, often presenting as thinning of epithelium or loss of papillae.
Plain English: Thinning or loss of normal tissue so an area looks smoother or more sunken than usual.
Anatomy · Basic · Core · student
Clinical: The keratinized portion of gingiva that is tightly bound to the underlying alveolar bone and cementum; located between the free gingival groove and the mucogingival junction.
Plain English: The firm, tough gum tissue that is tightly attached to the bone around your teeth — it acts as a protective seal.
Pathology · Basic · Core · student
Clinical: The physiological or pathological loss of tooth structure resulting from tooth-to-tooth contact during function or parafunction (bruxism); produces flat, polished wear facets on the incisal edges, cusp tips, or occlusal surfaces; accelerated by bruxism and acidic dietary environments.
Plain English: The wearing down of teeth from teeth grinding against each other — producing flat, shiny surfaces on the biting edges and chewing surfaces, especially in patients who grind their teeth.
Pediatric · Intermediate · Core · student, front-desk, pediatric
Clinical: Autism spectrum disorder (ASD) is a neurodevelopmental condition characterized by varied social communication challenges and restricted/repetitive behaviors; dental implications include hypersensitivity to sensory stimuli (touch, sound, taste, light), difficulty with unexpected changes in routine, and challenges with behavioral compliance during dental care.
Plain English: A neurodevelopmental condition that creates unique dental challenges — many patients with autism are hypersensitive to dental sounds, smells, and touch, making sensory preparation and consistent routines essential for successful care.
Specialty · Intermediate · Core · student, front-desk
Clinical: The most widely used method of sterilizing dental instruments; uses saturated steam under pressure (typically 121°C at 15 psi for 15–30 minutes or 132–134°C for 3–4 minutes in a pre-vacuum cycle) to achieve destruction of all microorganisms including bacterial endospores.
Plain English: The machine used to sterilize dental instruments using pressurized steam — kills all microorganisms including spores; the gold standard sterilization method in dentistry.
Oral Surgery · Advanced · Core · student
Clinical: Bone graft material harvested from the patient's own body (chin, ramus, tibia, iliac crest); the gold standard for bone grafting due to its osteogenic, osteoinductive, and osteoconductive properties, though it requires a second surgical site.
Plain English: A bone graft using bone taken from another part of your own body — it's the most effective type because it contains your own living bone cells, but it does require a second surgery site.
Insurance · Intermediate · Nice-to-know · front-desk
Clinical: Billing a patient for the difference between a provider's charge and the plan's allowed amount when the provider is not required to accept the allowed amount as payment in full.
Plain English: When a provider bills you for the leftover difference after your plan has paid what it will pay.
Orthodontics · Intermediate · Nice-to-know · student, lab
Clinical: A thin stainless steel ring cemented circumferentially around a posterior tooth to provide attachment points for orthodontic appliances.
Plain English: A metal ring that wraps completely around a back tooth to hold orthodontic appliances in place.
Prosthodontics · Advanced · Core · student, lab
Clinical: An implant-supported removable denture retained by a custom-milled or cast metal bar connecting two or more implants, with clips in the denture base that engage the bar for secure retention and rotational stability.
Plain English: A type of implant-supported denture held in place by a metal bar that connects the implants — the denture clips onto the bar for a very secure fit.
Specialty · Basic · Core · student, front-desk
Clinical: Infection control method using disposable plastic covers, bags, or wraps applied to frequently touched surfaces (chair controls, handpiece hoses, light handles, headrest) before patient treatment; the barrier is removed and discarded after each patient without the need for surface disinfection.
Plain English: Plastic covers placed on dental chair controls, light handles, and equipment before treatment — after the patient, the covers are removed and discarded, protecting against surface contamination.
Materials · Intermediate · Core · student
Clinical: A thicker layer of material (glass ionomer or resin-modified GIC) placed in a prepared cavity to replace missing dentin, provide thermal insulation, and support the overlying restoration; used in deep cavities where insufficient dentin remains to adequately protect the pulp.
Plain English: A thick insulating layer placed inside a deep cavity to replace missing dentin — it protects the nerve and provides a solid foundation for the filling material placed on top.
Pediatric · Basic · Nice-to-know · front-desk, pediatric
Clinical: Process by which dentists and staff direct or modify children's behavior to promote safe, effective, and positive dental experiences.
Plain English: Ways the dental team helps kids feel comfortable and cooperate during visits.
Oral Medicine · Basic · Core · student, front-desk
Clinical: Describing a lesion or growth that is not cancerous, does not invade surrounding tissue, and does not metastasize.
Plain English: A non-cancerous condition that is not likely to spread or become life-threatening.
Periodontics · Intermediate · Core · student
Clinical: The combined dimension of the junctional epithelium (~1mm) and the supracrestal connective tissue attachment (~1mm) that exists between the base of the gingival sulcus and the alveolar bone crest; violation of this space by a restoration margin causes chronic inflammation.
Plain English: The natural zone of soft tissue attachment between the gum and bone around each tooth — crown margins placed too deep into this space cause persistent gum inflammation.
Specialty · Intermediate · Core · student, front-desk
Clinical: A quality assurance test containing a known population of highly resistant bacterial spores (Geobacillus stearothermophilus for steam autoclaves) run through a sterilization cycle and cultured to verify that the cycle was effective; required by OSHA and state regulations at least weekly.
Plain English: A weekly test using bacterial spores placed in the sterilizer — if the spores die, the sterilizer is working correctly; if they survive, the sterilizer must be taken out of service immediately.
Procedure · Intermediate · Nice-to-know · student, front-desk
Clinical: Removal of tissue for microscopic examination to establish a diagnosis.
Plain English: Taking a small tissue sample to be examined in a lab to find out what it is.
Materials · Advanced · Nice-to-know · student
Clinical: Bisphenol A-glycidyl methacrylate; the primary resin monomer in most dental composite restorative materials, providing the polymer backbone after light curing.
Plain English: The main ingredient in tooth-colored filling material that hardens when exposed to a special curing light.
Radiology · Intermediate · Nice-to-know · student, radiology
Clinical: An intraoral radiographic technique in which the X-ray beam is directed perpendicular to an imaginary plane that bisects the angle formed by the long axis of the tooth and the film; used when a parallel sensor position cannot be achieved (e.g., shallow palate, tori).
Plain English: An alternative X-ray technique used when the standard approach isn't possible — the beam is aimed at the halfway angle between the tooth and the sensor to reduce distortion.
Oral Medicine · Advanced · Core · student, front-desk
Clinical: Antiresorptive medications (oral: alendronate/Fosamax, risedronate; IV: zoledronic acid/Zometa, pamidronate) that inhibit osteoclast activity; used for osteoporosis and bone metastases; accumulate in bone indefinitely and suppress bone turnover, impairing healing after invasive procedures and creating MRONJ risk.
Plain English: A class of medications that strengthen bones but can severely impair jaw bone healing — patients on these drugs (especially IV forms) are at risk for a serious jaw condition if they have teeth removed or implants placed.
Specialty · Advanced · Core · student, front-desk
Clinical: Bisphosphonates (alendronate, zoledronic acid, pamidronate) are antiresorptive drugs used for osteoporosis and cancer-related bone disease; they inhibit osteoclast function, altering bone remodeling; dental relevance: increased risk of medication-related osteonecrosis of the jaw (MRONJ), especially with IV bisphosphonates.
Plain English: Osteoporosis and cancer bone medications that affect jaw healing — patients taking these drugs, especially by IV, have a higher risk of exposed dead jawbone after tooth extractions.
Prosthodontics · Intermediate · Nice-to-know · student, lab
Clinical: A record of the occlusal relationship between maxillary and mandibular teeth, used to mount study models on an articulator.
Plain English: A soft material you bite into to capture how your upper and lower teeth come together.
Radiology · Basic · Nice-to-know · student
Clinical: Intraoral radiograph showing the crowns of the maxillary and mandibular teeth and the height of the alveolar bone crest in a specific arch segment.
Plain English: A small dental x-ray that shows the crowns of your upper and lower teeth and the bone level between them.
Periodontics · Basic · Core · student, front-desk
Clinical: The presence of bleeding within 30 seconds of gentle periodontal probing; an important clinical indicator of gingival or periodontal inflammation, as healthy tissue does not bleed on gentle probing.
Plain English: Bleeding from the gum when a dentist or hygienist gently probes around the tooth — it's a warning sign of inflammation that may indicate gum disease.
Specialty · Basic · Core · student, front-desk
Clinical: Pathogenic microorganisms present in human blood that can cause disease in humans who are exposed to infected blood; the three pathogens of primary occupational concern in dentistry are HIV, hepatitis B virus (HBV), and hepatitis C virus (HCV).
Plain English: Germs carried in blood that can infect dental staff through needle sticks or cuts — the most important ones in dentistry are HIV, hepatitis B, and hepatitis C.
Orthodontics · Intermediate · Core · student
Clinical: A tooth-size analysis comparing the mesiodistal widths of the maxillary and mandibular teeth to determine if a tooth-size discrepancy exists; an anterior ratio (canine-to-canine) and overall ratio (first molar-to-first molar) are calculated; discrepancies affect the ability to achieve ideal overjet and overbite.
Plain English: A measurement comparing the widths of all upper teeth to all lower teeth — if one arch's teeth are proportionally wider, perfect alignment is impossible without IPR or restorations to correct the size difference.
Orthodontics · Basic · Core · student, lab
Clinical: A passive, fixed wire retainer bonded to the lingual surfaces of anterior teeth to maintain post-treatment alignment.
Plain English: A thin wire glued to the back of your front teeth after braces to keep them from shifting.
Orthodontics · Basic · Core · student, lab
Clinical: The process of attaching orthodontic brackets directly to the tooth surface using a composite resin adhesive; requires acid etching and primer application for adequate bond strength; the bond is designed to be strong during treatment but removable without enamel damage at debonding.
Plain English: The process of gluing orthodontic brackets directly onto teeth using a special adhesive — the bond is strong enough to withstand treatment forces but designed to release cleanly when braces are removed.
Periodontics · Advanced · Core · student, radiology
Clinical: A loss of alveolar bone caused by periodontal disease, classified by the number of remaining bony walls (one-wall, two-wall, three-wall) and the pattern of bone loss (horizontal vs. vertical/angular); the classification determines regenerative potential.
Plain English: Bone loss around a tooth caused by gum disease — categorized by how many walls of bone remain, which determines whether the bone can be regrown.
Implant · Advanced · Core · student
Clinical: A clinical classification (Lekholm & Zarb) describing the quality of bone at an implant site based on the proportion of cortical to trabecular bone: D1 (dense cortical), D2 (thick cortical with coarse trabecular), D3 (thin cortical with fine trabecular), D4 (fine trabecular only).
Plain English: A rating system for bone quality at an implant site — from very hard and dense (D1) to soft and spongy (D4) — which affects how long we wait before loading the implant and how we design the restoration.
Oral Surgery · Intermediate · Core · student, lab
Clinical: Placement of autogenous bone, allograft, xenograft, or alloplastic material to augment or regenerate lost alveolar bone. Applications include periodontal regeneration around teeth, socket preservation after extraction, ridge augmentation, and implant site development.
Plain English: A procedure that places bone material into the jaw to rebuild areas where bone has been lost, often to prepare the site for a dental implant or to treat bone loss from gum disease.
Orthodontics · Intermediate · Nice-to-know · student, lab
Clinical: A small attachment bonded to the facial surface of a tooth through which an archwire passes to transmit force for tooth movement.
Plain English: The small metal or ceramic square glued to each tooth that holds the wire for your braces.
Prosthodontics · Basic · Core · student, lab
Clinical: A fixed prosthesis that replaces one or more missing teeth by crowning adjacent natural teeth (abutments) or implants and suspending an artificial tooth (pontic) between them. Cannot be removed by the patient.
Plain English: A permanent tooth replacement anchored to the neighboring teeth on either side, filling the gap left by a missing tooth.
Prosthodontics · Basic · Core · student, lab
Clinical: Involuntary, repetitive clenching or grinding of the teeth, often during sleep, causing wear, fracture, and TMJ dysfunction.
Plain English: Grinding or clenching your teeth, often at night, that can wear them down or cause jaw pain.
Anatomy · Advanced · Nice-to-know · student
Clinical: An encapsulated fatty tissue body situated in the buccal space between the buccinator muscle and the masseter and zygomaticus muscles; provides gliding for masticatory muscles during jaw movement and is used as a local pedicled flap for closure of palatal defects and oroantral communications.
Plain English: A natural pad of fat in the cheek that helps muscles slide smoothly during chewing — it can also be used as a surgical flap to close holes between the mouth and the sinus.
Anatomy · Basic · Core · student, lab, front-desk
Clinical: The surface of a posterior tooth facing the cheek.
Plain English: The cheek-facing side of your back teeth.
Materials · Intermediate · Core · student
Clinical: A category of resin composite designed for placement in increments up to 4–5mm depth without compromising polymerization; reduces technique sensitivity and placement time compared to conventional 2mm incremental layering.
Plain English: A newer type of tooth-colored filling material that can be placed in thicker layers and still cure properly — making fillings faster and easier to place.
Lesion Descriptor · Basic · Nice-to-know · student
Clinical: Large fluid-filled blister greater than 1 cm in diameter, may contain serous or hemorrhagic fluid.
Plain English: A larger blister in the mouth filled with fluid or blood.
Oral Medicine · Intermediate · Nice-to-know · student
Clinical: A chronic pain condition characterized by burning sensation of the oral mucosa — typically the tongue, lips, or palate — without a clinically identifiable cause.
Plain English: A burning or scalding sensation in the mouth, most often on the tongue, with no obvious visible cause.
Oral Medicine · Advanced · Nice-to-know · student
Clinical: A chronic, spontaneous burning or scalding sensation affecting the oral mucosa (most commonly the tongue) without clinically identifiable mucosal lesions or laboratory abnormalities; predominantly affects postmenopausal women; classified as primary (idiopathic) or secondary (associated with identifiable cause).
Plain English: A chronic burning or scalding feeling in the mouth — usually the tongue — with no visible sore or wound; it mainly affects women after menopause and is often difficult to diagnose.
Lab Process · Intermediate · Core · lab
Clinical: The heat-treatment step in which a wax pattern is melted and vaporized from the investment mold, leaving a cavity for the casting metal or pressable ceramic.
Plain English: The step where wax is melted out of the mold in a furnace, creating a space to fill with metal or ceramic.
Digital Dentistry · Basic · Core · student, lab
Clinical: Computer-aided design platforms (e.g., exocad, 3Shape Dental Designer) used in dental labs to digitally design crowns, bridges, implant components, and orthodontic appliances before milling or printing.
Plain English: Computer programs our lab uses to design your restoration digitally before milling or printing it.
Digital Dentistry · Intermediate · Nice-to-know · student, lab
Clinical: Computer-aided design and computer-aided manufacturing; digital workflow for designing and milling/printing dental restorations from intraoral scan data.
Plain English: A computer-based system that designs and machines your dental crown or other restoration digitally.
Digital Dentistry · Basic · Core · student, lab
Clinical: A pre-fabricated block of dental material (zirconia, lithium disilicate, PMMA, composite resin) in standardized dimensions designed for milling in a dental CAD/CAM unit; available in a wide range of shades and translucencies.
Plain English: A pre-made block of dental material that a computer-guided milling machine cuts and shapes into a crown, veneer, or other restoration.
Materials · Intermediate · Core · student
Clinical: A highly alkaline (pH ~12.5) material used in dentistry as a pulp capping agent, intracanal medicament, apexification material, and root perforation treatment; its alkalinity kills bacteria and stimulates hard tissue formation.
Plain English: A strong alkaline paste used inside teeth to kill bacteria and encourage healing — placed inside a root canal between visits or over a nearly exposed nerve.
Preventive · Intermediate · Core · student, front-desk
Clinical: A systematic caries management protocol classifying patients into low, moderate, high, or extreme risk categories based on disease indicators (visible caries, white spots, high plaque scores) and risk factors (dietary habits, fluoride exposure, saliva flow, MS/LB counts); recall interval and preventive interventions are customized to the patient's risk level.
Plain English: A structured approach to cavity prevention that tailors treatment to each patient's cavity risk level — low-risk patients get standard care while high-risk patients receive intensive fluoride treatment and shorter recall intervals.
Anatomy · Basic · Core · student, lab
Clinical: The pointed tooth located at the corner of each quadrant (tooth #6, #11, #22, #27), designed for tearing food and providing anterior guidance.
Plain English: Your pointed 'corner' teeth, sometimes called eye teeth or cuspids.
Orthodontics · Intermediate · Core · student, lab
Clinical: An occlusal scheme in which the canine teeth on the working side guide all lateral jaw movements, causing immediate posterior disclusion; considered the ideal occlusal scheme for protecting posterior teeth from destructive lateral forces.
Plain English: When the upper and lower canine (eye) teeth guide the jaw during side movements — the canines bear the load so the back teeth separate and avoid damage.
Prosthodontics · Intermediate · Core · student, lab
Clinical: A fixed partial denture in which the pontic is supported by a retainer on only one side, with no preparation on the opposite side.
Plain English: A bridge where the replacement tooth is supported from only one neighboring tooth instead of two.
Pathology · Basic · Core · student
Clinical: Demineralization and destruction of tooth hard tissues caused by bacterial activity in dental plaque.
Plain English: Tooth decay that creates a cavity in the tooth.
Preventive · Intermediate · Core · student
Clinical: Clinical and technological methods used to detect dental caries, ranging from visual-tactile examination (ICDAS scoring) and bitewing radiographs to advanced devices such as DIAGNOdent laser fluorescence, quantitative light-induced fluorescence (QLF), and near-infrared transillumination (NIRT).
Plain English: The various ways dentists find cavities — from looking and probing to X-rays to laser devices that detect the earliest, invisible stages of decay.
Procedure · Intermediate · Nice-to-know · student
Clinical: A propylene glycol-based dye (typically basic fuchsin or acid red) applied to a caries lesion to differentially stain infected (soft, bacteria-laden) dentin red, allowing selective removal of only the infected dentin while preserving sound remineralizable affected dentin.
Plain English: A colored liquid applied inside a cavity that stains only the infected part of the soft decay — helping the dentist know exactly how much to remove and what to leave.
Preventive · Intermediate · Core · student, front-desk
Clinical: A systematic evaluation of a patient's risk factors for developing dental caries, using tools such as CAMBRA (Caries Management by Risk Assessment) to classify patients as low, moderate, high, or extreme risk; guides recall intervals, fluoride recommendations, and preventive interventions.
Plain English: A structured review of factors that increase or decrease a patient's chance of getting cavities — used to customize their preventive care plan and how often they should be seen.
Preventive · Intermediate · Core · student, front-desk
Clinical: A structured clinical tool used to categorize each patient as low, moderate, or high caries risk based on biological risk factors (bacteria, diet, saliva), protective factors (fluoride, sealants, hygiene), and clinical indicators (active lesions, white spots); guides individualized preventive care and recall scheduling.
Plain English: A checklist-based evaluation that places each patient into a low, moderate, or high cavity risk category — it drives how often they need to be seen and what preventive treatments they should receive.
Orthodontics · Advanced · Nice-to-know · student, lab
Clinical: A fixed Class II corrector bonded to the upper canine and molar that acts as an inclined plane, using the mandibular arch (via elastics) to correct the Class II molar relationship before full-arch brackets are placed; reduces overall treatment time by correcting the Class II in the early phase.
Plain English: A fixed appliance bonded to the upper canine and molar that uses rubber bands to the lower arch to correct a Class II bite before traditional braces are placed — it can significantly shorten total treatment time.
Specialty · Intermediate · Core · front-desk
Clinical: The rate at which patients agree to and proceed with recommended dental treatment; a key performance metric in dental practice; influenced by patient education, trust, financial arrangements, communication skills, and patient-centered care.
Plain English: The percentage of patients who say yes to recommended dental treatment — a key business metric that improves with better patient communication and flexible payment options.
Lab Process · Intermediate · Core · student, lab
Clinical: The process of forming a metal dental restoration by melting alloy and forcing it into a prepared mold (investment) by centrifugal or pressure casting; produces a metal restoration that closely replicates the wax pattern in its dimensions.
Plain English: The process of melting dental metal alloy and spinning or pushing it into a mold — it produces the metal framework or crown in the exact shape of the wax model.
Procedure · Intermediate · Core · student
Clinical: The shape given to a tooth preparation to retain and support a restorative material; classical G.V. Black cavity classification (Class I–VI) defines the location of the cavity; modern minimal intervention principles prefer conservative outlines that follow the extent of disease rather than extension for prevention.
Plain English: The shape of the drilled-out area in a tooth — modern dentistry aims to remove only diseased structure, unlike the older approach of removing healthy tooth to make the filling more retentive.
Radiology · Intermediate · Nice-to-know · student
Clinical: Cone Beam Computed Tomography; a 3D radiographic technique producing high-resolution images of teeth, bone, and airway for surgical and prosthetic planning.
Plain English: A 3D X-ray of your jaw that shows bone, teeth, and nerves in detail to plan implants or surgery.
Insurance · Basic · Core · student, front-desk
Clinical: Current Dental Terminology code — a standardized 5-character alphanumeric code (e.g., D2750 for a porcelain-fused-to-metal crown) published by the ADA and used universally for reporting dental procedures to insurance carriers and for billing purposes.
Plain English: The standardized code assigned to every dental procedure used when submitting claims to insurance — like a price list code that tells the insurance company exactly what was done.
Lab Process · Intermediate · Core · student, lab
Clinical: The precise gap built into an indirect restoration during CAD/CAM design or die spacer application to accommodate the thickness of the luting cement and ensure full seating of the crown or bridge without rocking.
Plain English: The tiny pre-planned gap inside a crown that makes room for the cement — without it, the crown won't seat fully on the tooth.
Implant · Intermediate · Core · student, lab
Clinical: An implant-supported crown cemented onto a prefabricated or custom abutment; provides superior esthetics when implant angulation would place a screw access hole in an unfavorable location, but carries the risk of residual cement causing peri-implantitis.
Plain English: An implant crown cemented onto an abutment rather than screwed — it looks more natural when the implant angle makes a screw hole awkward, but cement left behind is a major cause of implant gum disease.
Pathology · Advanced · Core · student, radiology
Clinical: A group of non-neoplastic reactive fibro-osseous lesions of the jaw that replace normal bone with fibrous tissue and abnormal cementum-like material; most common in middle-aged Black women in the anterior mandible; often an incidental radiographic finding.
Plain English: A harmless change in the jawbone where normal bone is slowly replaced by a fibrous and cementum-like material — it usually causes no symptoms and is found on routine X-rays.
Anatomy · Basic · Core · student, radiology
Clinical: The anatomical landmark where the enamel of the crown meets the cementum of the root; used as a reference point for periodontal probing and radiographic bone level assessment.
Plain English: The line where the hard outer covering of your tooth meets the root surface — an important landmark dentists measure from to check gum health.
Anatomy · Basic · Nice-to-know · student
Clinical: Hard connective tissue covering the root surface, anchoring periodontal ligament fibers to the root via Sharpey's fibers.
Plain English: A thin hard layer covering your tooth root that helps keep your tooth attached to your jawbone.
Orthodontics · Advanced · Nice-to-know · student
Clinical: The point on or near a tooth (approximately at the junction of the coronal and middle third of the root in single-rooted teeth) at which a single force produces pure translation without rotation; analogous to the center of mass in a free body.
Plain English: The balance point of a tooth in the bone — when force is applied through this point, the tooth moves in a straight line without tipping.
Pathology · Advanced · Nice-to-know · student
Clinical: A non-neoplastic intraosseous lesion of the jaws characterized by proliferating fibroblasts and multinucleated giant cells on a vascular stroma; classified as aggressive or non-aggressive based on clinical and radiographic behavior.
Plain English: A type of jaw lesion made up of large cells that can destroy bone — it's not a cancer but can be aggressive and usually requires surgery.
Orthodontics · Intermediate · Core · student, lab
Clinical: The maximum intercuspation of the teeth regardless of condylar position; the position of habitual bite.
Plain English: The way your teeth fit together when you bite down normally.
Orthodontics · Basic · Core · student, lab
Clinical: The tooth-guided position of maximum intercuspation — the position of the mandible when the greatest number of teeth occlude simultaneously; also called Maximum Intercuspation (MIP); the patient's habitual bite position.
Plain English: The position where the teeth come together in the maximum bite — also called the habitual bite; the position used in most everyday function.
Orthodontics · Advanced · Core · student, lab
Clinical: A maxillomandibular relationship in which the condyles are in their most superior and anterior position in the glenoid fossa, regardless of tooth contact.
Plain English: The jaw position where the jaw joint is seated most comfortably, used as a starting point for bite analysis.
Orthodontics · Advanced · Nice-to-know · student, lab
Clinical: The most superoanterior position of the condyle in the glenoid fossa when the disc is properly interposed, independent of tooth contact; considered the most repeatable and physiologically stable mandibular reference position for occlusal analysis and full-arch restorations.
Plain English: The most stable position of the jaw joint — not determined by the teeth but by the joint itself — used as a reference when designing full-mouth restorations or analyzing bite problems.
Orthodontics · Intermediate · Core · student
Clinical: The systematic measurement and evaluation of skeletal, dental, and soft-tissue landmarks on a lateral cephalometric radiograph to diagnose malocclusion, plan treatment, and track growth changes.
Plain English: An X-ray analysis of the bones and teeth in your skull that helps us plan exactly how to move your teeth and jaw for the best result.
Radiology · Basic · Core · student, radiology
Clinical: A standardized lateral or frontal skull radiograph taken at a fixed source-to-patient distance using a cephalostat to ensure reproducibility; used for orthodontic diagnosis, treatment planning, and progress evaluation.
Plain English: A full side-view X-ray of your head taken with a special machine that keeps the position exactly the same each time so progress can be compared accurately.
Lab Process · Advanced · Core · student, lab
Clinical: A dental laboratory fabrication technique in which a ceramic ingot is pressed under heat (~920°C) and pressure into a phosphate-bonded investment mold formed from a wax pattern; used for lithium disilicate (IPS e.max Press) and leucite-reinforced ceramics; produces a dense, homogeneous ceramic core.
Plain English: A lab technique where a ceramic ingot is melted and pressed into a mold shaped from a wax pattern — it creates a very dense, strong ceramic restoration with consistent properties throughout.
Radiology · Intermediate · Core · student, radiology
Clinical: A radiographic artifact that produces a false radiolucent area at the cervical (neck) region of a tooth where it enters the alveolar bone, caused by decreased bone density and X-ray geometry at that point; can be mistaken for cervical caries.
Plain English: A false shadow on an X-ray that looks like a cavity at the gum line of a tooth — it's an imaging trick caused by changes in tissue density, not real decay.
Anatomy · Basic · Core · student, lab
Clinical: The narrowed neck region of a tooth at the junction of the crown and root, corresponding to the cementoenamel junction (CEJ).
Plain English: The narrow 'neck' area where your tooth meets your gum line.
Orthodontics · Advanced · Core · student
Clinical: A method of assessing skeletal maturity and remaining growth potential by evaluating the shape of the second, third, and fourth cervical vertebrae on a lateral cephalogram, avoiding the need for a separate hand-wrist radiograph.
Plain English: A way to check how much growing a patient still has left by looking at the shape of the neck bones on an existing X-ray — it helps time when to use growth-related appliances.
Lab Process · Advanced · Nice-to-know · lab
Clinical: The application of surface stains and tints to a ceramic or composite restoration to replicate the individual color nuances, staining, and texture of natural teeth.
Plain English: Adding fine color details and surface texture to a dental restoration to make it look like a real tooth.
Lab Process · Intermediate · Core · lab
Clinical: The technique of applying ceramic stains and glazes to a restoration's surface to mimic the natural color variations, translucency, and texture of natural tooth structure; performed before or during the final glaze firing.
Plain English: The artistic process of adding color details — stains and glazes — to a ceramic restoration to replicate the natural variations in a real tooth's appearance.
Oral Medicine · Intermediate · Core · student, front-desk
Clinical: Adverse oral effects of chemotherapeutic agents including oral mucositis (painful ulceration of the oral mucosa — the most common and debilitating), immunosuppression-related infections (candidiasis, herpes reactivation), xerostomia, and increased bleeding risk due to thrombocytopenia.
Plain English: Side effects from cancer chemotherapy that affect the mouth — including painful mouth sores (mucositis), increased infections, dry mouth, and bleeding gums.
Orthodontics · Intermediate · Nice-to-know · student
Clinical: An extraoral orthopedic appliance consisting of a chin cup attached to a headgear strap that applies upward and backward force to the chin (and thus the mandible) to restrain mandibular growth in Class III growing patients.
Plain English: An extraoral appliance that presses on the chin to push the lower jaw back and slow its forward growth — used in young Class III patients where the lower jaw is growing too much.
Preventive · Basic · Core · student, front-desk
Clinical: A broad-spectrum antimicrobial agent used in dentistry as a 0.12% oral rinse, gel, or chip; highly effective against gram-positive and gram-negative bacteria, fungi, and some viruses; the gold standard adjunct for plaque control and periodontal infection management.
Plain English: A prescription-strength antibacterial rinse that significantly reduces the bacteria in the mouth — used after gum surgery, with periodontal disease, or in patients who can't brush effectively.
Preventive · Intermediate · Core · student, front-desk
Clinical: A broad-spectrum cationic bis-biguanide antiseptic with substantivity (prolonged adherence to oral tissues) effective against gram-positive and gram-negative bacteria, fungi, and some viruses; used as 0.12% oral rinse for periodontal treatment, post-surgical care, and implant maintenance; also available as 2% gel.
Plain English: A prescription antibacterial mouth rinse used after gum surgery or around implants — it clings to oral tissues and keeps killing bacteria for hours after rinsing.
Materials · Intermediate · Nice-to-know · student, lab
Clinical: A metal alloy of chromium and cobalt used in dental partial denture frameworks and some implant-supported prosthetics; valued for high strength, corrosion resistance, and relatively low cost.
Plain English: A strong metal alloy used to make the metal frame of partial dentures.
Pathology · Intermediate · Core · student
Clinical: Long-standing inflammatory lesion at the apex of a tooth, often radiographically visible as a periapical radiolucency, usually associated with a nonvital pulp.
Plain English: A long-term infection around the tip of a tooth root that may not always hurt but shows on an x-ray.
Pathology · Intermediate · Core · student
Clinical: Inflammatory disease of the supporting tissues of the teeth resulting in progressive attachment loss and bone destruction, usually slowly progressive.
Plain English: Advanced gum disease that damages the bone and support around the teeth over time.
Orthodontics · Basic · Core · student
Clinical: An Angle classification in which the mesiobuccal cusp of the maxillary first molar occludes in the buccal groove of the mandibular first molar (normal molar relationship), but other dental or skeletal problems exist such as crowding, spacing, or rotations.
Plain English: A bite where the back teeth line up correctly but there may still be crowding, spacing, or other tooth position issues.
Orthodontics · Basic · Core · student, front-desk
Clinical: An Angle classification in which the mesiobuccal cusp of the maxillary first molar occludes anterior to the buccal groove of the mandibular first molar; the lower jaw appears retruded relative to the upper.
Plain English: An overbite or 'buck teeth' bite where the upper jaw or teeth are too far forward compared to the lower jaw.
Orthodontics · Basic · Core · student, front-desk
Clinical: An Angle classification in which the mesiobuccal cusp of the maxillary first molar occludes posterior to the buccal groove of the mandibular first molar; the lower jaw appears protruded relative to the upper.
Plain English: An underbite where the lower jaw or teeth are too far forward compared to the upper jaw.
Orthodontics · Intermediate · Nice-to-know · student, lab
Clinical: A series of sequential, transparent thermoplastic trays that incrementally reposition teeth through controlled forces.
Plain English: Clear, removable plastic trays that gradually straighten your teeth without metal braces.
Specialty · Intermediate · Core · student
Clinical: A lincosamide antibiotic active against gram-positive organisms and anaerobes; second-line dental antibiotic for penicillin-allergic patients; penetrates bone well; used for dental infections and for antibiotic prophylaxis in patients allergic to penicillin.
Plain English: The backup antibiotic for patients allergic to penicillin — it works well against the bacteria that cause dental infections and reaches deep into bone tissue.
Periodontics · Intermediate · Core · student
Clinical: The distance from the cementoenamel junction (CEJ) to the base of the periodontal pocket; accounts for both probing depth and gingival recession to give a true measure of tissue destruction.
Plain English: A measurement from a fixed point on the tooth (the CEJ) to the bottom of the gum pocket — it tells us how much gum and bone support has been lost.
Insurance · Intermediate · Nice-to-know · front-desk
Clinical: A federal law allowing employees and their dependents to continue group dental (and health) insurance coverage for a limited period (typically 18 months) after leaving employment, at their own expense plus an administrative fee.
Plain English: A federal law that lets you keep your work dental insurance for up to 18 months after leaving your job — you pay the full premium yourself, so it can be expensive.
Orthodontics · Intermediate · Nice-to-know · student, lab
Clinical: A helical spring placed on the archwire between brackets to either open space (open coil) or maintain/close space (closed coil) through a continuous light force.
Plain English: A small spring on your braces wire that gently pushes teeth apart or holds space while your teeth move.
Procedure · Basic · Core · student, front-desk
Clinical: Prosthesis replacing all teeth in a maxillary or mandibular arch, supported by soft tissues and underlying bone.
Plain English: A full set of removable false teeth for the upper or lower jaw.
Materials · Basic · Nice-to-know · student, lab
Clinical: Tooth-colored direct restorative material composed of a dimethacrylate resin matrix reinforced with inorganic filler particles (silica, barium glass).
Plain English: A tooth-colored filling material that blends with the tooth's natural color.
Oral Surgery · Advanced · Core · student
Clinical: A fracture of the mandibular condyle — one of the most common facial fractures; classified by location (condylar head, condylar neck, subcondylar) and displacement; management may be conservative (closed reduction with physiotherapy) or surgical (open reduction with internal fixation) depending on classification.
Plain English: A broken jaw condyle — often caused by a fall or blow to the chin — which may be treated conservatively with physiotherapy or surgically with plates and screws depending on the severity.
Radiology · Advanced · Core · student, radiology
Clinical: The volume of anatomy captured in a single CBCT scan, selectable from small (3–5cm, for a single implant site), medium (up to 10cm, for full arch), or large (>10cm, for craniofacial evaluation); selection follows ALARA — the smallest FOV that answers the clinical question should be used.
Plain English: The size of the 3D image captured by a CBCT scanner — chosen based on what needs to be seen; a smaller field means less radiation and is preferred when only one area needs evaluation.
Periodontics · Advanced · Core · student
Clinical: A mucogingival surgical procedure in which subepithelial connective tissue harvested from the palate is placed beneath a coronally or laterally repositioned flap to cover exposed root surfaces or augment gingival thickness.
Plain English: A gum graft where tissue taken from the roof of the mouth is used to cover an exposed tooth root or thicken the gum tissue.
Prosthodontics · Advanced · Core · lab
Clinical: The portion of a fixed partial denture that joins the retainer(s) to the pontic; may be rigid (soldered or cast) or non-rigid (key-keyway design).
Plain English: The joining section between a dental crown and the false tooth on a bridge.
Insurance · Intermediate · Nice-to-know · front-desk
Clinical: Rules used to determine the order in which multiple plans pay when a member has more than one source of coverage, to avoid paying more than 100% of the allowed amount.
Plain English: How two or more plans decide who pays first and how much each will pay so the total does not go over the bill.
Insurance · Basic · Nice-to-know · front-desk
Clinical: Fixed dollar amount or percentage of the total charge that a covered patient pays for a specific dental service after the deductible is met.
Plain English: The set amount or percentage you pay when you get a dental service.
Procedure · Intermediate · Core · student, lab, front-desk
Clinical: A restorative foundation placed on a compromised tooth to replace missing coronal tooth structure and create adequate retention and resistance form for a crown.
Plain English: A base filling placed inside a damaged tooth to give a crown something solid to hold on to.
Anatomy · Basic · Core · student
Clinical: The dense, compact outer layer of bone that forms the plates of the alveolar bone (buccal and lingual cortical plates) and the jaw; provides structural rigidity and is remodeled slowly; thickness and density vary significantly across the jaws.
Plain English: The hard outer shell of the jawbone — it provides most of the bone's strength and is what the dentist drills through during implant surgery.
Specialty · Intermediate · Core · student
Clinical: Systemic or topical corticosteroids used in dentistry to manage inflammatory conditions such as aphthous ulcers, mucous membrane pemphigoid, lichen planus, and temporomandibular joint inflammation; also used as a pre-medication to reduce post-surgical edema after extractions and implant surgery.
Plain English: Anti-inflammatory steroid medicines used in dentistry to treat painful mouth sores, reduce swelling after oral surgery, or calm inflamed jaw joints.
Endodontics · Intermediate · Core · student
Clinical: A condition caused by an incomplete fracture of a vital posterior tooth, presenting with sharp pain upon biting that releases immediately; diagnosis is difficult as cracks may not be visible on radiographs; progression may lead to pulpitis, necrosis, or complete tooth fracture.
Plain English: When a tooth has a hidden crack that causes sharp pain when biting — the pain disappears immediately when pressure is released, making it tricky to diagnose since the crack often doesn't show on X-rays.
Orthodontics · Basic · Core · student, front-desk
Clinical: A malocclusion in which one or more teeth are in abnormal buccal or lingual position relative to the opposing teeth. May be anterior or posterior.
Plain English: When upper and lower teeth don't line up correctly side-to-side — upper teeth bite inside the lower teeth.
Orthodontics · Intermediate · Core · student, front-desk, pediatric
Clinical: A malocclusion in which one or more maxillary anterior teeth occlude lingual (behind) to the mandibular anterior teeth; may be dental (individual tooth tipping) or skeletal (mandibular prognathism or maxillary deficiency); requires early correction to prevent functional shift and enamel wear.
Plain English: When one or more upper front teeth bite behind the lower front teeth instead of in front of them — it needs early treatment to prevent jaw shifting and tooth damage.
Orthodontics · Basic · Core · student, front-desk, pediatric
Clinical: A transverse malocclusion in which the upper posterior teeth occlude inside (lingual to) the lower posterior teeth on one or both sides; if unilateral and functional in origin, it is often associated with a mandibular shift toward the crossbite side on closure.
Plain English: When one or more of the upper back teeth bite inside the lower back teeth instead of outside them — can be on one side or both, and may cause the jaw to shift to one side.
Orthodontics · Basic · Core · student, front-desk
Clinical: A malocclusion in which there is insufficient arch length to accommodate all teeth in normal alignment, resulting in overlapping, rotation, or displacement of teeth; classified as mild (<4mm), moderate (4–8mm), or severe (>8mm) discrepancy.
Plain English: When there isn't enough space in the jaw for all the teeth to fit in a straight line — causing teeth to overlap, rotate, or be pushed out of position.
Prosthodontics · Basic · Core · student, lab
Clinical: An indirect restoration that encircles the entire clinical crown of a tooth to restore form, function, and esthetics. Fabricated outside the mouth from ceramic, metal, or resin and cemented or adhesively bonded to the prepared tooth.
Plain English: A custom cap made in a lab that completely covers and protects a damaged or weakened tooth.
Periodontics · Basic · Core · student
Clinical: Surgical procedure removing gingival tissue and/or alveolar bone to expose more tooth structure for restoration or esthetics.
Plain English: A gum and bone procedure that exposes more of your tooth so a crown can be placed properly.
Periodontics · Intermediate · Core · student
Clinical: A surgical procedure that removes gingival tissue and/or alveolar bone to expose more tooth structure; performed either for esthetic purposes (treating a 'gummy smile') or to provide adequate tooth structure for a crown margin placed below the original gum line.
Plain English: A procedure that lowers the gum line to expose more of a tooth — done either for cosmetic reasons or to give the dentist enough tooth structure to place a crown.
Lesion Descriptor · Basic · Nice-to-know · student
Clinical: Dried collection of serum, blood, or exudate on the surface of the skin or vermilion border; less common intraorally.
Plain English: A dry, scab-like coating of blood or fluid on the surface of a sore, usually on the lips.
Lab Process · Intermediate · Core · student, lab
Clinical: The heat treatment step for lithium disilicate (e.max) pressed or milled restorations in which the amorphous glass-ceramic is converted to a crystalline phase (lithium disilicate crystals) at approximately 840–850°C, achieving final strength and color.
Plain English: The oven cycle that turns a rough e.max blank into a strong, fully crystallized ceramic — it's what gives lithium disilicate its final strength, shade, and translucency.
Orthodontics · Intermediate · Core · student, lab
Clinical: The anteroposterior curve of the occlusal plane, connecting the cusp tips of the mandibular posterior teeth from canine to last molar.
Plain English: The natural front-to-back curve of the lower biting surfaces — like a gentle arc when viewed from the side.
Orthodontics · Intermediate · Core · student
Clinical: The anteroposterior curvature of the occlusal plane as viewed from the side, connecting the cusp tips of the mandibular posterior teeth from canine to the last molar; an increased curve of Spee is associated with deep bite and must be leveled (flattened) during orthodontic treatment, which requires arch length.
Plain English: The natural front-to-back curve of the lower teeth's chewing surfaces — an exaggerated curve is associated with deep bites and must be leveled during braces, which uses up arch space.
Orthodontics · Advanced · Nice-to-know · lab
Clinical: The mediolateral curvature of the posterior occlusal plane when viewed from the front, with mandibular posterior teeth tilted slightly lingually.
Plain English: The side-to-side curve of the biting surfaces in the back of the mouth when viewed from the front.
Implant · Intermediate · Core · student, lab
Clinical: An implant abutment individually designed and fabricated (by CAD/CAM milling or casting) to match the specific implant angle, tissue contour, and restoration requirements of an individual patient, as opposed to a prefabricated stock abutment.
Plain English: A custom-made connector piece between your implant and crown, designed specifically for your mouth to give the best possible fit, appearance, and gum contour.
Lab Process · Intermediate · Core · student, lab
Clinical: A tray fabricated specifically for an individual patient's arch from acrylic or thermoplastic material, used to take final impressions with more uniform and controlled material thickness than stock trays, improving accuracy.
Plain English: A tray custom-made for your mouth to take a more accurate impression than a standard one-size-fits-all tray.
Procedure · Intermediate · Nice-to-know · student, front-desk
Clinical: Removal of fixed orthodontic appliances and residual adhesive at the completion of active treatment.
Plain English: Taking braces off and cleaning the tooth surfaces when treatment is finished.
Orthodontics · Basic · Core · student
Clinical: The process of removing fixed orthodontic appliances (brackets and bands) at the completion of treatment using debonding pliers or an ultrasonic device, followed by removal of residual adhesive from the tooth surfaces and polishing.
Plain English: The process of removing braces at the end of treatment — brackets are popped off with special pliers, adhesive residue is polished away, and impressions for retainers are taken.
Insurance · Basic · Nice-to-know · front-desk
Clinical: Portion of covered dental expenses that the patient must pay during a specified benefit period before the dental plan begins paying benefits.
Plain English: The amount you pay out of pocket each year before your dental plan starts paying.
Insurance · Basic · Core · front-desk
Clinical: The fixed amount a dental insurance subscriber must pay out-of-pocket before the insurance plan begins paying for covered services; typically ranges from $50–$200 per person per year, with some plans having a family deductible cap.
Plain English: The amount you pay yourself before your dental insurance starts covering costs — usually $50 to $200 a year, applied to most services except preventive care.
Orthodontics · Intermediate · Nice-to-know · student, lab
Clinical: A malocclusion characterized by excessive vertical overlap of the maxillary anterior teeth over the mandibular anterior teeth beyond the normal 2–3 mm.
Plain English: When your upper front teeth overlap your lower front teeth too much.
Lab Process · Intermediate · Nice-to-know · lab
Clinical: The process of removing a cured denture or acrylic appliance from its flask after the heat-curing cycle is complete.
Plain English: The step in making a denture where the finished appliance is carefully removed from the mold after it has hardened.
Specialty · Intermediate · Core · student, front-desk
Clinical: Patients with dementia present challenges in dental care due to impaired memory, communication, and cooperation; as dementia progresses, patients may require caregiver-assisted home care, modified treatment approaches, and ultimately may be unable to provide informed consent; early preventive intervention is essential.
Plain English: Dental care for patients with dementia — the key is early intervention while the patient can cooperate, and training caregivers for home oral hygiene as the disease progresses.
Preventive · Basic · Core · student, pediatric
Clinical: The loss of mineral ions (calcium and phosphate) from tooth structure due to acid produced by cariogenic bacteria metabolizing fermentable carbohydrates; the initial process in cavity formation.
Plain English: The process where acids from bacteria eat away the minerals in your tooth enamel, making it weak and starting the first stage of a cavity.
Pathology · Basic · Core · student, front-desk
Clinical: A localized collection of purulent exudate (pus) resulting from a bacterial infection; classified as periapical (pulpal origin, at the root apex), periodontal (gum disease origin, along the lateral root), or pericoronal (around an erupting tooth); treatment is drainage and elimination of the source.
Plain English: A pocket of pus caused by a bacterial infection — it can form at the tip of a tooth's root (from a dead nerve), in the gum alongside a root, or around an erupting wisdom tooth.
Materials · Basic · Core · student, lab
Clinical: A resin-based material applied to etched enamel and/or primed dentin to create a micromechanical bond between the tooth surface and composite resin restorations; available in total-etch, self-etch, and universal formulations.
Plain English: A special glue applied to the tooth before placing a filling — it makes the tooth-colored material stick securely to your natural tooth.
Pediatric · Intermediate · Nice-to-know · student, radiology
Clinical: Dental age is assessed by the stage of tooth development and eruption visible on radiographs (most commonly the Demirjian or Moorrees methods); may differ from chronological age; used in forensic dentistry, growth assessment, and timing orthodontic treatment in patients with uncertain birth dates.
Plain English: Using the stage of tooth development visible on X-rays to estimate a patient's biological age — teeth follow a fairly predictable development timeline that can reveal true age even without records.
Oral Medicine · Basic · Core · student, front-desk
Clinical: A spectrum of psychological responses — from mild apprehension to severe phobia (odontophobia) — to dental treatment or the dental environment; a significant barrier to dental care affecting up to 20% of adults and leading to avoidance, disease progression, and poorer oral health outcomes.
Plain English: Fear or worry about dental visits that ranges from mild nervousness to extreme phobia — it's very common and something the dental team actively works to manage through communication, sedation, and technique.
Procedure · Basic · Core · student
Clinical: Complete isolation of the operative field using a rubber dam, clamp, and frame; the rubber dam is punched with holes for each tooth to be isolated, stretched over the clamps, and secured with the frame; creates a moisture-free, contamination-free field for adhesive restorations and endodontic treatment.
Plain English: A complete dry field setup using a rubber sheet held around the teeth with clamps — it keeps saliva and blood off the teeth completely, which is essential for the best filling and root canal results.
Preventive · Intermediate · Core · student, pediatric
Clinical: A developmental alteration of enamel structure caused by excessive systemic fluoride ingestion during the period of enamel formation (approximately birth to age 8); ranges from mild (white opaque striations) to severe (pitting, brown staining, structural loss); the permanent incisors are most commonly affected.
Plain English: White spots or brown stains on teeth caused by too much fluoride swallowed during tooth development in early childhood — mild forms are cosmetic only; severe forms cause structural damage.
Insurance · Basic · Core · student, front-desk
Clinical: A dental insurance plan in which enrollees must select a primary care dentist from a contracted network and receive all care from that provider or through referrals; premiums are lower but provider choice is restricted.
Plain English: A type of dental plan where you choose one dentist from a list and get all your dental care through them — it's usually cheaper but limits your choice of providers.
Pediatric · Basic · Core · student, front-desk, pediatric
Clinical: The ongoing relationship between the dentist and the patient, inclusive of all aspects of oral health care delivered in a comprehensive, continuously accessible, coordinated, and family-centered way; the AAPD recommends establishing a dental home by age 1 or within 6 months of the first tooth eruption.
Plain English: The concept of each child having a regular dental provider they see from age 1 onward — creating a long-term preventive relationship before problems develop rather than only visiting for emergencies.
Implant · Intermediate · Core · student, lab
Clinical: A titanium or zirconia screw-form fixture surgically placed into alveolar bone to function as an artificial tooth root, supporting a crown, bridge, or overdenture.
Plain English: A titanium screw placed in your jawbone that acts as an artificial tooth root to support a replacement tooth.
Specialty · Basic · Core · student
Clinical: Magnifying eyewear worn by dental operators providing 2.5–6× magnification of the oral cavity; improves visual acuity for caries detection, margin preparation, and composite finishing; available as through-the-lens (TTL) or flip-up designs with varying working distances and declination angles.
Plain English: Magnifying glasses built into eyewear worn by dentists — they make teeth, margins, and fine details appear 2.5 to 6 times larger, improving precision and reducing eye strain.
Insurance · Intermediate · Core · front-desk
Clinical: An in-house alternative to dental insurance in which patients pay an annual fee directly to the dental practice in exchange for a defined set of benefits (typically two cleanings, exams, X-rays, and discounts on additional services); allows uninsured patients to receive preventive care at reduced cost.
Plain English: A yearly subscription plan offered directly by a dental office — patients pay an annual fee and get routine care included plus discounts on other services, without going through insurance.
Orthodontics · Basic · Core · student, front-desk
Clinical: The vertical reference line passing between the maxillary and mandibular central incisors; ideally coincides with the facial midline and with each other; discrepancies are assessed in millimeters and are a key esthetic and diagnostic parameter.
Plain English: The center line between your two upper front teeth and two lower front teeth — when these don't align with each other or with the center of your face, it's called a midline discrepancy.
Insurance · Basic · Core · student, front-desk
Clinical: A type of dental insurance plan that contracts with a network of preferred providers who agree to accept reduced fees; members can use out-of-network providers but pay higher out-of-pocket costs.
Plain English: A dental insurance plan that has a list of approved dentists who charge lower fees — you can still see other dentists, but it costs more.
Specialty · Intermediate · Core · student
Clinical: A dental specialty recognized by the ADA focused on the science and art of preventing and controlling dental diseases and promoting dental health through organized community efforts; addresses the oral health needs of populations rather than individual patients; includes policy, epidemiology, program development, and community fluoridation.
Plain English: The dental specialty focused on improving the oral health of communities rather than individual patients — through programs, policy, epidemiology, and prevention at the population level.
Specialty · Basic · Nice-to-know · student
Clinical: The dental specialty concerned with the science and art of preventing and controlling dental diseases and promoting dental health through organized community efforts; focuses on population-level interventions rather than individual patient care.
Plain English: The dental specialty focused on improving oral health across entire communities — through water fluoridation, school dental programs, and public health policy — rather than treating individual patients.
Preventive · Intermediate · Core · student, front-desk, pediatric
Clinical: A school-based or community preventive program delivering dental sealants to children (typically ages 6–14) at no cost; shown to reduce pit-and-fissure caries in first and second permanent molars by up to 80%; cost-effective public health intervention targeting underserved populations.
Plain English: Community programs that apply protective sealants to children's back teeth at school or community health events — highly effective and cost-effective for reducing cavities in underserved communities.
Specialty · Intermediate · Core · student, front-desk
Clinical: The colonization of internal dental unit waterlines by biofilm-forming bacteria, particularly Pseudomonas aeruginosa and Legionella species; these biofilms shed planktonic bacteria into the water delivered to patients during treatment from air-water syringes and handpieces.
Plain English: Bacterial buildup inside the thin water tubes in dental chairs — the water that sprays on teeth during treatment can harbor harmful bacteria if the waterlines are not regularly treated.
Specialty · Intermediate · Core · student, front-desk
Clinical: Dental unit waterlines (tubings delivering water to handpieces, syringes, and ultrasonic scalers) can harbor biofilm containing bacteria including Legionella; require daily flushing, weekly or continuous treatment with chemical tablets or cartridges, and regular water quality testing to maintain <500 CFU/mL.
Plain English: The small water tubes inside dental chairs that supply the drill and water syringe — they can grow bacterial biofilm and must be regularly flushed and treated to keep the water safe.
Pathology · Intermediate · Core · student, radiology
Clinical: The most common developmental odontogenic cyst, forming from the reduced enamel epithelium attached to the crown of an impacted or unerupted tooth; radiographically appears as a well-defined radiolucency surrounding the crown of an unerupted tooth, attached at the cemento-enamel junction.
Plain English: A fluid-filled sac that develops around the crown of a tooth that is stuck in the jaw — the most common type of jaw cyst, usually found around impacted wisdom teeth on X-ray.
Anatomy · Basic · Core · student
Clinical: Calcified tissue comprising the bulk of tooth structure beneath the enamel and cementum, containing microscopic dentinal tubules connected to the pulp.
Plain English: The softer layer under your tooth's enamel that makes up most of the tooth structure.
Materials · Intermediate · Core · student
Clinical: An adhesive resin system applied to etched or conditioned tooth structure that penetrates the demineralized dentin collagen matrix (forming a hybrid layer) and provides micromechanical attachment for composite resin and other adhesive restorations.
Plain English: The adhesive 'glue' layer applied to the tooth before placing a composite filling — it seeps into the tooth surface to create a strong bond between the filling and the tooth.
Prosthodontics · Basic · Core · student, lab
Clinical: The part of a complete or partial denture that rests on the mucosal surfaces of the residual ridges and retains the artificial teeth; most commonly made from heat-cured PMMA acrylic resin; should accurately replicate the soft tissue anatomy for optimal retention and comfort.
Plain English: The pink acrylic or metal part of a denture that sits on the gums and holds the artificial teeth — its fit against the gum tissue determines how comfortable and stable the denture is.
Prosthodontics · Basic · Core · student, front-desk
Clinical: The procedure of resurfacing the tissue-bearing surface of a denture with new acrylic resin to improve its adaptation to the changed residual ridge contour; performed when the denture has become loose due to ridge resorption; available as chairside (direct) or laboratory (indirect) reline.
Plain English: A procedure to refit a denture that has become loose over time — new material is added to the inside of the denture to fill the gap created by jawbone shrinkage.
Oral Medicine · Basic · Core · student, front-desk
Clinical: Chronic inflammation of the denture-bearing mucosa caused by Candida albicans colonization of the denture surface, manifesting as diffuse erythema under a complete or partial denture; associated with continuous denture wear and poor denture hygiene.
Plain English: Redness and soreness of the gum tissue under a denture, caused by a yeast infection that grows on the denture surface — usually painless but needs treatment.
Digital Dentistry · Intermediate · Core · lab
Clinical: A laboratory scanning device that digitizes physical impressions, stone models, or wax-ups into STL files for CAD design.
Plain English: A lab machine that turns physical dental models into digital files for designing restorations on a computer.
Oral Medicine · Intermediate · Core · student, front-desk
Clinical: A bidirectional relationship between diabetes mellitus and periodontal disease: poorly controlled diabetes increases susceptibility to and severity of periodontitis, while severe periodontitis impairs glycemic control by contributing to systemic inflammation and insulin resistance.
Plain English: The two-way connection between diabetes and gum disease — diabetes makes gum disease worse, and severe gum disease makes blood sugar harder to control.
Lab Process · Intermediate · Core · student, lab
Clinical: A three-dimensional model made by adding wax to study models to simulate the proposed restorative outcome; used for treatment planning, patient communication, fabrication of surgical guides, and creation of provisional restorations via putty matrices.
Plain English: A wax model showing exactly how the finished dental work will look — built on a plaster copy of your teeth and used to plan and preview the final result before any treatment.
Procedure · Basic · Core · student, front-desk
Clinical: A space or gap between two adjacent teeth; most commonly refers to a gap between the maxillary central incisors (midline diastema); may be physiologic (in primary dentition), caused by a prominent labial frenum, or a consequence of tooth-size discrepancy, hypodontia, or habits.
Plain English: A gap between two teeth — most often the upper front teeth — which may close naturally during development or require orthodontic, restorative, or surgical treatment.
Digital Dentistry · Intermediate · Core · student, lab
Clinical: Digital Imaging and Communications in Medicine — the international standard format for medical and dental imaging data, including CBCT scans.
Plain English: The standard file format used to store and share medical and dental scan images.
Lab Process · Intermediate · Core · student, lab
Clinical: A precise, hard replica of a prepared tooth (made from die stone) isolated from a working cast on which a restoration is directly waxed, pressed, or milled; the die reproduces the exact margin of the preparation for accurate restoration fit.
Plain English: A super-hard plaster replica of a single prepared tooth — isolated from the full model so the lab technician can build the crown directly on it with perfect accuracy.
Lab Process · Intermediate · Core · lab
Clinical: A liquid material applied to the die in thin layers to create microscopic space for the cement luting agent between the internal surface of the restoration and the prepared tooth.
Plain English: A thin coating put on the tooth model that creates just enough space inside a crown for the cement that holds it in place.
Lab Process · Intermediate · Core · student, lab
Clinical: A resin-based solution painted onto the die in several thin coats before waxing, creating a controlled space (typically 15–30μm per coat) between the internal surface of the completed restoration and the tooth preparation; this space accommodates the cement film thickness, allowing the crown to seat fully.
Plain English: A liquid painted onto the stone model tooth before waxing the crown — it creates a thin space inside the crown to accommodate the cement so the crown seats all the way down.
Lab Process · Basic · Core · student, lab
Clinical: A high-strength gypsum product (Type IV or V) poured into impressions to create precise working models used in prosthetic fabrication.
Plain English: A very hard plaster-like material used to make an exact model of your teeth from an impression.
Lab Process · Intermediate · Core · lab
Clinical: The laboratory process of removing excess stone from a poured die to isolate individual tooth preparations for accurate margin identification and restoration fabrication.
Plain English: A lab step where extra plaster is carefully removed from a tooth model so the edges of the preparation are clearly visible.
Digital Dentistry · Advanced · Nice-to-know · lab, front-desk
Clinical: A complete or partial denture designed using CAD software and fabricated by milling or 3D printing from digital records, without traditional impressions or wax try-ins.
Plain English: A denture designed and made digitally using computer software and a printer or milling machine, skipping traditional steps.
Digital Dentistry · Basic · Nice-to-know · student, lab
Clinical: An optical intraoral scan that captures 3D geometry of teeth and soft tissue, producing an STL file for CAD/CAM fabrication.
Plain English: A computer scan of your teeth using a small wand instead of traditional impression putty.
Radiology · Basic · Core · student, front-desk
Clinical: A radiographic imaging system in which a digital sensor or phosphor plate replaces traditional film; captures images instantly, displays them on a monitor, and allows adjustment of contrast and brightness, reducing radiation exposure by up to 80% versus conventional film.
Plain English: X-rays taken with a digital sensor instead of film — images appear on a computer screen instantly, use less radiation, and can be easily shared and stored.
Digital Dentistry · Intermediate · Core · student, lab, front-desk
Clinical: A digital treatment planning protocol using photographs, videos, and smile analysis software to design and communicate the desired esthetic outcome before any tooth preparation; allows patient co-diagnosis, wax-up fabrication, and provision of predictable esthetic restorations.
Plain English: A digital planning tool that lets the dentist design your new smile on a computer using photos — so both you and the dentist can see and agree on the result before any treatment begins.
Pathology · Intermediate · Nice-to-know · student, radiology
Clinical: A developmental distortion of a tooth in which the root or crown is bent or curved at an angle to the long axis of the tooth, caused by trauma or infection during tooth development disrupting the relationship between the calcified and uncalcified portions of the developing tooth.
Plain English: When a tooth's root or crown develops with a sharp bend or curve — usually caused by an injury to the area while the tooth was forming inside the bone.
Procedure · Basic · Nice-to-know · student, front-desk
Clinical: Placement of a tooth-colored resin-based restorative material directly into a prepared cavity, sculpted and polymerized in situ.
Plain English: A white filling placed directly in the tooth to repair a cavity.
Procedure · Intermediate · Core · student, front-desk
Clinical: A chairside cosmetic procedure in which composite resin is bonded directly to the facial surface of anterior teeth to change shape, color, length, or close diastemas; performed in a single appointment without laboratory fabrication, making it more affordable and reversible than porcelain veneers.
Plain English: A same-day cosmetic procedure where tooth-colored composite resin is bonded to the front of teeth to improve their appearance — no lab required, often done in one visit.
Oral Medicine · Intermediate · Core · student, front-desk
Clinical: A group of TMJ internal derangements in which the articular disc is displaced from its normal position anterior to the condyle; classified as disc displacement with reduction (clicking, no locking) or without reduction (closed lock — limited opening) based on MRI and clinical findings.
Plain English: When the jaw joint's cushioning disc slips out of position — with reduction it causes clicking but the disc returns to place; without reduction it causes the jaw to lock and limits opening.
Specialty · Basic · Core · student, front-desk
Clinical: The process of eliminating most pathogenic microorganisms (but not necessarily spores) from environmental surfaces and non-critical items using chemical disinfectants; dental operatory surfaces are disinfected between patients using intermediate-level disinfectants (EPA-registered hospital disinfectants).
Plain English: Cleaning and disinfecting dental chair surfaces, counters, and equipment between patients — using EPA-approved hospital disinfectants that kill most germs but are not as complete as sterilization.
Orthodontics · Advanced · Nice-to-know · student, lab
Clinical: A fixed intraoral palatal appliance using compressed NiTi coil springs to distalize maxillary molars without patient compliance.
Plain English: A fixed appliance inside your mouth that pushes your upper back teeth backward to create space.
Orthodontics · Advanced · Nice-to-know · student, lab
Clinical: A fixed intraoral maxillary molar distalization appliance using a Nance button for anchorage and spring-loaded tubes that push the maxillary molars distally; produces more bodily movement than the pendulum appliance; requires no patient compliance.
Plain English: A fixed non-compliance appliance on the upper teeth that uses spring pressure from the palate to push the upper molars backward into a better position.
Anatomy · Basic · Core · student, lab, front-desk
Clinical: The proximal surface of a tooth facing away from the midline of the dental arch.
Plain English: The side of a tooth that faces toward the back of your mouth.
Digital Dentistry · Intermediate · Core · student, lab
Clinical: A resin-based 3D printing technology that uses a UV light source projecting an entire layer at once to cure photopolymer resin, producing high-resolution dental models and appliances.
Plain English: A fast, high-precision 3D printing method that uses light-cured resin to create detailed models or dental appliances.
Specialty · Intermediate · Core · student
Clinical: The decayed, missing, and filled teeth index; an epidemiological measure of caries experience in permanent dentition counting the number of decayed (D), missing due to caries (M), and filled (F) teeth per individual; population means are used to compare caries prevalence across communities and time periods.
Plain English: The standard way to measure cavity experience in a population — counting how many teeth per person are decayed, have been pulled because of decay, or have been filled.
Pediatric · Intermediate · Core · student, pediatric
Clinical: Down syndrome (Trisomy 21) is associated with characteristic oral findings: macroglossia, hypodontia (missing teeth), delayed eruption, microdontia, taurodontism, Angle Class III malocclusion, high arched palate, severe early-onset periodontitis, and mouth breathing due to nasopharyngeal hypoplasia.
Plain English: Patients with Down syndrome have distinctive dental features — a larger tongue, missing or small teeth, delayed tooth eruption, and notably severe gum disease starting at a young age.
Insurance · Intermediate · Core · student, front-desk
Clinical: The practice by a dental insurance carrier of reimbursing a lower-cost alternative procedure than the one actually performed and billed; for example, paying for a three-surface amalgam when a composite resin was placed, or for a prefabricated crown instead of a custom crown.
Plain English: When an insurance company pays for a cheaper procedure than what was actually done — like paying for a silver filling when a tooth-colored one was placed.
Oral Surgery · Basic · Core · student, front-desk
Clinical: A painful post-extraction complication in which the blood clot in the extraction socket is lost or fails to form, exposing the underlying bone; typically presents 2–4 days after extraction.
Plain English: A painful condition after a tooth is pulled where the healing blood clot is lost, leaving the bone exposed — it causes a deep, throbbing ache that may radiate to the ear.
Oral Medicine · Intermediate · Nice-to-know · student
Clinical: A distortion or alteration of the sense of taste, which may present as metallic, bitter, or absent taste.
Plain English: A change in your sense of taste — things may taste metallic, bitter, or not taste like normal.
Materials · Intermediate · Nice-to-know · student, lab
Clinical: IPS e.max is a lithium disilicate glass-ceramic by Ivoclar Vivadent offering high flexural strength (~400 MPa) with excellent translucency for esthetic restorations.
Plain English: A strong tooth-colored ceramic material commonly used for crowns and veneers that looks very natural.
Pediatric · Intermediate · Core · front-desk, pediatric
Clinical: Presence of one or more decayed, missing (due to caries), or filled tooth surfaces in any primary tooth in a child younger than 6 years.
Plain English: Serious tooth decay in young children's baby teeth, sometimes called baby bottle tooth decay.
Pediatric · Basic · Core · student, front-desk, pediatric
Clinical: The presence of one or more decayed, missing (due to caries), or filled tooth surfaces in any primary tooth in a child younger than 6 years; when the pattern involves the smooth surface of anterior primary maxillary teeth, it is called severe ECC (S-ECC).
Plain English: Tooth decay in children under age 6 — often caused by frequent exposure to sugary drinks or prolonged bottle or breastfeeding; it can damage multiple teeth very quickly.
Pediatric · Basic · Nice-to-know · front-desk, pediatric
Clinical: Assessment of occlusion and jaw growth in a child to determine timing and need for interceptive orthodontic treatment.
Plain English: A check of how a child's teeth and jaws fit together to see if early braces or other treatment might help.
Orthodontics · Basic · Core · student, front-desk
Clinical: Small latex or polyurethane rings used in orthodontics to ligate archwires to brackets (ligatures), connect braces to hooks for Class II/III correction (intermaxillary elastics), or for retraction and space closure; intermaxillary elastics are worn by the patient and changed daily.
Plain English: Small rubber rings used in braces — either to hold the wire in the bracket slot or worn by the patient between upper and lower teeth to correct bite problems.
Specialty · Basic · Core · front-desk
Clinical: A digital system for recording and managing patient health information in a dental practice, including medical and dental histories, clinical notes, charting, radiographs, photographs, treatment plans, billing, and communications; increasingly replacing paper records in dental offices.
Plain English: The digital system used to store and manage everything about a dental patient — their records, X-rays, treatment history, and billing — replacing paper charts.
Prosthodontics · Intermediate · Nice-to-know · student, lab
Clinical: The contour of a restoration or natural tooth as it transitions from the implant platform or prepared tooth through the gingival tissue to the visible crown.
Plain English: The shape of your crown where it comes out of the gum — designed to look like a natural tooth root.
Implant · Intermediate · Core · student, lab
Clinical: The three-dimensional contour of a crown or abutment as it emerges from the gingival sulcus; an ideal emergence profile supports the peri-implant tissue and mimics the natural tooth root contour, preventing a 'gray shadow' or tissue collapse.
Plain English: The shape of the crown where it comes out of the gum — a natural-looking contour supports the gum tissue properly and prevents an unnatural appearance at the gum line.
Anatomy · Basic · Core · student
Clinical: The hardest biological substance in the human body (96% hydroxyapatite) forming the outer covering of the clinical crown.
Plain English: The hard, white outer layer of your tooth that protects it from decay.
Orthodontics · Basic · Core · student, lab
Clinical: The specific adhesive bonding of orthodontic brackets to enamel after acid etching; relies on micromechanical retention in the etched enamel surface; bracket bond strength must exceed 6–8 MPa in shear to withstand orthodontic forces while being cleanly removable at debonding.
Plain English: Gluing orthodontic brackets directly to the enamel surface — the acid-etched enamel creates tiny surface features the adhesive locks into, creating a bond strong enough for treatment but removable at the end.
Pathology · Intermediate · Core · student, pediatric
Clinical: A quantitative enamel defect caused by disruption of ameloblast function during enamel matrix formation, resulting in reduced enamel thickness; manifests as pits, grooves, or missing enamel on the crown surface; causes include systemic illness, fever, nutritional deficiency, or local infection during tooth development.
Plain English: A defect where not enough enamel forms on a tooth — leaving pits, grooves, or thin areas — caused by illness or nutritional problems that occurred while the tooth was developing.
Radiology · Intermediate · Nice-to-know · student, radiology
Clinical: An ectopic deposit of enamel on the root surface (most commonly in the furcation area of maxillary molars) formed during aberrant development; appears as a small, highly radiopaque nodule at or below the cementoenamel junction on radiographs.
Plain English: A small round deposit of enamel on the root surface near the furcation of a molar — visible on X-rays as a tiny bright dot, and can promote localized plaque accumulation and periodontal disease.
Procedure · Advanced · Nice-to-know · student, front-desk
Clinical: Re-treatment of a tooth that has previously undergone root canal therapy, involving removal of existing root filling material and refilling the canals.
Plain English: Repeating a root canal on a tooth that still has problems after the first treatment.
Specialty · Basic · Nice-to-know · student
Clinical: The dental specialty focused on the biology of the dental pulp, etiology and diagnosis of pulpal and periapical diseases, and their prevention and treatment, including root canal therapy, retreatment, and periapical surgery.
Plain English: The branch of dentistry that diagnoses and treats problems inside the tooth — especially root canals and infections at the root tip.
Insurance · Basic · Core · student, front-desk
Clinical: A document sent by a dental insurance company to the subscriber and/or provider after a claim is processed, showing the procedure billed, the allowed amount, what the insurance paid, and the patient's responsibility.
Plain English: A summary statement from your insurance company that shows what they paid for your dental visit and what you owe — it is not a bill.
Specialty · Intermediate · Core · student, front-desk
Clinical: A vasoconstrictor (adrenaline) added to local anesthetic solutions to slow systemic absorption, prolong anesthetic duration, reduce anesthetic toxicity, and improve hemostasis at the injection site; dental cartridges contain 1:100,000 (10μg/mL) or 1:200,000 (5μg/mL) concentrations.
Plain English: Adrenaline added to dental numbing medicine to make it work longer and reduce bleeding — by constricting blood vessels it keeps the anesthetic in the area and slows its absorption into the bloodstream.
Specialty · Intermediate · Core · student, front-desk
Clinical: A sympathomimetic catecholamine added to local anesthetic solutions as a vasoconstrictor to prolong anesthetic duration, reduce systemic absorption, improve anesthetic depth, and reduce bleeding at the injection site; standard concentrations are 1:100,000 and 1:200,000.
Plain English: Adrenaline added to dental numbing solutions to make the anesthetic last longer and keep the medication where it's injected — it also reduces bleeding during procedures.
Specialty · Intermediate · Core · student, front-desk
Clinical: A pre-filled, single-dose epinephrine injection device (0.3mg adult / 0.15mg pediatric) used as first-line treatment for anaphylaxis in the dental office; injection into the anterolateral thigh rapidly reverses bronchospasm, hypotension, and urticaria of a systemic allergic reaction.
Plain English: An emergency auto-injector ('EpiPen') kept in every dental office to immediately treat a severe allergic reaction — injected into the thigh, it reverses life-threatening swelling and breathing problems within minutes.
Specialty · Intermediate · Core · student, front-desk
Clinical: The application of scientific principles to design and arrange the dental operatory, equipment, and work practices to maximize efficiency and minimize musculoskeletal disorders; addresses operator posture, patient positioning, instrument reach, and repetitive motion injury prevention.
Plain English: The study of how to set up the dental workspace and position the body during procedures to prevent repetitive strain injuries — dental professionals have very high rates of back, neck, and wrist problems.
Lesion Descriptor · Basic · Nice-to-know · student
Clinical: Shallow, depressed lesion that represents a partial loss of the epithelium, usually without scarring on healing.
Plain English: A shallow raw area on the surface where the top layer of tissue has rubbed or worn off.
Pediatric · Basic · Nice-to-know · front-desk, pediatric
Clinical: Emergence of a tooth into the oral cavity as it moves from its developmental position to its functional position in the arch.
Plain English: When a new tooth is coming in and starts to show through the gums.
Pediatric · Basic · Core · student, front-desk, pediatric
Clinical: The chronological order in which primary and permanent teeth erupt into the oral cavity; deviations from the typical sequence may signal dental or skeletal developmental anomalies.
Plain English: The order and approximate ages at which baby teeth and adult teeth are expected to come in — knowing this helps us spot problems early if a tooth is late or comes in out of order.
Pathology · Advanced · Nice-to-know · student
Clinical: Red patch of oral mucosa that cannot be characterized clinically or pathologically as any other condition and has a high risk of showing epithelial dysplasia or carcinoma.
Plain English: A bright red patch in the mouth that is more likely to be precancerous or cancerous.
Orthodontics · Basic · Core · student, lab
Clinical: A clear, vacuum-formed thermoplastic retainer that fits over the entire arch to maintain post-treatment tooth position.
Plain English: A clear plastic retainer that fits over all your teeth to keep them in place after braces.
Specialty · Intermediate · Core · student
Clinical: The integration of the best available scientific evidence with clinical expertise and patient values and preferences in dental decision-making; emphasizes systematic reviews and randomized controlled trials over anecdote and tradition; practiced through critical appraisal of the dental literature.
Plain English: The practice of making dental treatment decisions based on the best available scientific research rather than tradition or habit — combined with the patient's preferences and the clinician's expertise.
Pathology · Basic · Nice-to-know · student
Clinical: A benign bony outgrowth (hyperostosis) projecting from the cortical surface of the jaw; distinct from tori in that exostoses are more broadly distributed, often found on the buccal alveolar bone of both arches in the molar and premolar regions.
Plain English: A harmless bony bump that grows on the outer surface of the jaw — similar to a torus but usually found on the cheek side near the back teeth.
Pathology · Basic · Core · student
Clinical: A localized bony overgrowth on the buccal (outer) surface of the alveolar bone, most commonly found in the premolar and molar regions of the mandible and maxilla bilaterally; thought to be related to occlusal stress, genetic factors, or bruxism; benign with no malignant potential.
Plain English: Bony bumps on the outside of the jaw near the back teeth — harmless outgrowths of bone that can interfere with denture or partial denture construction and may need surgical removal.
Orthodontics · Intermediate · Nice-to-know · student, lab
Clinical: A fixed palatal appliance with a jackscrew that gradually separates the mid-palatal suture to widen the maxillary arch.
Plain English: A fixed device on the roof of your mouth that slowly widens your upper jaw.
Procedure · Basic · Nice-to-know · student
Clinical: A sharp-ended dental instrument (typically a No. 23 shepherd's hook) used to tactilely examine tooth surfaces for caries, calculus, and defective restorations.
Plain English: A small pointed tool the dentist uses to feel for soft spots, rough areas, or cracks on your teeth. In children's appointments often called a 'tooth counter.'
Endodontics · Advanced · Core · student, radiology
Clinical: Resorption of root cementum and dentin that originates from the external surface of the root, driven by clastic cells in the periodontal ligament or adjacent tissue; types include cervical (inflammatory), replacement (ankylosis-related), and apical (orthodontic-induced).
Plain English: When the outside of a tooth's root is being dissolved — it can be caused by trauma, orthodontic forces, or chronic infection, and is visible on X-rays as shortening or notching of the root.
Insurance · Intermediate · Nice-to-know · front-desk
Clinical: A review of a plan's adverse determination by an independent third-party organization after internal appeals are exhausted or in urgent cases.
Plain English: A review by specialists outside your insurance company to decide if it should pay for a service it denied.
Orthodontics · Advanced · Core · student
Clinical: The strategic selection of specific teeth for removal to create space for alignment, overjet reduction, or profile improvement; common patterns include four first premolars (maximum retraction), two upper premolars (asymmetric), or lower premolar only.
Plain English: The specific teeth chosen for removal to create space during orthodontic treatment — different patterns are chosen depending on whether the crowding is in one or both jaws.
Orthodontics · Advanced · Core · student, lab
Clinical: An orthodontic tooth movement that moves a tooth occlusally (out of the bone), increasing its clinical crown height; used to correct open bites, expose subgingival margins, or erupt impacted teeth.
Plain English: Moving a tooth downward to bring it into the bite or to expose more tooth structure above the gum line.
Lab Process · Advanced · Nice-to-know · student, lab
Clinical: A caliper-like device used to transfer the spatial relationship of the maxillary arch to the temporomandibular joint axis to the articulator, ensuring that the casts are mounted at the correct angle and distance to reproduce the patient's actual jaw movements.
Plain English: A measurement device that records how the upper jaw relates to the jaw joint — used to mount dental models on the articulator in a way that accurately copies the patient's own jaw movements.
Lab Process · Advanced · Core · lab
Clinical: A caliper-like instrument used to record the spatial relationship of the maxillary arch to the temporomandibular joints and transfer this relationship to an articulator.
Plain English: A device used to measure and transfer how your upper teeth relate to your jaw joint, so the dental lab can replicate your bite accurately.
Orthodontics · Advanced · Core · student
Clinical: The direction of mandibular growth, classified as horizontal (low-angle, deep bite tendency), vertical (high-angle, open bite tendency), or average (normal); assessed from cephalometric measurements and used to guide appliance selection and treatment planning.
Plain English: The direction your jaw grows — whether mostly forward (horizontal) or downward (vertical) — which affects what kind of bite problems you develop and how they're best treated.
Anatomy · Intermediate · Core · student
Clinical: The seventh cranial nerve, primarily motor to the muscles of facial expression; passes through the parotid gland and divides into five branches: temporal, zygomatic, buccal, marginal mandibular, and cervical; dental relevance includes parotid gland surgery risk, Bell's palsy, and Ramsay Hunt syndrome.
Plain English: The nerve controlling all facial expression muscles — it passes through the parotid gland, making it at risk during parotid surgery; Bell's palsy is its most common disorder causing one-sided facial drooping.
Anatomy · Intermediate · Nice-to-know · student, lab
Clinical: An international two-digit tooth numbering system in which the first digit indicates the quadrant (1–4 permanent; 5–8 primary) and the second digit indicates the tooth position within the quadrant (1–8).
Plain English: An international shorthand for labeling teeth using a two-digit number — for example, tooth 16 is the upper left first molar.
Insurance · Intermediate · Core · front-desk
Clinical: A list of predetermined maximum amounts that a dental benefit plan will pay for each covered service, used to calculate the patient's out-of-pocket responsibility.
Plain English: The list of set amounts your insurance plan will pay for each type of dental work.
Insurance · Intermediate · Core · front-desk
Clinical: The list of maximum fees that a dental provider agrees to accept for specific CDT-coded procedures when participating in a dental insurance plan (contracted/PPO); the schedule is negotiated between the provider and the insurance carrier and typically set below the dentist's standard UCR fee.
Plain English: The agreed-upon list of maximum charges a dentist accepts from an insurance plan — if you're in-network, the dentist has agreed to these discounted rates.
Materials · Advanced · Core · student, lab
Clinical: The most traditional dental ceramic, composed primarily of feldspar minerals; characterized by high esthetics and translucency but relatively low strength; used as a veneering material over metal or zirconia frameworks and for pressed ceramic restorations.
Plain English: The classic tooth-colored porcelain used in dentistry — it looks very natural but is more fragile than modern ceramics, so it's often layered over a stronger base.
Prosthodontics · Advanced · Core · student, lab
Clinical: The encirclement of the natural tooth structure by the crown margin at least 1–2 mm above the finish line, providing resistance to fracture and improving crown retention.
Plain English: Having at least 1–2 mm of healthy tooth wall above the gum line for a crown to grip — critical for long-term crown success.
Prosthodontics · Intermediate · Nice-to-know · lab
Clinical: The laboratory process of carving and contouring the acrylic resin of a denture base to simulate the natural form of the gingiva, alveolar mucosa, muscle attachments, and root prominences for a lifelike appearance.
Plain English: The detailed artistic shaping of the pink part of a denture to make it look like natural gum tissue, including the little scalloped ridges between each tooth.
Endodontics · Advanced · Nice-to-know · student
Clinical: A prefabricated glass fiber or carbon fiber post cemented into a prepared root canal space to retain a core buildup prior to crown placement.
Plain English: A small post placed inside your tooth root after a root canal to help support a crown.
Pathology · Intermediate · Nice-to-know · student
Clinical: Common benign reactive hyperplasia of fibrous connective tissue, often resulting from chronic irritation such as biting.
Plain English: A small, firm bump in the mouth caused by chronic irritation, like cheek or lip biting.
Pathology · Advanced · Core · student
Clinical: A benign fibro-osseous lesion in which normal bone is replaced by abnormal fibrous connective tissue containing immature woven bone; caused by GNAS gene mutation; jaw presentation: painless swelling causing facial asymmetry; radiographically: 'ground glass' appearance without distinct border.
Plain English: A condition where normal bone in the jaw is replaced by a fibrous tissue — it causes gradual painless swelling of the face and has a characteristic frosted glass appearance on X-ray.
Procedure · Intermediate · Core · student, lab
Clinical: The prepared boundary at the gingival extent of a tooth preparation that defines the edge of an indirect restoration; types include chamfer, shoulder, feather edge, and knife-edge.
Plain English: The shaped edge at the base of a crown preparation that determines where the crown ends.
Orthodontics · Intermediate · Core · student
Clinical: The final phase of active orthodontic treatment in which fine adjustments are made to tooth position, torque, angulation, and contacts to achieve ideal occlusion before appliance removal; may involve artistic wire bends or selective bracket repositioning.
Plain English: The last stage of braces treatment where small final adjustments are made to get every tooth exactly where it should be before the braces come off.
Lesion Descriptor · Basic · Nice-to-know · student
Clinical: Linear crack or groove in the mucosa or skin that may extend into the dermis or deeper tissues.
Plain English: A long, narrow crack or groove in the tissue, like a split in the tongue or lip.
Oral Medicine · Basic · Nice-to-know · student, front-desk
Clinical: A common anatomical variant characterized by multiple grooves or furrows on the dorsal surface of the tongue; associated with geographic tongue, Melkersson-Rosenthal syndrome, Down syndrome, and advancing age; usually asymptomatic but debris can accumulate causing halitosis.
Plain English: A tongue with natural grooves or cracks on its surface — a common harmless variant that can trap food debris and cause bad breath if not cleaned.
Orthodontics · Intermediate · Core · student, front-desk
Clinical: A flexible multi-strand wire bonded to the lingual surfaces of the anterior teeth (typically canine-to-canine) after orthodontic treatment; provides continuous, passive retention without patient compliance; most effective at preventing anterior tooth relapse and spacing.
Plain English: A thin wire glued to the back of the front teeth after braces — it holds them in place permanently without the patient needing to remember to wear anything.
Procedure · Intermediate · Nice-to-know · student, front-desk
Clinical: Surgical reflection of gingival tissue to allow access for root debridement, bone recontouring, and periodontal defect management.
Plain English: Lifting the gums back so the dentist can clean roots and bone and then reposition the tissue.
Lab Process · Intermediate · Nice-to-know · lab
Clinical: The process of investing a wax denture setup in a two-part dental flask with gypsum before processing, so that the wax can be eliminated and replaced with acrylic resin.
Plain English: The step where a wax model of a denture is packed into a special mold before being converted into the final acrylic appliance.
Prosthodontics · Intermediate · Nice-to-know · student, lab
Clinical: An acrylic removable partial denture used as a temporary tooth replacement, typically worn during healing phases.
Plain English: A removable plastic temporary tooth used while waiting for a permanent replacement.
Materials · Basic · Core · student
Clinical: A low-viscosity resin composite with a reduced filler content that allows it to be injected through a fine tip into small cavities and undercuts; used as a liner, base, or for minimal cavity preparations.
Plain English: A thin, runny version of tooth-colored filling material that can flow into tight spaces — used for small cavities, as a first layer, or for sealing fine cracks.
Lesion Descriptor · Basic · Nice-to-know · student
Clinical: Physical sign indicating the presence of fluid within a lesion, giving a wave-like or compressible feel on palpation.
Plain English: When a lump feels like it has fluid inside and moves or compresses when pressed.
Preventive · Basic · Core · student, front-desk
Clinical: A mineral ion that incorporates into hydroxyapatite to form fluorapatite, reducing enamel solubility and inhibiting demineralization by bacterial acids.
Plain English: A mineral that makes your teeth stronger and more resistant to cavities.
Preventive · Intermediate · Core · student, pediatric
Clinical: Systemic fluoride (ingested via water, supplements) is incorporated into developing tooth enamel before eruption, making it more resistant to acid; topical fluoride (applied to erupted teeth as varnish, gel, or rinse) remineralizes enamel surface after acid challenges, preventing and reversing early caries.
Plain English: Fluoride works two ways: swallowed during childhood it strengthens forming teeth from the inside, and applied to erupted teeth it repairs early acid damage and hardens the surface.
Preventive · Basic · Core · student, front-desk, pediatric
Clinical: Topical application of a high-concentration fluoride agent (typically 5% sodium fluoride) in a resin or varnish base to tooth surfaces for caries prevention. Used in both adult and pediatric preventive protocols.
Plain English: A sticky fluoride coating painted on the teeth to help make them stronger and more resistant to cavities. Quick to apply and safe for all ages.
Preventive · Basic · Core · student, front-desk, pediatric
Clinical: A concentrated fluoride preparation (typically 5% sodium fluoride = 22,600 ppm) in a resin or shellac carrier painted onto tooth surfaces and allowed to set with saliva; the carrier prolongs contact time, enhancing fluoride uptake into enamel.
Plain English: A sticky fluoride coating painted on teeth that stays in contact for several hours — providing a high dose of fluoride to strengthen enamel and prevent cavities.
Pathology · Basic · Core · student
Clinical: A developmental defect of enamel caused by excessive fluoride intake during tooth formation (ages 0–7 years), presenting as white opacities (mild), white/tan staining with pitting (moderate), or brown/pitted enamel (severe); primarily a cosmetic issue in mild forms.
Plain English: Discoloration or pitting of teeth caused by taking in too much fluoride during childhood while teeth were developing — mild cases show white spots; severe cases show brown staining or pits.
Orthodontics · Advanced · Nice-to-know · student, lab
Clinical: A fixed functional Class II corrector using a nickel-titanium push-spring module attached to the upper archwire and lower first molar to advance the mandible.
Plain English: A fixed spring attached to your braces that helps correct an overbite by pushing your lower jaw forward.
Orthodontics · Advanced · Nice-to-know · student
Clinical: A fixed Class II corrector consisting of a push rod and spring module that attaches between the maxillary arch (at the molar tube) and the mandibular arch (on the archwire); works continuously without patient compliance to advance the mandible and correct Class II relationships.
Plain English: A fixed spring device attached inside the braces that automatically pushes the lower jaw forward to correct an overbite — it works without the patient needing to wear elastics.
Procedure · Basic · Core · student, front-desk
Clinical: An ergonomic approach to dental treatment in which the operator and a dental assistant work together simultaneously (four hands total) at the dental chair, with the assistant transferring instruments, managing suction, and mixing materials to maximize efficiency and minimize operator reach and fatigue.
Plain English: A team approach to dentistry where the dentist and assistant work together simultaneously — reducing procedure time, minimizing the dentist's reaching and twisting, and improving patient care.
Periodontics · Advanced · Core · student
Clinical: A mucogingival procedure in which a full-thickness graft of keratinized epithelium and connective tissue is harvested from the palate and placed at a recipient site to increase the width of attached gingiva around teeth or implants.
Plain English: A gum graft where a piece of tissue including the surface layer is taken from the roof of the mouth and placed at another site to build up the band of firm gum tissue.
Anatomy · Basic · Core · student
Clinical: The most coronal edge of the gingiva, forming the rim of the gingival sulcus; its position relative to the CEJ is the reference point for measuring gingival recession.
Plain English: The very top edge of your gum tissue — the part that you can see where the gum meets the tooth.
Prosthodontics · Intermediate · Core · student, lab
Clinical: The space between the upper and lower teeth when the mandible is in physiologic rest position; normally 2–4mm and represents the difference between the rest vertical dimension and the occlusal vertical dimension.
Plain English: The natural gap between your upper and lower teeth when your jaw muscles are fully relaxed — typically about 2–3mm.
Procedure · Intermediate · Nice-to-know · student, front-desk
Clinical: Surgical removal or release of a frenum, such as labial or lingual, to improve function or prosthetic fit.
Plain English: Cutting or releasing a tight tissue attachment under the lip or tongue to improve movement or fit.
Anatomy · Basic · Core · student, pediatric
Clinical: A fold of mucous membrane connecting the lips or cheeks to the alveolar mucosa; the maxillary labial frenum inserts between the upper central incisors and may cause a persistent midline diastema if the frenal attachment is low; the mandibular labial frenum connects the lower lip to the anterior mandible.
Plain English: The band of tissue connecting the upper or lower lip to the gum — a prominent upper one can create a gap between the front teeth and may need to be released surgically.
Prosthodontics · Basic · Core · student, lab
Clinical: A restoration fabricated entirely of metal alloy (gold, CoCr, or NiCr) that covers the entire clinical crown, providing maximum strength.
Plain English: An all-metal crown, often gold, that completely covers the tooth — extremely durable.
Radiology · Basic · Core · student, front-desk
Clinical: A complete radiographic survey consisting of 14–21 periapical and 4 bitewing radiographs covering all teeth and supporting bone; the most comprehensive intraoral radiographic examination; recommended at new patient examinations and at intervals based on caries and periodontal risk.
Plain English: A complete set of X-rays covering every tooth from different angles — the most thorough dental X-ray series, taken when a patient is new or needs a full evaluation.
Prosthodontics · Advanced · Core · student, lab
Clinical: A comprehensive dental treatment plan involving the restoration of all or most teeth in both arches, typically combining crowns, bridges, implants, and periodontal treatment to restore form, function, and esthetics.
Plain English: A complete rebuilding of your entire mouth — all the upper and lower teeth — to restore your bite, function, and appearance when extensive damage or wear has occurred.
Lab Process · Advanced · Nice-to-know · lab
Clinical: An articulator that can be programmed with individualized patient jaw movement data from a pantographic or axiographic recording, providing the most accurate reproduction of mandibular movements.
Plain English: The most precise type of bite simulator used in the lab, programmed with data specific to how a patient's jaw actually moves.
Orthodontics · Intermediate · Nice-to-know · student, lab
Clinical: A removable or semi-fixed appliance that redirects masticatory muscle forces to modify skeletal jaw growth patterns in growing patients.
Plain English: A dental device that repositions your jaw to help it grow in the right direction during childhood.
Anatomy · Intermediate · Core · student
Clinical: The anatomical area where the roots of a multi-rooted tooth diverge from the root trunk; furcation involvement is a sign of significant bone loss in periodontal disease.
Plain English: The area where a tooth's roots split apart; when gum disease reaches this point, it signals more serious bone loss.
Radiology · Intermediate · Core · student, radiology
Clinical: The area between the roots of a multi-rooted tooth visible on radiographs; the radiographic furcation entrance bone level is an important indicator of the severity of periodontal disease affecting multi-rooted teeth, appearing as a triangular radiolucency in advanced furcation involvement.
Plain English: The area between the roots of a multi-rooted tooth on X-ray — bone loss in this area appears as a dark shadow between the roots and signals advanced gum disease.
Periodontics · Intermediate · Core · student
Clinical: The extension of periodontal disease into the area between two or more roots of a multi-rooted tooth; classified by probe depth and remaining bone: Class I (early), Class II (through-and-through not achieved), Class III (through-and-through probe passage).
Plain English: When gum disease has reached the area between the roots of a back tooth — the deeper it goes, the harder the tooth is to clean and save.
Materials · Intermediate · Nice-to-know · student
Clinical: An electric current generated when two dissimilar metals in saliva create an electrochemical cell; most commonly occurs when a gold crown and an amalgam restoration are placed in opposing or adjacent positions; manifests as a sharp, shooting pain when the metals contact.
Plain English: A brief electric shock-like pain caused when two different metal fillings or crowns touch — the metals and saliva create a tiny battery-like current that stimulates the nerve.
Pediatric · Advanced · Core · student, front-desk, pediatric
Clinical: Deep sedation or general anesthesia administered in a hospital or ambulatory surgical center to allow comprehensive dental treatment in young children, extremely anxious patients, or medically compromised patients who cannot be managed safely under local anesthesia or lighter sedation.
Plain English: Full anesthesia that puts a child completely to sleep for dental treatment — used for very young children, severely anxious patients, or those with special needs who cannot cooperate with dental care while awake.
Pathology · Intermediate · Nice-to-know · student
Clinical: Benign migratory glossitis characterized by multifocal erythematous depapillated areas on the tongue surrounded by white or yellowish borders.
Plain English: A harmless condition where smooth red patches with white edges move around on the tongue.
Oral Medicine · Basic · Nice-to-know · student, front-desk
Clinical: A common benign inflammatory condition of the tongue characterized by irregular, smooth red patches surrounded by white/yellow borders that change location over days to weeks; caused by loss of filiform papillae in a migrating pattern.
Plain English: A harmless condition where smooth red patches with white borders appear on the tongue and change location over time — it looks unusual but is not dangerous or contagious.
Oral Medicine · Intermediate · Core · student, front-desk
Clinical: Gastroesophageal reflux disease causes acid from the stomach to reach the oral cavity during sleep or regurgitation; chronic exposure causes erosion of the palatal surfaces of maxillary posterior teeth and later the occlusal surfaces of mandibular teeth; an important but frequently undiagnosed etiology of tooth erosion.
Plain English: Chronic acid reflux that damages teeth — the stomach acid dissolves the enamel on the roof-of-mouth side of the upper back teeth when reflux occurs during sleep.
Specialty · Intermediate · Core · student, front-desk
Clinical: The branch of dentistry concerned with the oral health needs of older adults (typically 65+); addresses age-related changes in oral tissues, polypharmacy effects, systemic disease management, cognitive decline, mobility limitations, and increased risk of root caries and xerostomia.
Plain English: The branch of dentistry focused on older adult patients — managing the unique combination of dry mouth, root cavities, medication effects, and physical limitations that come with aging.
Radiology · Intermediate · Nice-to-know · student, radiology
Clinical: An artifact on a panoramic radiograph produced when a radiopaque object (jewelry, earring, denture metal) on one side of the patient creates a blurred, reversed, and higher image on the opposite side of the film; must be distinguished from actual anatomy or pathology.
Plain English: A blurry shadow on a panoramic X-ray that appears on the opposite side from a metal object worn by the patient — it's an artifact, not a real finding.
Anatomy · Basic · Core · student
Clinical: The mucosal tissue surrounding and supporting the teeth and covering the alveolar bone; comprises free (marginal) and attached gingiva.
Plain English: Your gums — the pink tissue that surrounds and supports your teeth.
Periodontics · Intermediate · Core · student
Clinical: Description of the thickness and texture of a patient's gingival tissue; classified as thin-scalloped or thick-flat.
Plain English: Whether your gums are naturally thin and delicate or thick and sturdy — this affects how restorations are designed.
Periodontics · Intermediate · Core · student, front-desk
Clinical: Enlargement of the gingival tissues due to fibrous overgrowth; may be drug-induced (phenytoin, cyclosporine, calcium channel blockers), hereditary (hereditary gingival fibromatosis), or inflammatory; the enlarged tissue creates pseudo-pockets that harbor plaque.
Plain English: Overgrowth of the gum tissue — often caused by certain medications (seizure drugs, blood pressure drugs) — creating enlarged puffy gums that make cleaning difficult.
Periodontics · Intermediate · Core · student, front-desk
Clinical: The apical migration of the gingival margin below the cementoenamel junction, exposing root surface; classified by the Miller (1985) or Cairo (2011) classification systems; may be caused by brushing trauma, periodontal disease, frenum pull, or orthodontic tooth movement.
Plain English: When the gum line pulls back to expose the root of the tooth — it can cause sensitivity, cosmetic concerns, and increased decay risk on the exposed root.
Anatomy · Basic · Core · student
Clinical: The shallow groove or space between the free gingiva and the tooth surface, normally 1–3mm deep; deeper than 3mm with bleeding on probing suggests periodontal disease.
Plain English: The small natural gap between your gum and your tooth — healthy gums have a very shallow gap; deep gaps signal gum disease.
Periodontics · Intermediate · Nice-to-know · student
Clinical: Surgical excision of gingival tissue to eliminate periodontal pockets or recontour gingiva for esthetic or functional reasons.
Plain English: Removal of gum tissue to treat gum disease pockets or improve the appearance of your gum line.
Pathology · Basic · Core · student
Clinical: Reversible inflammation of the gingival tissues without loss of clinical attachment, caused primarily by bacterial biofilm accumulation.
Plain English: Early gum disease that makes gums red, swollen, and likely to bleed — but fully reversible with cleaning.
Procedure · Intermediate · Nice-to-know · student, front-desk
Clinical: Surgical reshaping of gingival tissue to create physiologic contours without necessarily eliminating pockets.
Plain English: Shaping the gums to look and function better without necessarily removing deep pockets.
Materials · Basic · Core · student, pediatric
Clinical: A tooth-colored restorative material that bonds chemically to tooth structure through an acid-base reaction, releases fluoride over time, and is used for low-stress restorations, base/liner applications, and pediatric dentistry.
Plain English: A tooth-colored filling material that sticks directly to your tooth and slowly releases fluoride to help prevent future decay.
Materials · Basic · Core · student, lab
Clinical: A water-based dental cement that sets via an acid-base reaction between glass powder and polyacrylic acid; bonds chemically to tooth structure (no etching required), releases fluoride, and is biocompatible; used as a base, liner, cement, or restorative material.
Plain English: A tooth-colored cement or filling material that bonds directly to the tooth without adhesives and slowly releases fluoride — used as a protective base under fillings, for cementing crowns, and for small cavities, especially in high-cavity-risk patients.
Lab Process · Basic · Core · student, lab
Clinical: The final oven cycle applied to a ceramic restoration in which a thin layer of glaze material is fired onto the surface to create a smooth, highly polished, and natural-appearing finish that mimics the lustre of natural enamel.
Plain English: The final furnace step that coats a ceramic crown with a glassy surface — giving it the shine and natural appearance of real tooth enamel.
Lab Process · Intermediate · Core · student, lab
Clinical: The final firing step for a ceramic restoration in which a thin glassy layer (glaze) is fired onto the surface to produce a smooth, high-luster finish comparable to natural enamel; eliminates surface porosity, reduces plaque adherence, improves strength, and creates the final esthetic appearance.
Plain English: The final furnace step that puts a smooth, glassy finish on a ceramic crown — it creates the shine that mimics natural tooth enamel and seals the surface.
Lab Process · Intermediate · Core · lab
Clinical: The final surface treatment of ceramic restorations in which a thin glass layer is fused to the surface to produce a smooth, lifelike sheen.
Plain English: The final firing step for a ceramic restoration that creates a smooth, shiny surface similar to natural enamel.
Anatomy · Intermediate · Core · student
Clinical: The concave articular surface of the temporal bone in which the mandibular condyle articulates; separated from the condylar head by the articular disc; the posterior wall of the fossa is thin and not load-bearing — the articular eminence is the load-bearing surface.
Plain English: The cup-shaped socket in the skull where the jaw joint sits — the lower jaw's rounded condyle fits into this depression and moves forward along the articular eminence during opening.
Procedure · Advanced · Nice-to-know · student
Clinical: A high mandibular nerve block technique injecting anesthetic at the neck of the mandibular condyle, anesthetizing the entire distribution of the mandibular division of the trigeminal nerve (V3) including the IAN, lingual, buccal, mylohyoid, auriculotemporal, and mental nerves in a single injection.
Plain English: An advanced jaw injection technique that numbs virtually the entire lower jaw — including all the nerves — in a single shot by targeting a point higher up near the jaw joint than a standard block.
Anatomy · Intermediate · Core · student
Clinical: A branch of the maxillary division (V2) of the trigeminal nerve that exits through the greater palatine foramen and supplies sensory innervation to the hard palate and palatal gingiva of the posterior maxillary teeth; targeted by the greater palatine nerve block.
Plain English: The nerve that supplies feeling to the roof of the mouth behind the front teeth — anesthetized by an injection near the back of the palate for procedures on upper back teeth.
Procedure · Intermediate · Core · student
Clinical: A regional anesthetic injection delivering local anesthetic at the greater palatine foramen (located approximately 1cm medial to the junction of the second and third maxillary molars) to anesthetize the hard palatal mucosa and gingiva from the third molar region to the canine.
Plain English: A palatal injection given near the back of the hard palate — it numbs the gum and palate tissue from the back molars to the canine area on one side.
Insurance · Basic · Nice-to-know · front-desk
Clinical: A formal complaint to a health plan about non-payment issues, service quality, or other concerns not limited to claim denials.
Plain English: A written complaint you send when you are unhappy with your plan or the service you received, not just about a single bill.
Orthodontics · Advanced · Core · student
Clinical: Orthodontic treatment in growing patients using functional or orthopedic appliances to redirect jaw growth, correct skeletal discrepancies, and reduce the need for future orthognathic surgery.
Plain English: Using special appliances during a child's growth period to guide how the jaws develop, ideally reducing or eliminating the need for jaw surgery later.
Orthodontics · Advanced · Core · student
Clinical: The use of orthodontic appliances during the growth period to influence the size, shape, or relationship of the jaw bones, redirecting or enhancing skeletal growth to correct or reduce a malocclusion; most effective during peak pubertal growth (CVM stages CS2–CS4).
Plain English: Using orthodontic appliances during childhood to guide how the jaw bones grow — taking advantage of growth to correct jaw size or position problems that would otherwise require surgery in adulthood.
Implant · Advanced · Core · student
Clinical: A surgical procedure using barrier membranes to exclude non-osteogenic cells from a bone defect while allowing osteogenic cells to repopulate and regenerate new bone; used to augment bone volume before or concurrent with implant placement.
Plain English: A procedure that uses a special membrane to create a protected space next to the bone so new bone can grow and fill in an area where there isn't enough to hold an implant.
Digital Dentistry · Advanced · Nice-to-know · student, lab
Clinical: A 3D-printed surgical drill guide fabricated from CBCT and digital planning data to accurately control implant placement depth, angle, and position.
Plain English: A custom-printed guide that helps the surgeon place implants in exactly the right position.
Procedure · Advanced · Nice-to-know · student, front-desk
Clinical: Periodontal regenerative technique using barrier membranes (and sometimes grafts) to direct growth of new bone and periodontal ligament in defects.
Plain English: Using special membranes and sometimes grafts to help bone and gum attachment regrow around a tooth.
Periodontics · Advanced · Core · student
Clinical: A periodontal regenerative procedure using barrier membranes (resorbable or non-resorbable) placed between the flap and the tooth root to exclude epithelium and connective tissue from the healing site, allowing periodontal ligament and alveolar bone cells to repopulate the defect.
Plain English: A surgical technique that uses a membrane barrier to guide the regrowth of the bone and ligament around a tooth damaged by gum disease.
Endodontics · Intermediate · Nice-to-know · student
Clinical: A thermoplastic rubber-like material derived from the Palaquium tree, used with sealer to obturate root canals following pulp removal.
Plain English: The rubbery material used to fill and seal the inside of your tooth after a root canal.
Lab Process · Intermediate · Core · student, lab
Clinical: Calcium sulfate-based materials used to fabricate study models, dies, and working casts; classified by strength: Type I (impression plaster), Type II (model plaster), Type III (lab stone), Type IV (die stone), Type V (high-strength die stone); strength increases with lower water-to-powder ratio.
Plain English: The plaster-like materials used in dental labs to pour up models from impressions — ranging from soft plaster for study models to very hard die stone that can withstand drilling and carving.
Pediatric · Intermediate · Core · student, lab, pediatric
Clinical: A fixed or removable intraoral device designed to discourage or eliminate oral habits such as thumb sucking or tongue thrusting that can cause or worsen dental and skeletal malocclusions.
Plain English: A device placed in the mouth to help stop habits like thumb sucking or tongue pushing that can affect how the teeth and jaw develop.
Pathology · Intermediate · Nice-to-know · student
Clinical: Benign condition in which filiform papillae on the dorsum of the tongue become elongated and may be stained by food, tobacco, or bacteria.
Plain English: A harmless condition where the top of the tongue looks hairy or dark because the tiny bumps have grown long and picked up stains.
Oral Medicine · Basic · Core · student, front-desk
Clinical: Persistent unpleasant mouth odor resulting from volatile sulfur compounds produced by oral bacteria, periodontal disease, or systemic conditions.
Plain English: Bad breath — often caused by bacteria in the mouth, gum disease, or certain health conditions.
Pediatric · Intermediate · Core · student, pediatric
Clinical: A minimally invasive approach to placing a stainless steel crown on a primary molar in which no caries removal or tooth preparation is performed; the crown is simply seated with glass ionomer cement, sealing bacteria from nutrients and halting decay progression.
Plain English: A way to place a silver crown on a baby tooth without drilling or numbing — the crown simply seals over the decay, cutting off the bacteria and stopping further damage.
Pediatric · Basic · Core · front-desk, pediatric
Clinical: Minimally invasive method for managing carious primary molars by sealing decay under a preformed metal crown without caries removal or local anesthesia.
Plain English: Placing a silver cap over a decayed baby tooth without drilling, to seal in the decay and stop it from growing.
Specialty · Basic · Core · student, front-desk
Clinical: The most critical infection control measure in dentistry; includes surgical hand scrub before invasive procedures and routine handwashing or alcohol-based hand rub (ABHR) between patients; gloves do not replace hand hygiene — hands must be cleaned before donning and after removing gloves.
Plain English: The single most important infection prevention step in dentistry — washing hands or using hand sanitizer before and after each patient contact; required even when wearing gloves.
Procedure · Basic · Nice-to-know · student
Clinical: A dental cutting instrument powered by compressed air or electric motor, available in high-speed (≥100,000 RPM, used for crown preparation and caries removal) and slow-speed (≤30,000 RPM, used for polishing and finishing) versions.
Plain English: The dental drill used to shape teeth, remove decay, or adjust restorations. In children's appointments sometimes called a 'whistle' to reduce anxiety.
Orthodontics · Basic · Core · student, lab
Clinical: A removable acrylic retainer with a stainless steel labial bow and Adams clasps that maintains post-orthodontic tooth position.
Plain English: A removable retainer with a wire across the front and a plastic piece that fits the roof of your mouth.
Orthodontics · Intermediate · Nice-to-know · student, lab
Clinical: An extra-oral appliance applying external forces to the maxilla or molars via a facebow to restrain maxillary growth or distalize molars.
Plain English: A device worn outside the mouth with straps around the head that helps guide jaw growth or move back teeth.
Orthodontics · Intermediate · Core · student
Clinical: An extraoral orthodontic appliance applying distal and intrusive forces to the maxillary molars via a facebow attached to molar tubes, with the outer bow attached to a cervical neck strap; used to restrain maxillary forward growth and/or distalize maxillary molars in growing Class II patients.
Plain English: An orthodontic appliance worn outside the mouth that uses a neck strap to apply backward force to the upper back teeth and jaw — used in growing patients to slow maxillary growth and pull the upper teeth back.
Implant · Basic · Core · student, lab
Clinical: A temporary cylindrical component placed on an implant after uncovering to shape and mature the peri-implant soft tissue prior to final impression taking; also called a gingival former; available in various heights and diameters.
Plain English: A temporary piece placed on the implant after it heals that shapes the gum tissue into a natural-looking contour before the final crown is made.
Lab Process · Intermediate · Core · lab
Clinical: A ceramic fabrication method in which a wax pattern is invested and replaced by pressable ceramic ingots under heat and pressure in a furnace.
Plain English: A method of making ceramic restorations by pressing heated ceramic material into a mold under controlled pressure.
Oral Surgery · Intermediate · Core · student
Clinical: The physiological process by which bleeding is stopped after injury, involving vasoconstriction, platelet plug formation, and coagulation cascade activation; the first stage of wound healing and a critical consideration in dental surgical planning for patients on anticoagulants.
Plain English: The body's ability to stop bleeding after a cut or surgery — it involves blood clotting and is something we must carefully manage in patients taking blood thinners.
Orthodontics · Advanced · Nice-to-know · student, lab
Clinical: A fixed functional appliance consisting of bilateral stainless steel telescoping rod-and-tube mechanisms that maintain a protruded mandibular position to correct Class II.
Plain English: A fixed device attached to your back teeth that holds your lower jaw in a forward position to correct an overbite.
Pathology · Intermediate · Nice-to-know · student
Clinical: Recurrent infection with herpes simplex virus type 1 affecting the vermilion border of the lips, producing vesicles that crust and heal.
Plain English: Cold sores or fever blisters that come back on the lips.
Oral Medicine · Intermediate · Core · student, pediatric
Clinical: The primary oral infection by herpes simplex virus type 1 (HSV-1), most commonly affecting children; presents with fever, malaise, cervical lymphadenopathy, and widespread painful vesicles and ulcers affecting both keratinized and non-keratinized oral mucosa; self-limiting in 10–14 days.
Plain English: The first herpes mouth infection — usually in young children — causing fever, swollen lymph nodes, and painful blisters throughout the mouth that heal on their own within two weeks.
Pediatric · Basic · Nice-to-know · front-desk, pediatric
Clinical: Air- or electric-driven dental drill used with burs to remove tooth structure or adjust restorations.
Plain English: The 'whistle' the dentist uses to clean out sugar bugs and shape the tooth.
Specialty · Basic · Core · student, front-desk
Clinical: A large-diameter suction device used to remove aerosols, spatter, blood, and saliva from the oral cavity during dental procedures; significantly reduces the number of airborne aerosol particles in the operatory, reducing cross-contamination risk; typically operated by the dental assistant.
Plain English: The high-power suction device used by the dental assistant during procedures — it removes most of the aerosol mist and spatter created by drills and water sprays, protecting the patient and staff.
Lab Process · Advanced · Nice-to-know · lab
Clinical: The imaginary axis around which the mandible rotates in the sagittal plane during pure hinge movement (terminal hinge movement), located through both condylar heads.
Plain English: The imaginary line around which your lower jaw rotates like a hinge, used as a reference point for bite analysis and lab work.
Specialty · Basic · Core · student, front-desk
Clinical: The Health Insurance Portability and Accountability Act (1996) includes the Privacy Rule and Security Rule governing Protected Health Information (PHI) in dental practices; requires safeguarding patient records, obtaining authorization before releasing PHI, and implementing physical, technical, and administrative safeguards for electronic PHI.
Plain English: The federal law governing patient privacy in dental offices — requiring secure handling of patient records, limiting who can see them, and ensuring patients' right to access their own records.
Insurance · Intermediate · Nice-to-know · front-desk
Clinical: A dental insurance model (also called DHMO or capitation plan) in which the insurance company pays the contracted dentist a fixed monthly fee per enrolled member regardless of services provided; patients must see their assigned dentist; co-pays are typically very low or nonexistent.
Plain English: A dental insurance plan where the dentist gets a fixed monthly payment per patient — patients must see their assigned dentist and usually pay very low fees at each visit.
Periodontics · Basic · Core · student, radiology
Clinical: A pattern of alveolar bone destruction in which bone resorption occurs parallel to an imaginary line connecting adjacent cementoenamel junctions, resulting in uniform crestal bone reduction across multiple teeth.
Plain English: An even pattern of bone loss where the bone drops at the same level across multiple teeth — the most common pattern in chronic gum disease.
Radiology · Intermediate · Nice-to-know · student, radiology
Clinical: An excessive deposition of cementum on the root surface beyond normal thickness, producing a club-shaped or bulbous root appearance on radiographs; usually localized and asymptomatic; may complicate tooth extraction or endodontic treatment.
Plain English: When too much cementum (the root's outer coating) builds up on a tooth's root, making it appear bulbous or club-shaped on X-rays — it can make extractions more difficult.
Oral Medicine · Intermediate · Core · student, front-desk
Clinical: High blood pressure requiring specific management considerations in the dental setting, including blood pressure screening before procedures, limiting epinephrine use in vasoconstrictors, avoiding epinephrine-impregnated retraction cord, and managing dental anxiety to prevent hypertensive crises.
Plain English: High blood pressure that requires careful management during dental treatment — including checking blood pressure before procedures and being careful with the amount of adrenaline in numbing medication.
Pathology · Intermediate · Core · student, front-desk
Clinical: The congenital absence of one to six teeth (excluding third molars); the most common dental developmental anomaly, most frequently affecting mandibular second premolars, maxillary lateral incisors, and maxillary second premolars.
Plain English: Being born missing one or more teeth — most often the second premolars or upper lateral incisors — which may require orthodontic treatment or implants.
Specialty · Basic · Core · student, front-desk
Clinical: A non-steroidal anti-inflammatory drug (NSAID) that inhibits COX-1 and COX-2 enzymes, reducing prostaglandin synthesis and thereby decreasing pain, inflammation, and fever; the most effective single-agent analgesic for dental pain; most commonly prescribed as 400–600mg every 6–8 hours.
Plain English: The most effective over-the-counter pain reliever for dental pain — it reduces both pain and inflammation at the source, making it more effective than acetaminophen alone for tooth pain.
Preventive · Intermediate · Core · student
Clinical: The International Caries Detection and Assessment System; a standardized scoring system for classifying caries severity on a scale from 0 (sound tooth surface) to 6 (extensive cavity with dentinal involvement visible), used in research and risk-based clinical practice.
Plain English: A standardized system for grading how severe a cavity is — from the very first white spot to a large hole through the tooth — used to decide whether to treat or monitor.
Oral Medicine · Advanced · Core · student
Clinical: A progressive resorption of the mandibular condyle without identifiable cause, leading to a Class II, anterior open bite malocclusion, and facial changes; predominantly affects young females; associated with orthognathic surgery, orthodontic treatment, bruxism, and hormonal factors.
Plain English: A condition where the jaw condyle slowly dissolves without a known reason — it causes the bite to progressively worsen, often developing an overbite and open bite.
Prosthodontics · Basic · Core · student, lab
Clinical: A complete or partial denture fabricated before teeth are extracted and inserted immediately after extraction.
Plain English: A denture made in advance and placed the same day your teeth are removed so you're never without teeth.
Implant · Advanced · Core · student
Clinical: Placement of a dental implant into a fresh extraction socket at the same appointment as tooth removal; reduces overall treatment time and may preserve natural bone and tissue contours if patient selection and socket anatomy are appropriate.
Plain English: Placing an implant into the socket right after a tooth is removed — it reduces the total number of surgeries and may preserve more of the natural gum and bone shape.
Implant · Advanced · Core · student, front-desk
Clinical: Restoration of a dental implant with a provisional or final prosthesis within 48 hours of implant placement, before osseointegration is complete; requires high primary stability (ISQ ≥70, insertion torque ≥35 Ncm) and protection from lateral forces.
Plain English: Attaching a temporary or permanent tooth to an implant within 48 hours of surgery — requires that the implant is very stable in the bone from the moment it's placed.
Oral Surgery · Basic · Core · student, front-desk
Clinical: A tooth that fails to erupt fully into its normal functional position because it is obstructed by bone, soft tissue, or adjacent teeth.
Plain English: A tooth that is stuck and cannot come in normally, often because there isn't enough room.
Procedure · Intermediate · Core · student, front-desk
Clinical: Attachment of an abutment to a dental implant to support a crown, bridge, or denture.
Plain English: Connecting a small piece to the implant so a crown or denture can be attached.
Implant · Intermediate · Core · student, lab
Clinical: A metal replica of the implant fixture used in the laboratory to replicate the implant's position and interface in a working cast; the impression coping is transferred to the impression, the analog is attached, and the cast is poured to create an accurate representation of the implant in the patient's mouth.
Plain English: A metal copy of the implant used in the dental lab — it's attached to the impression and buried in the plaster model so the technician can build the crown in exactly the right position.
Implant · Basic · Core · student, lab
Clinical: A prosthetic crown supported by a dental implant and abutment rather than a natural tooth root. May be screw-retained (through an occlusal access hole) or cement-retained onto a custom or prefabricated abutment.
Plain English: A permanent replacement tooth attached to a dental implant — it looks and functions like a natural tooth.
Implant · Intermediate · Core · student, front-desk
Clinical: A complete or partial removable denture that derives support and retention from two or more dental implants connected via attachments (ball, locator, bar); significantly improves retention and function over a conventional denture, especially in the mandible.
Plain English: A removable full denture that snaps onto dental implants for greatly improved stability and chewing ability compared to a denture that rests on the gums alone.
Radiology · Intermediate · Core · student, radiology
Clinical: A periapical radiograph taken of a dental implant to evaluate bone level at the implant-bone interface, assess screw position and restoration seating, and monitor for peri-implant bone loss over time; the reference radiograph at implant delivery is compared to all subsequent radiographs.
Plain English: An X-ray taken of a dental implant to check how the bone is holding up around it over time — compared to the baseline X-ray taken when the crown was first placed.
Procedure · Intermediate · Core · student, front-desk
Clinical: Surgical insertion of a biocompatible fixture into alveolar bone to support a dental prosthesis.
Plain English: Placing a metal post in the jawbone to support a replacement tooth.
Implant · Intermediate · Core · student, front-desk
Clinical: The surgical procedure in which a titanium or zirconia implant fixture is inserted into the prepared osteotomy site in the jaw; performed under local anesthesia; the implant may be placed in a healed site, immediately into an extraction socket (immediate placement), or in conjunction with bone grafting.
Plain English: The surgery to place a titanium post into the jawbone that will eventually support a crown — performed under local anesthetic, and followed by a healing period before the tooth is attached.
Implant · Basic · Core · student, front-desk
Clinical: The second surgical stage of a two-stage implant protocol in which the cover screw is removed and a healing abutment is placed after osseointegration is confirmed; allows the peri-implant soft tissue to mature around the abutment before the final impression.
Plain English: A minor second surgery to expose a submerged implant after it has healed — the protective cap is removed and a healing piece is placed so the gum grows into the right shape for the final crown.
Implant · Intermediate · Core · student, lab
Clinical: A precisely machined component that connects to the implant fixture or abutment and transfers the exact three-dimensional position of the implant to the working cast; available in pick-up (open tray) and transfer (closed tray) designs.
Plain English: A small device that fits on your implant and allows the dentist to take an exact impression of the implant's position so the lab can make a perfectly fitting crown.
Implant · Intermediate · Core · student, lab
Clinical: A precision-made component placed on an implant (or abutment) to transfer the implant's three-dimensional position to the impression material and then to the working cast; available in open-tray (pick-up) and closed-tray (transfer) designs.
Plain English: A small component attached to an implant before taking the impression — it transfers the exact position and angle of the implant to the model so the lab can build a perfectly fitting crown.
Materials · Basic · Core · student, lab
Clinical: Dental materials used to capture an accurate negative reproduction of teeth and soft tissues; classified as elastic (polyvinyl siloxane/PVS, polyether, alginate) or inelastic (plaster, ZOE paste); PVS is the gold standard for precision crown and bridge impressions.
Plain English: The material used to make a 3D mold of the teeth — ranging from the soft rubbery material for precise crown impressions to the faster alginate used for study models.
Insurance · Basic · Core · student, front-desk
Clinical: A dental provider who has signed a contract with a dental insurance plan to accept the plan's fee schedule as full payment for covered services; patients receive higher benefit levels when using in-network providers.
Plain English: A dentist who has agreed to accept your insurance company's set fees — using an in-network dentist usually means lower out-of-pocket costs for you.
Anatomy · Basic · Core · student, lab
Clinical: The biting edge of anterior teeth (incisors and canines), formed by the junction of the labial and lingual surfaces.
Plain English: The cutting edge of your front teeth.
Anatomy · Basic · Core · student, front-desk
Clinical: One of the four front teeth in each arch (maxillary and mandibular central and lateral incisors) designed for cutting food.
Plain English: Your four front teeth, which are used for cutting food.
Lab Process · Intermediate · Nice-to-know · lab
Clinical: Creating a registration or reference guide (often in putty or stone) that records the exact position of teeth or components so they can be accurately repositioned after modification.
Plain English: Making a reference mold to keep track of exact tooth positions during lab work.
Orthodontics · Intermediate · Nice-to-know · student, lab
Clinical: A bracket placement technique where brackets are positioned on a laboratory model and transferred to the patient's teeth using a custom tray.
Plain English: A method where braces are set up precisely on a model first, then transferred all at once to your teeth.
Endodontics · Advanced · Core · student
Clinical: A minimally invasive endodontic technique in which caries is selectively removed, leaving a thin layer of affected but remineralizable dentin over the pulp to avoid exposure, followed by a biocompatible liner and sealed restoration to promote remineralization.
Plain English: A technique for treating a deep cavity close to the nerve — deliberately leaving a thin layer of softened dentin over the nerve and sealing it, allowing the tooth to heal from the inside rather than risking nerve exposure.
Procedure · Intermediate · Nice-to-know · student, front-desk
Clinical: Bonding or luting of an inlay, onlay, crown, or bridge onto prepared tooth structure using dental cement or adhesive resin.
Plain English: Cementing a lab-made piece like a crown or inlay onto the tooth.
Lesion Descriptor · Basic · Nice-to-know · student
Clinical: Abnormal hardening of tissue detected by palpation, often associated with chronic inflammation or malignancy.
Plain English: An area that feels unusually firm or hard when you press on it.
Anatomy · Intermediate · Core · student, radiology
Clinical: A branch of the maxillary artery (from the external carotid) that accompanies the inferior alveolar nerve through the mandibular canal; supplies blood to the mandibular teeth, bone, and periodontium; damage during implant placement or surgery can cause significant hemorrhage.
Plain English: The blood vessel that runs alongside the lower jaw nerve inside the jawbone — hitting it during surgery or implant placement can cause serious bleeding.
Anatomy · Intermediate · Core · student, radiology
Clinical: A branch of the posterior division of the mandibular nerve (V3) that enters the mandibular foramen on the medial surface of the mandibular ramus, passes through the mandibular canal, and innervates the mandibular teeth, periodontium, and bone; exits as the mental nerve at the mental foramen to supply the lower lip and chin.
Plain English: The main sensory nerve of the lower jaw — it enters a canal inside the jawbone and supplies all the lower teeth and the lower lip; the target of the inferior alveolar nerve block injection.
Anatomy · Intermediate · Core · student
Clinical: A branch of the mandibular division (V3) of the trigeminal nerve (CN V) that enters the mandibular foramen and travels through the mandibular canal, supplying sensation to the mandibular posterior teeth, premolars, and (via the mental nerve) the anterior teeth, lower lip, and chin.
Plain English: The main nerve that carries feeling from the lower teeth and lower lip — the target of the inferior alveolar nerve block (the most common dental injection).
Specialty · Basic · Core · student
Clinical: The most common dental nerve block technique, anesthetizing the inferior alveolar nerve at the mandibular foramen to provide pulpal anesthesia for all mandibular teeth on the injected side, plus lingual soft tissues; requires a separate buccal (long buccal) nerve block for buccal soft tissue of posterior teeth.
Plain English: The injection that numbs the entire lower half of the mouth on one side — targeting the main lower jaw nerve as it enters the bone; the most commonly given dental injection.
Procedure · Intermediate · Core · student
Clinical: A regional anesthetic injection technique delivering local anesthetic adjacent to the inferior alveolar nerve as it enters the mandibular foramen; anesthetizes the mandibular teeth, buccal gingiva (anterior), bone, and lower lip on the injected side; most commonly used injection in dentistry.
Plain English: The injection that numbs the entire lower jaw on one side — placing anesthetic near the nerve as it enters the jawbone, causing numbness of all the lower teeth and the lip on that side.
Specialty · Basic · Core · student
Clinical: A local anesthetic technique in which the solution is deposited near the apex of the tooth (supraperiosteal injection) to diffuse through the cortical bone and anesthetize the terminal nerve fibers; effective in the maxilla and, with articaine, increasingly used in the mandible.
Plain English: A numbing injection given near the tip of a tooth's root — the medication soaks through the thin bone to numb the nerve; works easily in the upper jaw and is often effective in the lower jaw with articaine.
Specialty · Basic · Core · student, front-desk
Clinical: The ethical and legal process by which a patient is provided with sufficient information about a proposed treatment — including benefits, risks, alternatives, and the option to decline — to make a voluntary and informed decision about their care.
Plain English: The process of fully explaining a treatment to a patient — including the risks, benefits, and alternatives — and getting their agreement before proceeding.
Specialty · Basic · Core · student, front-desk
Clinical: The legal and ethical process through which a patient is provided with sufficient information about a proposed dental procedure — including its purpose, risks, benefits, and alternatives — and voluntarily agrees to or declines treatment; must be documented in the patient record; capacity must be assessed.
Plain English: The process of fully explaining a dental procedure, its risks, benefits, and alternatives to a patient who then freely agrees to or declines the treatment — legally required and must be documented.
Prosthodontics · Intermediate · Nice-to-know · student, lab
Clinical: An indirect restoration fabricated outside the mouth that fits within the confines of the tooth cusps, covering only the interproximal and occlusal surfaces without cusp coverage.
Plain English: A custom-made filling made in a dental lab that fits precisely inside your tooth.
Procedure · Intermediate · Core · student, lab
Clinical: A laboratory-fabricated intracoronal restoration placed within the cusps of a posterior tooth without extending over any cusps; provides superior strength, marginal adaptation, and esthetics compared to direct restorations in large Class I and II cavities; fabricated from ceramic, gold, or composite.
Plain English: A custom-made filling fabricated in the lab and cemented into a prepared cavity — stronger and more precise than a direct filling, and used when the cavity is too large for a regular filling.
Orthodontics · Intermediate · Core · student, front-desk, pediatric
Clinical: Orthodontic treatment performed during the mixed dentition (ages 6–12) to correct or reduce developing malocclusions, including habits, crossbites, excess overjet, and crowding, minimizing the complexity of future comprehensive treatment.
Plain English: Braces or appliance treatment started during childhood (while baby and adult teeth coexist) to guide jaw development and prevent bite problems from getting worse.
Anatomy · Basic · Core · student
Clinical: The triangular-shaped soft tissue filling the interproximal space between adjacent teeth below the contact point; also called the dental papilla.
Plain English: The pointed gum tissue that fills the space between two teeth — the little triangle of gum visible between your teeth.
Insurance · Intermediate · Nice-to-know · front-desk
Clinical: The plan's own review process in which it reconsiders a denial or adverse determination, often based on additional information submitted by the member or provider.
Plain English: The first step where your insurance company reviews its own decision after you send an appeal.
Endodontics · Advanced · Core · student, radiology
Clinical: An idiopathic, progressive resorptive process originating from within the root canal space, caused by clastic cells in inflamed pulp tissue that destroy the surrounding dentin; appears as a rounded or oval radiolucent expansion of the canal on radiographs.
Plain English: When the tooth eats itself from the inside — cells in the inflamed nerve tissue dissolve the inner dentin of the tooth, visible on X-rays as a balloon-like widening in the tooth's canal.
Lab Process · Intermediate · Core · student, lab
Clinical: The area of contact between adjacent teeth at the proximal surfaces; ideally located at the junction of the middle and occlusal thirds (posterior teeth) or middle third (anterior teeth); contact tightness is assessed clinically with floss and radiographically; a key quality criterion for any restoration.
Plain English: The contact point between two neighboring teeth — its location and tightness are critical for a properly made crown; too loose and food gets stuck, too tight and the crown won't seat.
Orthodontics · Intermediate · Core · student
Clinical: The controlled removal of small amounts of enamel from the interproximal (contact) surfaces of adjacent teeth using fine diamond strips, discs, or burs to create space for tooth alignment without tooth extractions; also called air rotor stripping (ARS) or slenderizing.
Plain English: Carefully shaving tiny amounts of enamel from between adjacent teeth to create space for alignment — an alternative to extracting teeth in cases with mild to moderate crowding.
Digital Dentistry · Basic · Core · student, front-desk
Clinical: A small, pen-sized digital camera used chairside to capture high-resolution still images and video of the oral cavity; allows patients to visualize caries, cracked teeth, defective restorations, and periodontal conditions in real time, improving communication and case acceptance.
Plain English: A small camera on a pen-like wand used in the dental chair to show patients high-resolution images of their own teeth — helping them understand what the dentist sees and making treatment decisions easier.
Specialty · Advanced · Core · student
Clinical: A supplemental local anesthetic technique in which a small perforation is made through the cortical bone with a specialized drill and the anesthetic is deposited directly into the cancellous bone adjacent to the tooth apex; provides immediate, profound pulpal anesthesia.
Plain English: A supplemental numbing technique where a tiny hole is drilled through the outer jawbone and anesthetic is injected directly into the spongy bone — it numbs a tooth almost instantly, even when other injections have failed.
Orthodontics · Advanced · Core · student
Clinical: An orthodontic tooth movement that moves a tooth apically (deeper into the bone), reducing its clinical crown height; used to correct deep bites or over-erupted teeth.
Plain English: Moving a tooth upward into the bone to reduce how far it sticks down or up, often used to fix a deep bite.
Lab Process · Intermediate · Core · lab
Clinical: The process of encasing a wax pattern in a heat-resistant investment material prior to casting or heat-pressing.
Plain English: Surrounding a wax tooth pattern in a special heat-proof material before melting it out to cast or press the restoration.
Lab Process · Advanced · Nice-to-know · student, lab
Clinical: A refractory material used to encase a wax pattern before casting; must withstand the high temperature of molten metal while providing controlled expansion to compensate for metal shrinkage upon cooling; phosphate-bonded investments are most common for high-fusing alloys; gypsum-bonded for gold alloys.
Plain English: The plaster-like material poured around a wax pattern before metal casting — it must handle extreme heat and expands slightly to compensate for the metal shrinking as it cools.
Digital Dentistry · Basic · Nice-to-know · student, lab
Clinical: A handheld optical device that captures 3D digital impressions of teeth and soft tissues using structured light or confocal imaging.
Plain English: A small wand your dentist uses to scan your teeth digitally instead of taking traditional impressions.
Materials · Intermediate · Core · student, lab
Clinical: A high-strength glass-ceramic material (Ivoclar Vivadent) available in pressed (IPS e.max Press) and CAD-milled (IPS e.max CAD) forms; lithium disilicate crystals embedded in glass matrix provide flexural strength of ~360–500 MPa; the leading material for anterior and premolar all-ceramic crowns and veneers.
Plain English: The most popular high-strength ceramic material for tooth-colored crowns and veneers — available pressed or milled by computer; it combines excellent strength with natural-looking translucency.
Implant · Advanced · Core · student
Clinical: A non-invasive measure of implant stability determined by resonance frequency analysis (RFA) using a small transducer (Osstell SmartPeg) attached to the implant; values range from 1–100, with ISQ ≥70 generally indicating sufficient stability for loading.
Plain English: A number from 1–100 that measures how stable an implant is in the bone — measured with a small vibration device; a high score means the implant is ready to be loaded with a crown.
Specialty · Advanced · Core · student, front-desk
Clinical: Moderate or deep sedation administered intravenously in the dental operatory by a qualified sedation provider; commonly uses combinations of benzodiazepines (midazolam), opioids (fentanyl), and propofol; allows treatment of anxious or complex patients with greater depth of sedation than oral or nitrous oxide.
Plain English: Sedation given through an IV line in the dental office — the patient is deeply relaxed or unresponsive but breathing on their own, allowing longer and more complex procedures to be completed comfortably.
Lab Process · Intermediate · Core · student, lab
Clinical: The use of standardized intraoral and extraoral clinical photographs sent to the dental laboratory alongside the prescription and impression/scan to communicate shade nuances, tooth characterizations, tissue contours, and patient facial proportions that cannot be captured in a shade tab or written instructions.
Plain English: Clinical photographs sent to the dental lab with the case — they show the lab technician the exact shade variations, surface texture, and facial proportions of the patient's natural teeth that no shade guide can fully convey.
Lab Process · Basic · Core · lab
Clinical: The written or digital work order submitted by a clinician to a dental laboratory specifying the restoration type, materials, shade, occlusal scheme, patient information, and delivery date; legally required in most jurisdictions.
Plain English: The written instructions a dentist sends to the lab telling us exactly what to make for your tooth — material, color, size, and deadline.
Anatomy · Basic · Core · student, front-desk
Clinical: A fold of mucous membrane attaching the midline of the upper or lower lip to the alveolar mucosa; a prominent maxillary labial frenum can cause a midline diastema between the upper central incisors or compromise denture retention.
Plain English: The thin band of tissue connecting your upper or lower lip to your gum — when it's too thick or attached too low, it can cause a gap between the front teeth or affect how a denture fits.
Anatomy · Basic · Core · student, lab
Clinical: The surface of an anterior tooth facing the lips; also called the facial surface.
Plain English: The lip-facing side of your front teeth.
Radiology · Intermediate · Core · student, radiology
Clinical: A thin radiopaque line surrounding the root of each tooth on periapical radiographs, representing the dense cortical bone lining the alveolar socket; its integrity and continuity are important diagnostic indicators of periodontal and periapical health.
Plain English: The white line seen around the root of a tooth on X-rays — it represents the thin layer of dense bone lining the tooth socket; when this line is broken or thickened, it signals disease.
Orthodontics · Intermediate · Nice-to-know · student, lab
Clinical: Movement of the mandible to the left or right of the centric position.
Plain English: When your lower jaw moves to one side — tested by having you slide your teeth sideways.
Orthodontics · Intermediate · Core · student, lab
Clinical: Movement of the mandible to the left or right of centric occlusion; on the working side, the teeth may be guided by the canine alone (canine guidance) or by a group of posterior teeth (group function); the balancing side should have no contact.
Plain English: The side movement of the lower jaw — how the teeth interact when the jaw moves sideways, which affects both function and wear on the teeth.
Digital Dentistry · Intermediate · Core · lab
Clinical: A ceramic restoration built up in multiple layers of differently shaded and translucent materials to mimic natural tooth optical properties, as opposed to a monolithic design.
Plain English: A dental restoration made in layers of different materials to match the look and shine of a natural tooth.
Lab Process · Intermediate · Core · student, lab
Clinical: A ceramic restoration in which a high-strength core (zirconia or lithium disilicate) is veneered with layers of more esthetic, translucent feldspathic porcelain; provides superior esthetics over monolithic restorations at the cost of higher chipping risk.
Plain English: A crown made from a strong inner core with layers of more translucent, tooth-like porcelain built up on the outside for maximum esthetic realism.
Insurance · Intermediate · Core · student, front-desk
Clinical: An insurance provision that limits payment to the cost of the least expensive clinically acceptable treatment, even if the dentist recommends a more complex or esthetic option.
Plain English: An insurance rule that pays only for the cheapest version of a treatment — for example, paying for a silver filling even when you choose a tooth-colored one.
Endodontics · Advanced · Nice-to-know · student
Clinical: An iatrogenic irregularity or step created in the root canal wall during instrumentation, preventing files from reaching the working length; caused by improper technique or failure to pre-curve files before instrumentation of curved canals.
Plain English: An accidental bump or step created inside a root canal when the instrument slips off the curved path — it can make the canal harder or impossible to fully clean.
Materials · Advanced · Nice-to-know · student, lab
Clinical: A glass ceramic reinforced with leucite crystals that improve fracture toughness compared to conventional feldspathic porcelain; commonly used in pressed ceramic restorations for single-unit anterior and premolar crowns and veneers.
Plain English: A stronger version of tooth-colored porcelain reinforced with tiny crystals — used for pressed ceramic crowns and veneers that need more durability than traditional porcelain.
Pathology · Intermediate · Nice-to-know · student
Clinical: White patch or plaque of the oral mucosa that cannot be scraped off and cannot be characterized clinically or histologically as any other disease; some lesions show dysplasia.
Plain English: A persistent white patch in the mouth that does not wipe off and needs checking because some can be precancerous.
Orthodontics · Basic · Core · student
Clinical: The first phase of comprehensive orthodontic treatment focused on eliminating rotations, correcting arch form, and leveling the curve of Spee using light, flexible initial archwires before space closure or detailing begins.
Plain English: The first stage of braces treatment where the teeth are straightened out and put into line before any gaps are closed or fine-tuning begins.
Oral Medicine · Advanced · Core · student
Clinical: A chronic immune-mediated mucosal condition presenting as white reticular (lace-like) striae, erosions, or ulcers on the buccal mucosa, tongue, or gingiva; the erosive form causes significant pain and has a small malignant transformation risk.
Plain English: A chronic condition causing white lacy patches or painful sores inside the mouth — it's caused by the immune system and is not contagious.
Specialty · Intermediate · Core · student, front-desk
Clinical: The most widely used amide local anesthetic in dentistry; available as 2% lidocaine with 1:100,000 or 1:50,000 epinephrine; onset 2–3 minutes, pulpal duration 60 minutes with vasoconstrictor; the gold standard against which all other dental local anesthetics are compared.
Plain English: The most common numbing medicine used in dentistry — the 'caine' in most dental injections — works quickly and lasts about an hour for tooth procedures.
Orthodontics · Basic · Core · student
Clinical: A tie — elastic O-ring or thin stainless steel wire — used to secure the archwire into the bracket slot.
Plain English: The small elastic or wire tie that holds the wire into each bracket on your braces.
Pathology · Intermediate · Nice-to-know · student
Clinical: White horizontal line along the buccal mucosa at the level of the occlusal plane, associated with frictional irritation.
Plain English: A white line on the inside of the cheek where the teeth meet, usually from rubbing or sucking on the cheek.
Materials · Intermediate · Core · student
Clinical: A thin layer of material applied to the deepest part of a cavity preparation close to the pulp to provide thermal insulation, protect against chemical irritation from the restorative material, and in some cases (calcium hydroxide, MTA) stimulate reparative dentin formation.
Plain English: A protective layer placed on the deepest part of a prepared cavity — it shields the nerve from heat, chemicals, and stimulates the tooth to form a protective dentin barrier.
Orthodontics · Intermediate · Nice-to-know · student, lab
Clinical: A fixed appliance connecting bilateral molar bands via a contoured wire running along the lingual surface to maintain arch width or provide anchorage.
Plain English: A wire appliance on the inside of your teeth connecting the back teeth to hold your arch shape.
Anatomy · Intermediate · Core · student
Clinical: A branch of the posterior division of the mandibular nerve (V3) descending medial to the mandibular ramus, providing sensory innervation to the anterior two-thirds of the tongue, floor of the mouth, and lingual gingiva of the mandible; carries taste fibers from the chorda tympani.
Plain English: The sensory nerve supplying the tongue and floor of the mouth — anesthetized along with the inferior alveolar nerve during a lower jaw injection; vulnerable to injury during wisdom tooth removal.
Anatomy · Basic · Core · student, lab, front-desk
Clinical: The surface of a mandibular tooth facing the tongue.
Plain English: The tongue-side of your lower teeth.
Orthodontics · Intermediate · Nice-to-know · student, lab
Clinical: A removable orthodontic appliance consisting of a wire with an acrylic or plastic pad that rests against the lips or cheeks, transmitting muscle pressure away from the teeth to tip molars distally and gain arch length without extractions.
Plain English: A removable device that holds the lip away from the lower front teeth, using natural lip pressure to push the back teeth backward and create more space for crowded teeth.
Procedure · Basic · Core · student, front-desk
Clinical: The reversible loss of sensation in a localized area of the body achieved by injecting an anesthetic agent near nerve trunks or terminal nerve endings; the foundation of pain control in dentistry.
Plain English: A numbing injection that temporarily blocks pain in a specific area of your mouth.
Pediatric · Basic · Nice-to-know · front-desk, pediatric
Clinical: Injection of anesthetic solution near nerves to temporarily block sensation during dental treatment.
Plain English: Medicine that makes the tooth go to 'sleep' so it does not feel what the dentist is doing.
Specialty · Intermediate · Core · student, front-desk
Clinical: A true IgE-mediated hypersensitivity reaction to a local anesthetic; extremely rare (<1% of reported reactions); most adverse reactions to dental anesthetics are vasovagal syncope, psychogenic, or due to epinephrine effects (palpitations, tremor) rather than true allergy; ester anesthetics (benzocaine) are more allergenic than amides.
Plain English: A true allergic reaction to dental numbing medicine — very rare; most reactions patients call 'allergies' are actually anxiety responses, a racing heart from the epinephrine, or fainting.
Periodontics · Intermediate · Nice-to-know · student
Clinical: Antimicrobial agents in a slow-release formulation (gel, fiber, or chip) placed directly into a periodontal pocket as an adjunct to scaling and root planing to reduce the bacterial load at the site; common agents include minocycline and doxycycline.
Plain English: A small amount of antibiotic placed directly into a gum pocket after deep cleaning — it slowly releases medication to fight bacteria right where the infection is.
Implant · Basic · Core · student, lab, front-desk
Clinical: A patented low-profile implant overdenture attachment system consisting of a titanium abutment with a nylon retentive insert in the denture; widely used for mandibular two-implant overdentures due to its tolerance for implant divergence (up to 40°).
Plain English: A snap-in connector used to attach a removable implant denture — it uses a small rubber insert in the denture that clicks onto small posts on the implants.
Lab Process · Intermediate · Core · student, lab
Clinical: The traditional method of casting metal dental restorations (crowns, partial denture frameworks) in which a wax pattern is invested in a gypsum or phosphate-bonded investment material, the wax is burned out (lost) in a burnout oven, and molten metal is cast into the resulting void.
Plain English: The classic metal casting process used in dental labs — a wax model of the restoration is buried in investment material, burned out, and replaced with molten metal that fills the exact space left behind.
Lab Process · Advanced · Core · student, lab
Clinical: The traditional indirect dental restoration fabrication method in which a wax pattern of the restoration is invested in a refractory material, the wax is eliminated by heat, and molten metal alloy is cast into the resulting cavity using centrifugal or vacuum-pressure casting machines; used for metal crowns, partial denture frameworks, and metal-ceramic restorations.
Plain English: The traditional way of making metal dental restorations — carving the shape in wax, encasing it in plaster-like material, melting the wax away, and casting molten metal into the empty space.
Lesion Descriptor · Basic · Nice-to-know · student
Clinical: Circumscribed flat area of altered color of the mucosa or skin without elevation or depression relative to surrounding tissue.
Plain English: A flat spot in the mouth that looks different in color from the surrounding tissue but is not raised or sunken.
Oral Medicine · Basic · Core · student, front-desk
Clinical: Describing a neoplasm with the ability to invade surrounding tissue and metastasize to distant sites; indicative of cancer.
Plain English: Cancerous — a condition that can spread to other areas of the body.
Orthodontics · Intermediate · Nice-to-know · student, lab
Clinical: Any deviation from the ideal occlusal relationship between the upper and lower dentitions, classified by Angle's system (Class I, II, III).
Plain English: When your teeth don't fit together correctly — they may be crowded, spaced, or the jaws may not align.
Anatomy · Intermediate · Core · student
Clinical: The rounded posterior projection of the mandibular ramus that articulates with the temporal bone at the temporomandibular joint; convex in shape; covered with fibrocartilage; serves as a growth center in children — condylar fractures in children can cause mandibular growth disturbance.
Plain English: The rounded end of the lower jawbone that forms the hinge of the jaw joint — it moves forward and rotates during mouth opening, and is a key site of jaw growth in children.
Pathology · Intermediate · Nice-to-know · student
Clinical: Bony exostoses located on the lingual aspect of the mandible in the premolar region, often bilateral and benign.
Plain English: Extra bone bumps on the inside of the lower jaw, often on both sides.
Procedure · Intermediate · Core · student, lab
Clinical: The junction between the edge of a dental restoration or crown and the prepared tooth structure; also called the finish line.
Plain English: The edge where a crown or filling meets your tooth.
Lab Process · Intermediate · Core · student, lab
Clinical: The accuracy of fit at the margin (edge) of a restoration where it meets the prepared tooth structure; the gold standard is a margin gap of <100 microns; poor marginal fit allows microleakage, secondary caries, and periodontal inflammation.
Plain English: How accurately a crown or filling fits at the edge where it meets the tooth — a gap or step at this margin allows bacteria to get underneath, leading to new cavities and gum irritation.
Orthodontics · Advanced · Core · student
Clinical: A palatal expansion technique using TADs (mini-screws) anchored directly into the palatal bone to apply expansion forces, bypassing tooth-borne anchorage; allows effective skeletal expansion in late adolescents and young adults whose sutures are partially or fully fused.
Plain English: A newer expansion technique that uses tiny screws anchored into the bone of the palate — it can widen the upper jaw in teenagers and adults who are too old for traditional expanders.
Prosthodontics · Intermediate · Core · student, lab
Clinical: A minimally invasive fixed partial denture using metal or ceramic wings bonded to the lingual surfaces of adjacent teeth without full crown preparation.
Plain English: A conservative tooth replacement glued to the backs of neighboring teeth — no crowns needed.
Anatomy · Basic · Core · student
Clinical: The primary muscle of mastication arising from the zygomatic arch and inserting into the lateral surface of the mandibular ramus and angle; produces powerful jaw closing force; hypertrophy (masseter hypertrophy) from bruxism results in a squared facial appearance.
Plain English: The powerful jaw-closing muscle that runs from the cheekbone to the lower jaw — you can feel it bulge when you clench your teeth; it can enlarge significantly in people who grind their teeth.
Lab Process · Basic · Core · student, lab
Clinical: The definitive stone or resin model poured from the final impression used by the laboratory for fabrication of the definitive restoration; must accurately represent the prepared tooth and surrounding tissues.
Plain English: The precise model of your teeth made from the final impression that the lab uses to build your crown, bridge, or denture.
Procedure · Basic · Core · student
Clinical: A thin metal or plastic band placed around a tooth to temporarily recreate the missing proximal wall of a tooth during restoration of a Class II cavity, allowing the restorative material to be condensed or light-cured into the correct anatomical contour and contact.
Plain English: A thin metal band wrapped around a tooth while placing a filling — it acts as a temporary wall so the filling material can be shaped into a proper tight contact with the neighboring tooth.
Anatomy · Intermediate · Core · student, radiology
Clinical: The largest of the paranasal sinuses, located within the body of the maxilla lateral to the nasal cavity; lined with Schneiderian membrane (ciliated pseudostratified columnar epithelium); the roots of the maxillary posterior teeth often project into or near its floor.
Plain English: The largest air-filled cavity inside the upper jaw — its floor sits close to the roots of the upper back teeth, which is why sinus infections can cause tooth-like pain and why implants in this area may require a sinus lift.
Anatomy · Intermediate · Core · student, radiology
Clinical: The largest of the paranasal sinuses, located within the maxilla bilaterally; its floor is closely related to the roots of the maxillary posterior teeth (first/second molar roots often project into the sinus); dental relevance: sinus lift procedures, sinus communication after extraction, periapical infections can cause sinusitis.
Plain English: The air space inside the upper cheekbone — closely related to the upper back tooth roots, so implants in this area often require a sinus lift procedure to create enough bone height.
Anatomy · Basic · Nice-to-know · student, lab
Clinical: The rounded bony prominence at the posterior end of the maxillary alveolar ridge behind the last upper molar; serves as an attachment site for pterygoid muscles and is a landmark in impression making and surgical planning.
Plain English: The rounded bump of bone behind your upper back teeth — an important area for dentists when taking impressions or planning extractions and surgery.
Insurance · Intermediate · Core · front-desk
Clinical: The highest fee a dental benefit plan will recognize for a covered service; the patient is responsible for any difference between the dentist's actual fee and the maximum allowable charge.
Plain English: The most your insurance plan will pay for a specific procedure — amounts above that are your responsibility.
Orthodontics · Intermediate · Core · student, lab
Clinical: The complete interdigitation of the teeth of the opposing arches providing the maximum contact between the cusps; equivalent to centric occlusion in most patients.
Plain English: The position where your upper and lower teeth fit together with the most contact.
Specialty · Basic · Core · student, front-desk
Clinical: A comprehensive record of a patient's past and present medical conditions, medications, allergies, hospitalizations, and family health history collected before dental treatment to identify contraindications, drug interactions, and conditions affecting dental care.
Plain English: A health questionnaire completed before dental treatment asking about your medical conditions, medications, and allergies — essential for providing safe and appropriate care.
Anatomy · Basic · Core · student, radiology
Clinical: A bilateral opening on the anterior lateral surface of the mandibular body through which the mental nerve and vessels exit; typically located below and between the roots of the mandibular first and second premolars; a key radiographic and surgical landmark.
Plain English: A small natural opening in the lower jawbone near the premolars — the mental nerve and blood vessels pass through it, and it must be identified on X-rays before implant surgery in that area.
Anatomy · Intermediate · Core · student, radiology
Clinical: The terminal sensory branch of the inferior alveolar nerve that exits the mandible through the mental foramen (typically between the apices of the mandibular premolars) to supply sensation to the lower lip, chin, and labial gingiva of the anterior mandible.
Plain English: The nerve that exits a small hole in the lower jaw near the premolars — it supplies feeling to the lower lip and chin; anesthetized by the mental nerve block injection.
Specialty · Intermediate · Core · student
Clinical: An amide local anesthetic available as 3% plain (without vasoconstrictor) or 2% with 1:20,000 levonordefrin; the plain formulation is preferred for patients in whom vasoconstrictors are contraindicated; shorter duration of soft tissue anesthesia than lidocaine with epinephrine.
Plain English: A numbing medicine that works without the addition of epinephrine — useful for patients with heart conditions or other reasons to avoid adrenaline in their anesthetic.
Specialty · Intermediate · Core · student, front-desk
Clinical: The occupational and environmental safety measures required when handling dental amalgam; includes proper ventilation of the operatory, use of high-volume evacuation, amalgam separators on vacuum lines, proper storage of amalgam waste, and patient and staff exposure management.
Plain English: The safety procedures for handling silver fillings — proper suction, ventilation, and disposal to minimize mercury vapor exposure for both dental staff and patients.
Anatomy · Basic · Core · student, lab, front-desk
Clinical: The proximal surface of a tooth facing toward the midline of the dental arch.
Plain English: The side of a tooth that faces the center of your mouth.
Specialty · Intermediate · Core · student
Clinical: A nitroimidazole antibiotic and antiprotozoal effective against anaerobic bacteria; used in dentistry for aggressive/refractory periodontitis (often combined with amoxicillin per Socransky protocol), necrotizing ulcerative gingivitis, and deep-space dental infections with anaerobic component.
Plain English: An antibiotic effective specifically against the anaerobic bacteria that thrive in deep periodontal pockets and serious dental infections — often used alongside amoxicillin for severe gum disease.
Orthodontics · Basic · Nice-to-know · student
Clinical: Displacement of the dental or facial midline from the true midline, measured in millimeters; may be dental or skeletal in origin.
Plain English: When the center line between your two front teeth doesn't line up with the center of your face.
Digital Dentistry · Intermediate · Core · lab
Clinical: A subtractive manufacturing process in which a dental restoration is machined from a solid block of material (e.g., zirconia, PMMA, e.max) using computer-guided burs.
Plain English: A process where a machine carves your dental restoration out of a solid block of material using computer guidance.
Insurance · Basic · Core · front-desk
Clinical: An insurance policy exclusion that denies benefits for the replacement of teeth that were missing before the patient's current coverage began, regardless of whether the patient now needs a bridge, denture, or implant.
Plain English: An insurance rule that won't pay to replace a tooth that was already missing when the patient got their current insurance policy — even if they need an implant or bridge now.
Pediatric · Basic · Nice-to-know · front-desk, pediatric
Clinical: Stage in which both primary and permanent teeth are present in the mouth, typically between about 6 and 12 years of age.
Plain English: The time when kids have a mix of baby teeth and grown-up teeth.
Lesion Descriptor · Basic · Nice-to-know · student, radiology
Clinical: Radiographic pattern containing both radiolucent and radiopaque areas within the same lesion.
Plain English: An x-ray appearance that has both lighter and darker areas in one lesion.
Procedure · Basic · Core · student, front-desk
Clinical: A reversible, non-invasive trial of a proposed restorative design in which composite resin or bis-acryl is placed directly over the patient's unprepared teeth using a matrix from the diagnostic wax-up; allows the patient to preview and approve shape, length, and proportion before preparation.
Plain English: A trial run of your new smile made with temporary material placed directly on your teeth — it lets you see and feel the final shape without any drilling, and it washes off completely.
Anatomy · Basic · Core · student, front-desk, pediatric
Clinical: The large posterior grinding teeth at the back of the arch with multiple cusps; includes first, second, and third molars.
Plain English: Your large back teeth used for grinding and chewing food.
Orthodontics · Advanced · Core · student, lab
Clinical: Distal movement of the maxillary molars to create space for dental arch alignment or to correct a Class II molar relationship without extractions; achieved using intraoral distalization appliances, extraoral headgear, or TADs.
Plain English: Moving the upper back teeth backward to create space in the arch or correct a bite problem — an alternative to removing teeth in certain patients.
Orthodontics · Advanced · Core · student, lab
Clinical: An orthodontic procedure to correct the mesial tipping of a mandibular molar into an extraction space, restoring its vertical axial inclination before implant placement or bridge preparation to improve the prosthetic outcome.
Plain English: Straightening up a back tooth that has tilted forward into a gap — usually done to prepare the space for an implant or bridge.
Pathology · Intermediate · Core · student, pediatric
Clinical: A qualitative developmental enamel defect affecting one to all four first permanent molars, often with involvement of the permanent incisors; the affected enamel is poorly mineralized and breaks down rapidly, causing sensitivity, caries susceptibility, and management challenges.
Plain English: A condition where the first permanent molars (and sometimes incisors) develop with soft, chalky enamel that breaks down easily — causing sensitivity, cavities, and very difficult restorative management.
Orthodontics · Advanced · Nice-to-know · student
Clinical: The tendency of a force to produce rotation of a tooth; calculated as force magnitude multiplied by the perpendicular distance from the center of resistance; the ratio of moment to force (M/F ratio) determines the type of tooth movement produced.
Plain English: The turning or rotating effect a force has on a tooth — by controlling this, orthodontists can precisely determine how a tooth moves.
Lab Process · Intermediate · Core · student, lab
Clinical: A dental restoration fabricated from a single, uniform block of material without a separate veneering layer; modern high-translucency zirconia (HT, UHT) monolithic crowns offer excellent strength with reduced chipping risk compared to layered restorations.
Plain English: A crown or bridge made from one solid piece of material — no layered porcelain — which is stronger and less likely to chip, especially in the back of the mouth.
Materials · Advanced · Core · student, lab
Clinical: A full-contour crown milled entirely from zirconia without a porcelain overlay, offering maximum strength and resistance to chipping.
Plain English: A very strong all-zirconia crown that won't chip because it's made from one solid material.
Specialty · Intermediate · Core · student, front-desk
Clinical: A patient-centered counseling technique adapted for dentistry to help patients explore and resolve ambivalence about behavior change (e.g., improving oral hygiene, reducing sugar intake, wearing retainers); uses open-ended questions, reflective listening, affirmations, and summaries to guide the patient toward self-motivated change.
Plain English: A communication technique used in dentistry to help patients make healthy changes — instead of lecturing, the provider asks guiding questions that help patients talk themselves into better habits.
Radiology · Intermediate · Core · student, radiology
Clinical: Magnetic resonance imaging provides excellent soft tissue detail without ionizing radiation; in dentistry, primarily used for TMJ evaluation (disc position, disc morphology, joint effusion, bone marrow changes) and for evaluating salivary gland tumors, jaw pathology, and nerve involvement in tumors.
Plain English: An imaging technique using magnets (no X-rays) that shows soft tissues in excellent detail — in dentistry, it's used mainly to see the jaw joint's disc and soft tissue structures that don't show on regular X-rays.
Materials · Advanced · Core · student
Clinical: A biocompatible hydraulic calcium silicate cement with excellent sealing ability and bioactivity; used for direct pulp capping, apexification, perforation repair, and root-end filling; stimulates the formation of a calcific barrier.
Plain English: A special dental cement that encourages the tooth to heal itself — used when a nerve is exposed or needs to be capped off, and when sealing the tip of a root.
Pathology · Intermediate · Nice-to-know · student
Clinical: Mucus-filled swelling in minor salivary gland tissue due to rupture of a duct and spillage of mucin into surrounding tissues.
Plain English: A harmless, fluid-filled bump on the inside of the lip or mouth caused by a blocked or injured salivary gland.
Periodontics · Advanced · Nice-to-know · student
Clinical: The boundary line separating the keratinized attached gingiva from the non-keratinized alveolar mucosa; important in planning grafting procedures.
Plain English: The line separating the firm gum tissue attached to your bone from the looser tissue below it.
Periodontics · Intermediate · Core · student
Clinical: The anatomical boundary between the attached keratinized gingiva and the more mobile, non-keratinized alveolar mucosa; visible as a line demarcating the change in tissue color and texture; its location determines the width of attached gingiva.
Plain English: The line that separates the firm pink gum tissue from the looser, darker mucosa below — the distance from here to the gum margin tells us how much firm gum tissue a tooth has.
Oral Medicine · Advanced · Core · student
Clinical: Painful inflammation and ulceration of the oral mucosal lining occurring as a side effect of cancer chemotherapy or radiation therapy to the head and neck; results from direct cytotoxic injury to the rapidly dividing epithelial cells of the mucosa.
Plain English: Severe, painful mouth sores that develop as a complication of cancer treatment — the lining of the mouth breaks down because chemotherapy and radiation damage the rapidly dividing cells that keep it healthy.
Lesion Descriptor · Advanced · Nice-to-know · student, radiology
Clinical: Radiographic or clinical term describing a lesion with multiple compartments or loculations separated by bone or septa.
Plain English: Describes a lesion that appears to have many small connected spaces, like soap bubbles, on an x-ray.
Anatomy · Intermediate · Core · student
Clinical: The four paired muscles that move the mandible for chewing: masseter (jaw closing, power), temporalis (jaw closing, retrusion), medial pterygoid (jaw closing, side-to-side), and lateral pterygoid (jaw opening, protrusion, lateral movement); all innervated by V3.
Plain English: The four paired muscles responsible for chewing — the masseter, temporalis, and two pterygoids — they close, open, and move the jaw side to side, and are all controlled by the same nerve branch.
Orthodontics · Intermediate · Nice-to-know · student, lab
Clinical: A fixed maxillary appliance with molar bands connected by a wire and an acrylic button resting on the palatal rugae, used as a maxillary molar anchorage device.
Plain English: A device cemented to your upper back teeth with a plastic button on the roof of your mouth to keep molars from moving.
Anatomy · Intermediate · Core · student
Clinical: A branch of the maxillary division (V2) of the trigeminal nerve that exits through the incisive foramen in the anterior palate and supplies sensory innervation to the anterior hard palate and palatal gingiva of the maxillary anterior teeth.
Plain English: The nerve that provides feeling to the front part of the roof of the mouth — anesthetized by a palatal injection just behind the upper front teeth.
Procedure · Intermediate · Core · student
Clinical: A regional anesthetic injection delivering local anesthetic into the incisive foramen behind the maxillary central incisors to anesthetize the anterior palatal mucosa from canine to canine; the most sensitive injection in dentistry due to the dense, tightly bound palatal mucosa.
Plain English: An injection given through the small hole just behind the upper front teeth to numb the front roof of the mouth — considered the most uncomfortable dental injection due to the tight tissue.
Specialty · Intermediate · Core · student, front-desk
Clinical: The immediate response and post-exposure management for a percutaneous injury involving a sharp instrument contaminated with a patient's blood or body fluid; includes wound care, patient and employee blood testing, post-exposure prophylaxis (PEP) evaluation, and OSHA incident reporting.
Plain English: The steps taken immediately after an accidental needle stick or cut with a contaminated instrument — including washing the wound, testing the patient's blood, and considering preventive medication.
Digital Dentistry · Intermediate · Nice-to-know · lab
Clinical: The CAD/CAM process of arranging multiple restorations within a single milling block or print tray to optimize material use.
Plain English: Arranging multiple tooth restorations in one block of material before milling to reduce waste.
Prosthodontics · Basic · Core · student, lab
Clinical: A removable, hard or dual-laminate occlusal splint worn during sleep to protect teeth and TMJ from bruxism forces.
Plain English: A custom mouthguard worn at night to protect your teeth from grinding and relieve jaw pressure.
Pediatric · Basic · Nice-to-know · front-desk, pediatric
Clinical: Inhalation of a titratable mixture of nitrous oxide and oxygen to reduce anxiety and enhance cooperation during dental treatment.
Plain English: Breathing in 'happy air' through a small nose mask to help kids feel more relaxed during treatment.
Lesion Descriptor · Basic · Nice-to-know · student
Clinical: Palpable, solid lesion that is larger and often deeper than a papule, extending into deeper tissues.
Plain English: A larger, firm lump in or under the tissue that you can feel when you press on it.
Insurance · Basic · Core · student, front-desk
Clinical: A dental procedure that is excluded from coverage under a benefit plan, either by category (e.g., cosmetic) or by frequency limitation, regardless of clinical necessity.
Plain English: A dental service your insurance plan does not pay for, which means you pay the full cost.
Specialty · Intermediate · Core · student
Clinical: Non-steroidal anti-inflammatory drugs used for perioperative pain management in dentistry; work by inhibiting cyclooxygenase (COX) enzymes, reducing prostaglandin synthesis and thus pain, inflammation, and fever; ibuprofen and naproxen are the most commonly used in dentistry.
Plain English: Anti-inflammatory pain medications like ibuprofen used before and after dental procedures — they reduce pain and swelling by blocking the body's inflammatory chemicals.
Pediatric · Basic · Core · front-desk, pediatric
Clinical: Prefabricated tooth-colored full coverage crown used to restore extensively decayed primary teeth with improved esthetics.
Plain English: A white cap for a baby tooth that looks more like a natural tooth.
Radiology · Intermediate · Nice-to-know · student, radiology
Clinical: A radiolucent channel visible on periapical or panoramic radiographs in the anterior mandible, representing a vascular or neural channel coursing through the bone; a normal anatomic variant that must be distinguished from pathologic radiolucencies.
Plain English: A normal dark channel visible on X-rays of the lower front teeth area — it's a natural blood vessel or nerve channel in the bone, not a cavity or pathology.
Endodontics · Intermediate · Core · student
Clinical: The three-dimensional filling of the root canal system after cleaning and shaping, typically using gutta-percha and a sealer to create a fluid-tight seal that prevents reinfection.
Plain English: The step in root canal treatment where the cleaned canal is completely filled and sealed to prevent bacteria from getting back in.
Lab Process · Intermediate · Core · student, lab
Clinical: The verification of centric occlusal contacts and excursive movements on the articulator before delivery of a restoration; the restoration should have even bilateral contacts in centric, anterior guidance in protrusion, and no balancing side interferences.
Plain English: Checking the bite contacts on the articulator before delivering a crown or denture — making sure the restoration touches evenly in the bite and doesn't create any interferences when the jaw moves.
Prosthodontics · Advanced · Nice-to-know · student
Clinical: The selective reshaping of occlusal surfaces by grinding to achieve a harmonious occlusal relationship, eliminate premature contacts, and distribute occlusal forces evenly across all teeth in centric relation and lateral excursions.
Plain English: Carefully adjusting the biting surfaces of teeth by grinding small amounts so that all teeth hit evenly and the jaw moves smoothly.
Preventive · Basic · Core · student, front-desk, pediatric
Clinical: A removable protective device covering the teeth and surrounding structures to protect against traumatic dental injuries during contact sports; custom-fabricated laboratory or vacuum-formed mouth guards provide superior protection to stock or boil-and-bite over-the-counter types.
Plain English: A custom-made mouthguard worn during sports to protect the teeth from impact — custom guards from a dentist fit much better and provide more protection than store-bought versions.
Implant · Advanced · Core · student
Clinical: Excessive occlusal forces applied to an implant-supported restoration, causing mechanical and biological complications including screw loosening, abutment fracture, implant fracture, or peri-implant bone loss; occurs when cantilevers are too long, implant density is insufficient, or parafunctional habits are not controlled.
Plain English: Too much biting force on an implant crown — it can loosen screws, crack the crown, or damage the surrounding bone; patients who grind their teeth are at highest risk.
Orthodontics · Intermediate · Core · student, lab
Clinical: An imaginary plane that contacts the incisal edges of the anterior teeth and the cusp tips of the posterior teeth.
Plain English: An imaginary flat surface that touches the biting edges of your teeth from front to back.
Radiology · Intermediate · Nice-to-know · student, radiology
Clinical: An intraoral radiograph taken with the film or sensor placed horizontally in the occlusal plane, providing a broad view of the palate, floor of the mouth, or tooth positions; used to locate supernumerary teeth, impacted teeth, and assess pathology.
Plain English: A special X-ray taken with a flat sensor resting on your teeth, giving a bird's-eye view of your upper or lower arch — useful for finding hidden teeth or jaw pathology.
Procedure · Intermediate · Core · student, lab
Clinical: The removal of sufficient tooth structure from the occlusal or incisal surface of a prepared tooth to provide adequate space for the restorative material to achieve appropriate thickness without over-contouring or creating a high bite; requirements vary by material.
Plain English: The step in crown preparation where enough of the chewing surface is reduced to make room for the crown material — too little space causes a high bite or a thin, weak crown.
Lab Process · Intermediate · Core · student, lab
Clinical: A wax or acrylic registration block on a denture base used to record the patient's vertical dimension of occlusion, centric relation, lip support, and tooth position during edentulous denture fabrication; the record is then transferred to an articulator for tooth arrangement.
Plain English: The wax block placed in an edentulous patient's mouth to record how far open the jaw should be and where the teeth should be placed — the information is transferred to the lab to set the denture teeth.
Prosthodontics · Intermediate · Core · student, lab
Clinical: The planned pattern of tooth contacts in centric occlusion and during lateral/protrusive excursions; includes mutually protected occlusion, canine guidance, or group function.
Plain English: The way your teeth are designed to touch and slide against each other — important for how long your restorations last.
Oral Medicine · Intermediate · Core · student, front-desk
Clinical: A removable hard acrylic appliance that covers the occlusal surfaces of one arch (typically maxillary) and is precisely adjusted to provide an ideal occlusal surface; used to manage bruxism, TMD, and protect teeth from parafunctional forces.
Plain English: A custom night guard that fits over the upper teeth — worn during sleep to prevent grinding damage and reduce jaw muscle tension.
Anatomy · Basic · Core · student, lab, front-desk
Clinical: The chewing surface of posterior teeth that contacts opposing teeth during mastication.
Plain English: The biting and chewing surface on the top of your back teeth.
Prosthodontics · Intermediate · Core · student, lab
Clinical: The vertical measurement of the face when the teeth are in maximum intercuspation; a critical parameter in complete denture construction and full-mouth rehabilitation that must be maintained or appropriately restored.
Plain English: The height of your face when your teeth are closed together — this dimension must be carefully preserved or restored when making dentures or rebuilding a full mouth.
Pathology · Advanced · Core · student
Clinical: An aggressive odontogenic cyst with a characteristic parakeratinized epithelial lining; formerly called keratocystic odontogenic tumor (KCOT) reflecting its neoplastic behavior; high recurrence rate (25–60%) due to satellite cysts and thin friable wall; mandibular third molar region most common location.
Plain English: An aggressive jaw cyst with a high tendency to return after removal — it often grows extensively before detection and is associated with a hereditary condition called Gorlin syndrome.
Pathology · Intermediate · Core · student, radiology
Clinical: The most common odontogenic tumor; considered a hamartoma (developmental malformation) rather than a true neoplasm; composed of all dental tissues (enamel, dentin, cementum, pulp); two types: compound odontoma (recognizable tooth-like structures) and complex odontoma (disorganized mass of dental tissue).
Plain English: The most common jaw tumor — it's not really a cancer but a developmental mass of mixed tooth tissue; usually discovered on X-ray when investigating why a tooth hasn't erupted.
Specialty · Advanced · Nice-to-know · student
Clinical: A dental public health epidemiological index developed by Greene and Vermillion to assess oral hygiene status in populations; scores debris and calculus on six index teeth surfaces; used in community surveys and clinical trials to measure population oral hygiene levels and track improvements over time.
Plain English: A standardized scoring system used in public health surveys to measure how clean or dirty people's teeth are — scores debris and tartar on selected teeth to give a population-level oral hygiene snapshot.
Prosthodontics · Intermediate · Nice-to-know · student, lab
Clinical: An indirect restoration that covers one or more cusps of a tooth while preserving as much natural tooth structure as possible.
Plain English: A lab-made restoration that covers the biting surface and one or more cusps of a tooth.
Procedure · Intermediate · Core · student, lab
Clinical: A laboratory-fabricated extracoronal restoration that extends over one or more cusps of a posterior tooth, providing cuspal protection not offered by an inlay; used when cusps are weakened by caries, fracture, or large existing restorations but full crown coverage is not yet required.
Plain English: A custom-made restoration that covers one or more weakened cusps of a back tooth — it's more conservative than a crown but more protective than a regular inlay.
Orthodontics · Intermediate · Nice-to-know · student, lab
Clinical: A malocclusion in which upper and lower teeth fail to make vertical contact in the affected region when the jaws are in maximum intercuspation.
Plain English: A gap between your upper and lower teeth when your mouth is closed, even though the back teeth are touching.
Orthodontics · Intermediate · Core · student, front-desk
Clinical: A malocclusion in which anterior or posterior teeth fail to occlude when the posterior (or anterior) teeth are in contact; dental open bite caused by habits (tongue thrust, thumb sucking); skeletal open bite associated with a high-angle facial growth pattern and requires orthopedic or surgical management.
Plain English: When the upper and lower front (or back) teeth don't touch when biting — it can be caused by a thumb-sucking habit (dental) or by the shape of the jaws themselves (skeletal).
Procedure · Intermediate · Core · student, lab, front-desk
Clinical: A deficient or absent interproximal contact between adjacent teeth, allowing food impaction and increasing risk of caries and periodontal disease.
Plain English: A gap between neighboring teeth where there should be contact, causing food to get stuck.
Periodontics · Advanced · Core · student
Clinical: A periodontal surgical procedure in which a full-thickness mucoperiosteal flap is elevated to gain direct access for thorough debridement of root surfaces and osseous defects that cannot be adequately addressed by non-surgical treatment.
Plain English: A gum surgery where the gum is gently folded back to allow thorough cleaning of the tooth root and bone that couldn't be reached with regular deep cleaning.
Specialty · Basic · Core · student, front-desk
Clinical: The dental specialty concerned with the diagnosis and surgical treatment of diseases, injuries, and defects of the hard and soft tissues of the oral and maxillofacial region; includes tooth extractions, implant surgery, orthognathic surgery, trauma, pathology, and reconstruction.
Plain English: The dental specialty that performs surgery of the mouth, jaws, and face — from wisdom tooth removal to jaw surgery, tumor removal, and facial trauma repair.
Oral Medicine · Advanced · Core · student
Clinical: The most common malignancy of the oral cavity, accounting for >90% of oral cancers; arises from the squamous epithelium of the oral mucosa; most commonly found on the lateral border of the tongue and floor of mouth; strongly associated with tobacco, alcohol, and HPV-16.
Plain English: The most common type of mouth cancer — it can appear as a persistent sore, lump, or white/red patch, and is most common in tobacco users, heavy drinkers, and people exposed to certain HPV strains.
Preventive · Basic · Core · student, front-desk
Clinical: A systematic extraoral and intraoral examination performed at recall appointments to detect signs of oral cancer, dysplasia, or other potentially malignant disorders at the earliest possible stage; includes palpation of lymph nodes and soft tissue visualization.
Plain English: A visual and physical check of the entire mouth, lips, tongue, cheeks, and neck glands done at routine dental visits to catch any signs of oral cancer early.
Preventive · Basic · Core · student, front-desk
Clinical: A systematic clinical examination of all mucosal surfaces including lips, tongue (dorsal, lateral, ventral), floor of mouth, hard and soft palate, buccal mucosa, and oropharynx performed at recall appointments; designed to detect potentially malignant lesions or oral cancer at an early, more treatable stage.
Plain English: A thorough head-and-neck and mouth examination at every dental visit to detect early signs of oral cancer — including visual and tactile examination of all mucosal surfaces, not just the teeth.
Pathology · Intermediate · Nice-to-know · student
Clinical: Fungal infection of the oral mucosa caused primarily by Candida species, presenting with various clinical forms such as pseudomembranous or erythematous candidiasis.
Plain English: A yeast or fungal infection in the mouth that can cause white patches or redness and soreness.
Preventive · Basic · Nice-to-know · student, front-desk
Clinical: The practices and procedures that maintain cleanliness of the oral cavity to prevent dental and periodontal disease, including toothbrushing and interdental cleaning.
Plain English: Daily care of your mouth — brushing, flossing, and rinsing — to keep teeth and gums healthy.
Oral Medicine · Advanced · Core · student
Clinical: A chronic immune-mediated inflammatory condition affecting the oral mucosa; presents as bilateral white reticular (Wickham's striae), erosive, atrophic, or bullous lesions; buccal mucosa most common site; T-cell mediated attack on basal keratinocytes; has low malignant transformation potential (~1%).
Plain English: A chronic inflammatory mouth condition that causes a lacy white pattern or painful sores on the inner cheeks — it's caused by the immune system mistakenly attacking the lining of the mouth.
Oral Medicine · Advanced · Core · student
Clinical: Oral conditions commonly associated with HIV infection and AIDS, including candidiasis (pseudomembranous, erythematous), hairy leukoplakia (EBV-associated white lesion on lateral tongue), linear gingival erythema, necrotizing ulcerative periodontitis, and Kaposi's sarcoma; oral lesions are often the first clinical signs of HIV.
Plain English: Mouth conditions that frequently appear in HIV/AIDS patients — including white patches, unusual gum disease, and rare tumors — that may be the first sign of the infection.
Specialty · Basic · Nice-to-know · student, front-desk
Clinical: A dental specialty focused on the diagnosis and non-surgical management of medically complex dental patients and patients with oral manifestations of systemic diseases; practitioners manage oral mucosal diseases, salivary gland conditions, orofacial pain, and the dental care of patients undergoing cancer treatment.
Plain English: The dental specialty that specializes in diagnosing and managing mouth conditions related to health conditions — including oral sores, dry mouth, and the care of cancer patients.
Oral Medicine · Basic · Core · student
Clinical: The moist lining tissue of the oral cavity, consisting of stratified squamous epithelium; includes masticatory, lining, and specialized mucosa.
Plain English: The moist tissue lining the inside of your mouth — your cheeks, gums, tongue surface, and palate.
Specialty · Basic · Core · student
Clinical: The dental specialty that identifies and manages the causes, processes, and effects of oral disease through the examination of biopsy tissue, cytological smears, and radiographic studies; oral pathologists render the microscopic diagnosis of biopsied oral lesions.
Plain English: The dental specialty that examines tissue samples under a microscope to diagnose oral disease — when a dentist sends a biopsy to a lab for analysis, an oral pathologist is the one reading it.
Pathology · Advanced · Nice-to-know · student
Clinical: Malignant epithelial neoplasm arising from the oral mucosal epithelium, most commonly affecting the tongue, floor of mouth, and soft palate.
Plain English: The most common type of mouth cancer that can appear as a sore, lump, or red/white patch that does not heal.
Oral Surgery · Advanced · Core · student
Clinical: An abnormal opening between the oral cavity and the maxillary sinus, most commonly following extraction of an upper posterior tooth with roots projecting into the sinus floor; presents as air passing through the socket (Valsalva test positive), fluid from nose on rinsing, or nasal regurgitation.
Plain English: A hole connecting the mouth to the sinus above after an upper back tooth is removed — the patient notices air or fluid flowing between the mouth and nose; requires surgical repair if more than a few millimeters.
Procedure · Intermediate · Nice-to-know · student, front-desk
Clinical: Placement of brackets and bands on teeth to begin active orthodontic treatment.
Plain English: Putting braces on the teeth to start straightening them.
Specialty · Basic · Core · student, lab
Clinical: The dental specialty concerned with the diagnosis, prevention, interception, and correction of malpositioned teeth and jaws, as well as dentofacial orthopedics and management of neuromuscular and skeletal abnormalities.
Plain English: The branch of dentistry that straightens teeth and corrects jaw alignment using braces, clear aligners, and other custom appliances.
Oral Surgery · Advanced · Core · student, front-desk
Clinical: Surgical correction of skeletal jaw discrepancies (Class II, Class III, open bite, asymmetry) that cannot be adequately treated with orthodontics alone; involves osteotomies of the maxilla (Le Fort I), mandible (BSSO), or both, combined with pre- and post-surgical orthodontic treatment.
Plain English: Jaw surgery to correct major bite problems when braces alone can't fix the underlying bone structure — the jaw bones are cut, repositioned, and held in place with plates and screws.
Specialty · Basic · Core · student, front-desk
Clinical: The Occupational Safety and Health Administration standards that regulate dental workplace safety, including the Bloodborne Pathogen Standard (29 CFR 1910.1030), Hazard Communication Standard (chemical safety), and requirements for exposure control plans, hepatitis B vaccination, and PPE provision.
Plain English: Federal workplace safety regulations that dental offices must follow — covering protection from blood exposure, chemical safety, vaccination requirements, and proper training for all staff.
Specialty · Intermediate · Core · student, front-desk
Clinical: A US federal workplace safety regulation (29 CFR 1910.1030) requiring dental employers to protect employees from occupational exposure to blood and bloodborne pathogens (HIV, HBV, HCV); requires an Exposure Control Plan, annual training, hepatitis B vaccination offer, and post-exposure evaluation.
Plain English: The federal law requiring dental offices to protect employees from blood-borne infection risks — it mandates protective equipment, staff training, hepatitis B vaccination, and a plan for accidental exposure.
Implant · Intermediate · Nice-to-know · student, lab
Clinical: The direct, structural, and functional connection between vital bone tissue and the surface of a load-bearing implant, as defined by Brånemark.
Plain English: The process by which your jawbone grows tightly around a dental implant, making it stable and permanent.
Periodontics · Advanced · Nice-to-know · student
Clinical: An irregularity or loss of alveolar bone around a tooth due to periodontal disease, classified by the number of remaining bony walls (1-wall, 2-wall, 3-wall, or combination defect).
Plain English: An area of bone loss around a tooth caused by gum disease; the shape of the defect determines how it can be treated.
Periodontics · Advanced · Core · student
Clinical: A surgical procedure that reshapes the alveolar bone supporting the teeth to eliminate infrabony pockets and create a more physiologic bone architecture, reducing areas where bacteria can accumulate and improving long-term periodontal maintenance.
Plain English: Surgery to reshape the bone around teeth that have been damaged by gum disease — smoothing out irregular bone to reduce deep pockets and make cleaning easier.
Oral Medicine · Advanced · Core · student, front-desk
Clinical: Medication-related osteonecrosis of the jaw (MRONJ): exposed, necrotic jaw bone persisting >8 weeks in a patient taking antiresorptive or antiangiogenic medications (bisphosphonates, denosumab, bevacizumab) without a history of radiation therapy; most commonly triggered by tooth extraction.
Plain English: Dead jawbone exposed in the mouth in patients taking certain osteoporosis or cancer medications — the medication impairs bone healing after tooth extraction or trauma, leaving bone exposed and vulnerable to infection.
Oral Medicine · Intermediate · Core · student, front-desk
Clinical: A systemic skeletal disease characterized by reduced bone mineral density and microarchitectural deterioration; relevant to dentistry because bone loss can affect alveolar bone quality and quantity, patients are often on bisphosphonates (MRONJ risk), and panoramic bone density may suggest systemic osteoporosis.
Plain English: A condition that weakens bones throughout the body — in dentistry, it matters because medications used to treat it (bisphosphonates) can cause serious jaw complications, and the jaw bone may be weaker for implant placement.
Implant · Advanced · Core · student
Clinical: The precisely controlled series of drilled holes prepared in bone to accept a dental implant, using a sequential set of drills of increasing diameter; preparation must be performed under copious irrigation to prevent bone overheating (necrosis) above 47°C.
Plain English: The series of precisely sized holes drilled in the jawbone to prepare the site for a dental implant — done slowly with cooling water to protect the bone.
Insurance · Intermediate · Nice-to-know · front-desk
Clinical: The maximum dollar amount a patient is required to pay for covered services within a benefit period, after which the plan covers 100% of allowed costs; more common in medical than dental plans.
Plain English: The most you would ever have to pay in a year before your insurance covers everything — if your plan has this feature.
Prosthodontics · Advanced · Core · lab
Clinical: A pontic design in which the tissue-facing surface is convex and fits into a prepared socket in the edentulous ridge, mimicking a natural tooth emergence profile.
Plain English: A false tooth on a bridge designed with a rounded bottom that fits gently into the gum for the most natural appearance.
Orthodontics · Basic · Core · student, lab
Clinical: The vertical overlap of the maxillary incisors over the mandibular incisors, measured in millimeters or as a percentage of the lower incisor crown height.
Plain English: How much your upper front teeth overlap your lower front teeth vertically.
Procedure · Intermediate · Core · lab
Clinical: Excessive bulk in the contour of a restoration or crown that prevents normal self-cleansing and increases plaque retention, particularly at the gingival third.
Plain English: When a crown or filling is too bulky in shape, making it hard to keep clean and leading to gum problems.
Prosthodontics · Basic · Core · student, lab
Clinical: A removable prosthesis that overlies and is supported by two or more retained natural tooth roots or osseointegrated implants, using attachment systems for retention.
Plain English: A removable denture that snaps onto implants or tooth roots for much better stability.
Procedure · Intermediate · Core · student, lab
Clinical: Excess restorative material that extends beyond the margin of a restoration onto the root surface or into the interproximal space, promoting plaque accumulation.
Plain English: Extra filling material that sticks out past the edge of a restoration — a common cause of gum irritation.
Procedure · Basic · Core · student, radiology
Clinical: Excess restorative material (amalgam, composite, or cement) extending beyond the cavity margin onto the interproximal root surface; creates a plaque-retention site contributing to secondary caries and interproximal periodontal disease.
Plain English: When a filling extends beyond the edge of the prepared cavity between the teeth — the excess material traps plaque and contributes to gum disease and new cavities.
Specialty · Advanced · Nice-to-know · front-desk
Clinical: The total operating costs of a dental practice excluding the owner's compensation; expressed as a percentage of gross collections; includes staff salaries, rent/facility costs, lab fees, dental supplies, equipment, and marketing; industry benchmark is 55–65%.
Plain English: All the costs of running a dental practice — salaries, rent, supplies, lab fees — expressed as a percentage of revenue; a practice with overhead above 65–70% typically struggles to be profitable.
Orthodontics · Intermediate · Nice-to-know · student, lab
Clinical: The horizontal distance between the labial surface of the most prominent maxillary incisor and the corresponding labial surface of the mandibular incisors.
Plain English: How far your upper front teeth stick out in front of your lower front teeth.
Anatomy · Basic · Core · student, lab
Clinical: The surface of a maxillary tooth facing the palate (roof of the mouth).
Plain English: The roof-of-mouth side of your upper teeth.
Anatomy · Intermediate · Core · student, radiology
Clinical: The mid-palatal suture is the fibrous joint between the two halves of the maxilla running down the midline of the palate; in growing patients it can be opened (expanded) with a rapid palatal expander; the suture fuses progressively from posterior to anterior during adolescence and into early adulthood.
Plain English: The growth line running down the center of the roof of the mouth — in children and teenagers it can be separated by an expander to widen the upper jaw; it gradually fuses with age.
Anatomy · Intermediate · Nice-to-know · student
Clinical: A tooth numbering system that uses a bracket symbol to indicate the quadrant and a number (1–8) or letter (A–E) for the tooth within each quadrant; widely used in orthodontics and the United Kingdom.
Plain English: A system used to label teeth with numbers and a bracket to show which corner of the mouth they are in.
Radiology · Basic · Nice-to-know · student
Clinical: Extraoral radiograph that provides a broad single-image view of the maxilla, mandible, teeth, TMJ, and surrounding structures using tomographic rotation.
Plain English: A single large x-ray that shows all your teeth and both jaws in one image.
Radiology · Basic · Core · student, radiology
Clinical: A single extraoral tomographic radiograph that captures the entire dentition, mandible, maxilla, temporomandibular joints, and surrounding structures on one film; uses a rotating X-ray source and detector that move around the patient's head in a coordinated arc.
Plain English: An X-ray that captures the entire mouth, both jaws, all teeth, and the jaw joints on one wide image taken from outside the mouth — the most common dental X-ray for an overall survey.
Periodontics · Intermediate · Core · student
Clinical: The triangular projection of gingival tissue that fills the embrasure space between two adjacent teeth; when healthy, it occupies the space to the contact point; loss of papilla creates a 'black triangle' defect with esthetic and phonetic implications.
Plain English: The triangular point of gum tissue that sits in the space between two teeth — when gum disease or other factors cause it to shrink, a dark triangular gap (black triangle) appears between the teeth.
Lesion Descriptor · Basic · Nice-to-know · student
Clinical: Small, circumscribed, solid elevation of the mucosa or skin usually less than 1 cm in diameter.
Plain English: A small, raised bump in the mouth you can see and feel.
Oral Medicine · Basic · Core · student, front-desk, pediatric
Clinical: A repetitive, non-functional oral behavior that places excessive or abnormal forces on the teeth, muscles, or TMJ; common parafunctional habits include bruxism (grinding), clenching, nail biting, pen chewing, and digit sucking.
Plain English: Any repetitive habit involving the mouth that goes beyond eating and speaking — like grinding, clenching, nail biting, or thumb sucking — which can damage teeth, muscles, and the jaw joint over time.
Radiology · Basic · Core · student, radiology
Clinical: An intraoral radiographic technique in which the X-ray film or sensor is positioned parallel to the long axis of the tooth and the central X-ray beam is directed perpendicular to both the film and the tooth; produces the most dimensionally accurate periapical images.
Plain English: The standard technique for taking dental X-rays where the sensor is held parallel to the tooth and the beam is aimed straight at it — producing the most accurate, undistorted image.
Oral Medicine · Intermediate · Core · student, front-desk
Clinical: An abnormal sensation such as numbness, tingling, or burning in a body part, often caused by nerve injury, compression, or pathology.
Plain English: An unusual feeling like numbness or tingling, often in the lip or tongue, that can occur after dental procedures or nerve injury.
Anatomy · Intermediate · Core · student
Clinical: The largest of the three major salivary glands, located anterior and inferior to the ear overlying the masseter; produces primarily serous (watery) saliva delivered via Stensen's duct opening at the parotid papilla opposite the maxillary second molar; the facial nerve (CN VII) passes through the parotid gland.
Plain English: The largest saliva gland, located in front of the ear — it produces watery saliva through a duct that opens inside the cheek opposite the upper second molar; the facial nerve runs through it.
Prosthodontics · Basic · Core · student, lab
Clinical: A removable prosthesis replacing some but not all teeth in an arch, using a cast metal or resin framework, clasps on remaining teeth for retention, and acrylic saddles bearing denture teeth.
Plain English: A removable appliance that replaces some of your missing teeth and clips onto the teeth you still have.
Implant · Advanced · Core · student, lab
Clinical: The ideal state in which an implant-supported restoration seats completely on the implant without requiring any tightening force to achieve full contact at the implant-abutment interface; misfitting superstructures create peri-implant bone stress and screw loosening.
Plain English: When an implant crown or bridge sits perfectly on the implant with no gap or tension — a misfit creates damaging stress on the implant screws and surrounding bone.
Lesion Descriptor · Basic · Nice-to-know · student
Clinical: Larger flat area of altered color and/or texture, generally greater than a macule in size.
Plain English: A bigger flat area in the mouth that looks different in color or surface from nearby tissue.
Specialty · Basic · Core · front-desk
Clinical: Financial arrangements offered to patients who cannot pay the full treatment fee at the time of service, including in-house payment plans, third-party financing (CareCredit, Lending Club), and dental savings plans; improving access to financing directly increases case acceptance and reduces treatment delays.
Plain English: Payment plan options for patients who can't pay for all their dental work at once — including monthly payment plans through the office or third-party dental financing companies.
Anatomy · Basic · Core · student
Clinical: A specialized connective tissue composed of collagen fiber bundles suspending the tooth in its alveolar socket, transmitting occlusal forces and enabling orthodontic movement.
Plain English: The thin ligament that connects your tooth root to your jawbone, acting as a shock absorber.
Specialty · Intermediate · Core · student
Clinical: A supplemental local anesthetic technique in which anesthetic solution is forcibly injected into the periodontal ligament space between the root and the alveolar bone using a pressure syringe; provides rapid, profound, single-tooth anesthesia with minimal soft tissue numbness.
Plain English: An injection directly into the space around the tooth's root — it numbs just that one tooth very quickly without making the lip or tongue numb.
Oral Medicine · Intermediate · Core · student, front-desk
Clinical: Management of a child or adult with congenital or acquired heart disease requiring dental care; key considerations include antibiotic prophylaxis (specific cardiac conditions per 2007 AHA guidelines), avoiding prolonged procedures that increase stress, and careful monitoring of vital signs and oxygen saturation.
Plain English: A patient with heart disease needing dental care — some heart conditions require a preventive antibiotic dose before dental work to prevent bacteria from causing heart valve infections.
Pediatric · Basic · Nice-to-know · front-desk, pediatric
Clinical: Dentist who has completed additional specialty training to provide comprehensive oral health care for infants, children, and adolescents, including those with special health care needs.
Plain English: A kids' dentist who is specially trained to care for children's teeth and mouths.
Specialty · Basic · Nice-to-know · student, pediatric
Clinical: The dental specialty providing primary and comprehensive preventive and therapeutic oral health care for infants, children, and adolescents, including those with special health care needs.
Plain English: Dentistry specially designed for children's teeth and mouths, from birth through the teenage years.
Pediatric · Basic · Nice-to-know · front-desk, pediatric
Clinical: Comprehensive or periodic oral examination in a child to evaluate teeth, soft tissues, occlusion, and development.
Plain English: A checkup where the dentist 'counts your teeth' and looks at your smile and gums.
Pediatric · Basic · Nice-to-know · front-desk, pediatric
Clinical: Routine professional prophylaxis for a child, including removal of plaque, calculus, and stains and reinforcement of home care.
Plain English: A cleaning visit where the hygienist 'tickles the teeth' to remove sugar bugs and shine the smile.
Lesion Descriptor · Basic · Nice-to-know · student
Clinical: Describes a lesion attached to underlying tissue by a stalk or pedicle.
Plain English: A growth attached by a little stalk, like a mushroom on a stem.
Materials · Advanced · Nice-to-know · student, lab
Clinical: Polyether ether ketone; a high-performance thermoplastic polymer used for implant abutments and frameworks in patients requiring metal-free restorations.
Plain English: A strong tooth-colored plastic alternative to metal used for dental frameworks and abutments.
Orthodontics · Advanced · Nice-to-know · student, lab
Clinical: A fixed intraoral orthodontic appliance anchored to the palate (often using a Nance button) with springs that tip maxillary molars distally to create space for alignment without extractions; requires no patient compliance.
Plain English: A fixed appliance attached to the roof of the mouth that uses spring pressure to push upper back teeth backward, creating space for crowded teeth without needing to remove any.
Pathology · Intermediate · Core · student
Clinical: Inflammatory condition around a dental implant characterized by loss of supporting bone and bleeding on probing, analogous to periodontitis.
Plain English: An infection around a dental implant that causes bone loss and bleeding gums.
Pathology · Intermediate · Core · student, radiology
Clinical: A chronic inflammatory lesion at the root apex consisting of granulation tissue surrounded by fibrous connective tissue, developing in response to pulp necrosis and bacterial antigens diffusing from the root canal system.
Plain English: A small area of chronic infection at the tip of a tooth's root — it's the body's attempt to wall off bacteria leaking from a dead nerve, and shows up as a shadow on an X-ray.
Radiology · Basic · Nice-to-know · student
Clinical: Intraoral radiograph that shows the entire tooth from crown through root apex and at least 2–3 mm of surrounding periapical bone.
Plain English: A dental x-ray that shows the entire tooth from top to root tip and the bone around it.
Pathology · Basic · Core · student, front-desk
Clinical: Inflammation and infection of the soft tissue flap (operculum) overlying a partially erupted tooth, most commonly a mandibular third molar; causes pain, swelling, trismus, and a bad taste.
Plain English: An infection of the gum tissue covering a tooth that hasn't fully come in — usually a wisdom tooth — causing pain, swelling, and difficulty opening the mouth.
Periodontics · Basic · Core · student, front-desk
Clinical: The systematic recording of clinical parameters at six sites per tooth — including probing depth, gingival margin level, furcation status, mobility, and bleeding on probing — to document baseline periodontal status and monitor disease progression.
Plain English: A detailed map of your gum health recorded by measuring and noting the depth of the gum pockets around every tooth, along with bleeding and other signs of disease.
Radiology · Intermediate · Core · student, radiology
Clinical: The thin radiolucent space seen between the root of a tooth and the lamina dura on a periapical radiograph, representing the periodontal ligament; normally 0.1–0.3mm wide; widening suggests occlusal trauma, early periapical disease, or systemic disease.
Plain English: The thin dark line seen between a tooth's root and the surrounding bone on X-rays — it represents the ligament holding the tooth in place; widening of this space indicates stress or disease.
Procedure · Intermediate · Nice-to-know · student, front-desk
Clinical: Ongoing periodontal care after active therapy, including removal of plaque and calculus, site-specific scaling, and monitoring of periodontal status.
Plain English: Regular follow-up cleanings and checkups to maintain gum health after gum disease treatment.
Periodontics · Basic · Core · student
Clinical: A pathologically deepened gingival sulcus (>3mm) caused by apical migration of the junctional epithelium and loss of connective tissue attachment; may be true (bone loss present) or pseudo (gingival hyperplasia only).
Plain English: An abnormally deep gap between your gum and tooth — deeper than 3mm — that forms when gum disease destroys the tissue holding the tooth.
Periodontics · Advanced · Core · student
Clinical: The 2017 AAP/EFP classification system for periodontitis using Stage (I–IV, severity of disease based on bone loss, tooth loss, complexity) and Grade (A–C, rate of progression based on risk factors like smoking and diabetes) to guide treatment planning.
Plain English: The current system for categorizing how severe and how fast-progressing a patient's gum disease is — it uses stages for severity and grades for how quickly it's getting worse.
Specialty · Basic · Nice-to-know · student
Clinical: The dental specialty focused on the prevention, diagnosis, and treatment of diseases affecting the supporting tissues of the teeth (gingiva, alveolar bone, periodontal ligament, cementum) and implant therapy.
Plain English: The dental specialty that treats the gums and bone supporting your teeth, including gum disease and implant placement.
Pathology · Intermediate · Core · student
Clinical: Inflammatory disease of the periodontium resulting in irreversible loss of clinical attachment, alveolar bone destruction, and periodontal pocket formation.
Plain English: Advanced gum disease that damages the bone and tissue holding your teeth in place — and is not fully reversible.
Anatomy · Basic · Core · student, front-desk
Clinical: The second and final set of 32 teeth that replace the primary dentition, beginning around age 6.
Plain English: Your adult teeth — the final set you have for life.
Specialty · Basic · Core · student, front-desk
Clinical: Barriers worn by dental personnel to protect against contact with blood, saliva, and airborne pathogens; includes gloves, surgical masks, protective eyewear or face shields, and clinical gowns; required by OSHA under the Bloodborne Pathogen Standard and CDC infection control guidelines.
Plain English: The protective gear all dental team members wear during patient care — gloves, mask, eye protection, and gown — required by law to prevent exposure to blood and saliva.
Prosthodontics · Basic · Core · student, lab
Clinical: Porcelain-fused-to-metal crown; a metal substructure (gold or base metal) veneered with feldspathic or pressable porcelain for esthetics.
Plain English: A crown with a metal base covered in tooth-colored porcelain — strong and natural looking.
Digital Dentistry · Advanced · Nice-to-know · student, lab
Clinical: The light-activated curing reaction that converts liquid resin monomers into a solid polymer, used in 3D printing and light-cured composites.
Plain English: The process of using light to harden dental resins — the same principle used in tooth-colored fillings and 3D printing.
Preventive · Basic · Core · student, front-desk
Clinical: A preventive dental material (resin-based or glass ionomer) applied to the occlusal grooves and pits of posterior teeth to block bacterial and food entry into those sites; reduces caries incidence in sealed surfaces by up to 80%.
Plain English: A protective coating painted into the grooves on the chewing surface of back teeth to prevent cavities from forming in those hard-to-clean areas.
Lesion Descriptor · Basic · Nice-to-know · student
Clinical: Slightly elevated, flat-topped lesion, often formed by coalescing papules or surface thickening.
Plain English: A raised, flat area on the surface of the tissue, like a thickened patch.
Oral Surgery · Advanced · Nice-to-know · student
Clinical: An autologous blood concentrate prepared by centrifuging the patient's own blood without anticoagulants; the resulting fibrin membrane contains concentrated growth factors (PDGF, TGF-β, VEGF) that accelerate soft and hard tissue healing.
Plain English: A healing material made from your own blood — spun in a centrifuge to concentrate the growth factors — and placed in a socket or surgical site to speed up healing.
Implant · Advanced · Nice-to-know · student
Clinical: An implant abutment design concept in which an abutment with a smaller diameter than the implant platform is used, shifting the biological width junction inward and reducing crestal bone stress; associated with less marginal bone resorption.
Plain English: Using an abutment that's narrower than the implant top — this shifts the joint slightly inward and reduces the amount of bone lost around the implant over time.
Materials · Intermediate · Nice-to-know · student, lab
Clinical: Polymethyl methacrylate; the most widely used acrylic polymer in dentistry, forming the basis of denture bases, orthodontic appliances, and interim crowns.
Plain English: The acrylic plastic used to make dentures, retainers, and temporary crowns.
Lab Process · Basic · Core · lab
Clinical: The final step in appliance or restoration fabrication in which abrasive pumice, polishing wheels, and compounds are used to create a smooth, lustrous surface.
Plain English: Smoothing and shining the surface of a restoration or appliance so it's comfortable in your mouth and resistant to staining.
Lab Process · Basic · Core · lab
Clinical: The final laboratory surface finishing step using a sequence of abrasives of decreasing grit to smooth and shine a restoration to its definitive surface quality; polished surfaces harbor less plaque, have better patient acceptance, and reduce opposing tooth wear.
Plain English: The final step in making a dental restoration — progressively finer abrasives are used to create a smooth, shiny surface that resists plaque buildup and looks natural.
Procedure · Basic · Core · student, lab
Clinical: The systematic use of progressively finer abrasives to smooth and shine a restoration or tooth surface; for composite resin: coarse finishing bur → medium diamonds → fine discs → polishing points → polishing paste; for zirconia: diamond-impregnated polishing wheels of decreasing grit.
Plain English: The step-by-step process of making a restoration progressively smoother and shinier — starting with coarser tools and finishing with ultra-fine polishing pastes.
Materials · Basic · Nice-to-know · lab
Clinical: A thermoplastic material used to fabricate orthodontic retainers and aligner-style appliances; valued for clarity, impact resistance, and thermoformability.
Plain English: A clear, tough plastic used to make retainers and some dental trays.
Procedure · Intermediate · Core · student, lab
Clinical: A comparison of traditional physical impressions using PVS or polyether versus digital impressions using intraoral scanners; digital impressions offer greater patient comfort, faster turnaround, and direct integration with CAD/CAM workflows, while physical impressions remain the standard in some complex cases.
Plain English: The choice between taking a physical mold of the teeth (traditional impressions) versus scanning them digitally — digital scanning is more comfortable, faster to the lab, and increasingly standard.
Specialty · Intermediate · Core · student, front-desk
Clinical: The concurrent use of multiple medications (typically ≥5) common in older adults; dental implications include xerostomia (from hundreds of medications), gingival overgrowth (calcium channel blockers, cyclosporine, phenytoin), bleeding risk (anticoagulants), drug interactions with dental medications, and altered healing.
Plain English: When elderly patients take many medications at once — this commonly causes dry mouth, gum overgrowth, increased bleeding during dental work, and interactions with dental drugs.
Materials · Intermediate · Core · student, lab
Clinical: A flexible polymer used as the primary material in clear aligner fabrication (e.g., Invisalign SmartTrack); provides controlled elastic force for tooth movement.
Plain English: The specialized flexible plastic used to make clear aligners like Invisalign.
Materials · Intermediate · Core · student, lab
Clinical: An addition-cured silicone impression material; the gold standard for crown, bridge, and implant impressions due to excellent dimensional stability, detail reproduction, elastic recovery, and ability to be re-poured multiple times without significant distortion.
Plain English: The most accurate type of impression material used for crown and bridge work — a rubber-like silicone that captures fine detail and stays accurate for days, allowing the model to be poured multiple times.
Prosthodontics · Intermediate · Nice-to-know · student, lab
Clinical: The artificial tooth or teeth in a fixed partial denture that replace missing teeth and are suspended between retainer crowns.
Plain English: The fake tooth in the middle of a bridge that fills the space where a tooth is missing.
Lab Process · Advanced · Core · student, lab
Clinical: The manual application of feldspathic or veneering porcelain powder mixed with modeling liquid onto a ceramic or metal framework in successive thin layers; each layer is condensed, shaped, and fired in a ceramic furnace; allows highly esthetic characterization of the restoration with precise shade and surface texture control.
Plain English: The hand-craft technique of building up a crown layer by layer using porcelain powder and liquid — each layer is fired in a furnace, allowing the technician to customize color and translucency precisely.
Digital Dentistry · Basic · Core · student, lab
Clinical: Steps performed after 3D printing to prepare a part for use: removing support structures, washing in isopropyl alcohol to remove uncured resin, and UV-curing to achieve final material properties.
Plain English: The finishing steps after 3D printing — cleaning and hardening the printed piece — before it's used as a model or appliance.
Anatomy · Basic · Core · student, lab
Clinical: The premolars and molars located behind the canines in each arch, primarily responsible for mastication.
Plain English: Your back teeth — the premolars and molars used for chewing.
Orthodontics · Basic · Core · student
Clinical: A continuous elastic chain of interconnected O-rings placed over brackets to apply a closing force between teeth, typically used for space closure after extractions or initial alignment.
Plain English: A stretchy elastic chain that links your braces brackets together to gently pull teeth closer and close gaps.
Specialty · Basic · Core · student, front-desk
Clinical: Protective barriers worn by dental personnel to prevent occupational exposure to bloodborne pathogens and infectious agents; includes gloves, surgical masks or N95 respirators, protective eyewear or face shields, and protective clothing (gowns/lab coats).
Plain English: The protective gear dental staff wear — gloves, mask, eye protection, and gown — to prevent contact with patients' saliva, blood, or aerosols during dental procedures.
Specialty · Intermediate · Core · student, front-desk
Clinical: The administration of an oral anxiolytic medication (typically triazolam or diazepam) 30–60 minutes before a dental appointment to reduce anxiety in patients with moderate dental phobia; requires a patient escort and is distinct from deeper sedation modalities.
Plain English: A mild sedative pill taken before a dental visit to take the edge off anxiety — the patient is relaxed but awake, and must have someone drive them home.
Insurance · Intermediate · Core · front-desk
Clinical: A voluntary process in which the dentist submits a proposed treatment plan to the insurance company before treatment begins to receive a written estimate of benefits; does not guarantee payment but provides guidance.
Plain English: Submitting your treatment plan to insurance ahead of time to find out roughly what they will cover before any work is done.
Insurance · Basic · Core · student, front-desk
Clinical: The most common type of dental insurance in the US, in which a network of contracted dentists agrees to accept reduced fee schedules in exchange for increased patient referrals; patients may see out-of-network dentists but pay more; distinct from HMO (capitation-based) plans.
Plain English: The most common dental insurance type — a network of dentists who accept reduced fees from the insurance company; patients can see dentists outside the network but pay more.
Oral Medicine · Intermediate · Core · student, front-desk
Clinical: The oral and dental care considerations specific to pregnant patients; includes managing pregnancy gingivitis, pyogenic granuloma (pregnancy tumor), risk of emergency dental treatment in any trimester, and elective care preference in the second trimester; local anesthetics and most dental X-rays are considered safe.
Plain English: Dental care during pregnancy — gums often become inflamed, and some dental work is safest to do in the middle trimester; local anesthetic and emergency dental treatment are safe at any stage.
Periodontics · Basic · Core · student, front-desk
Clinical: An exaggerated gingival inflammatory response to bacterial plaque during pregnancy, driven by elevated progesterone and estrogen levels that increase vascular permeability and alter the subgingival microbiome; presents as pronounced redness, edema, and bleeding on minimal probing.
Plain English: The increased gum inflammation that commonly occurs during pregnancy due to hormonal changes — the gums become extra sensitive to plaque and bleed more easily than usual.
Anatomy · Basic · Core · student
Clinical: One of the four posterior teeth in each arch located between the canines and molars, with one or two cusps; also called bicuspids.
Plain English: The teeth between your canines and molars, used for tearing and chewing.
Lab Process · Basic · Core · student, lab
Clinical: A written order from the treating dentist to the dental laboratory specifying the materials, shade, design, dimensions, occlusal scheme, and any special instructions for fabricating a prosthetic restoration; legally required in most US states and serves as the communication document between clinical and laboratory teams.
Plain English: The written instruction form sent from the dentist to the dental lab with everything the technician needs to know: what to make, what material, what shade, and how the bite should look.
Lab Process · Intermediate · Nice-to-know · lab
Clinical: A thermoforming technique similar to vacuum forming but using compressed air on the top side of the heated sheet for sharper detail and better material adaptation.
Plain English: A way of making clear plastic trays that uses air pressure to get a very precise fit over your dental model.
Anatomy · Basic · Core · student, front-desk, pediatric
Clinical: The first set of 20 teeth (deciduous teeth) that erupt beginning around 6 months of age and are gradually replaced by permanent teeth.
Plain English: Your child's first set of teeth — also called baby teeth or milk teeth.
Pediatric · Basic · Nice-to-know · front-desk, pediatric
Clinical: Posterior primary tooth used for chewing and maintaining arch length until permanent successors erupt.
Plain English: A baby back tooth used for chewing food and holding space for grown-up teeth.
Implant · Advanced · Core · student
Clinical: The mechanical interlocking achieved between a freshly placed implant and the surrounding bone at the time of insertion, measured by insertion torque (Ncm) and resonance frequency analysis (ISQ); high primary stability is the prerequisite for immediate loading protocols.
Plain English: How tightly an implant grips the bone the moment it's placed — the higher the stability, the sooner a tooth can be attached to it.
Pediatric · Basic · Nice-to-know · front-desk, pediatric
Clinical: Tooth in the first dentition, commonly called a baby or deciduous tooth, later replaced by a permanent tooth.
Plain English: A baby tooth that will eventually loosen and fall out to make room for a grown-up tooth.
Oral Surgery · Basic · Core · student
Clinical: Healing by primary intention, in which wound edges are approximated with sutures immediately after surgery, allowing direct tissue healing across a closed space with minimal scarring and faster recovery.
Plain English: Closing a surgical wound with stitches right away so the edges heal directly together — the fastest and cleanest way for a surgical site to heal.
Insurance · Basic · Core · student, front-desk
Clinical: A pre-treatment review by the insurance carrier of a proposed dental treatment plan, resulting in approval or denial of benefits before treatment begins; also called predetermination; does not guarantee payment but provides an estimate of coverage.
Plain English: Getting insurance approval before doing a procedure — the dentist sends the plan to the insurance company, which responds with how much they'll cover (not a guarantee of payment).
Periodontics · Basic · Core · student
Clinical: The distance in millimeters from the free gingival margin to the base of the gingival sulcus or periodontal pocket, measured with a calibrated periodontal probe; normal is 1–3mm.
Plain English: The measurement in millimeters of how deep the gap is between your gum and your tooth — healthy gums measure 1–3mm.
Orthodontics · Intermediate · Core · student
Clinical: An inclination of the anterior teeth in which the crowns are tipped forward (facially) relative to the jaw base or the occlusal plane; commonly associated with Class II division 1 malocclusion, tongue thrusting, or lip incompetence.
Plain English: When the front teeth are tipped forward more than they should be — often seen as 'buck teeth' — giving an increased overjet and prominence to the smile.
Preventive · Basic · Core · student, front-desk
Clinical: A preventive dental procedure involving removal of plaque, supragingival calculus, and stains from the clinical crown and exposed root surfaces. Indicated for patients without active periodontal disease (for those with disease, see Periodontal Maintenance).
Plain English: A professional teeth cleaning that removes tartar and stains you can't remove at home. Usually done every six months.
Preventive · Basic · Core · student, front-desk
Clinical: A professional dental cleaning consisting of supragingival and, where accessible, subgingival removal of plaque and calculus (scaling) followed by tooth polishing; performed on patients with healthy periodontium or gingivitis to prevent disease; distinct from the therapeutic scaling and root planing for periodontitis.
Plain English: A routine professional teeth cleaning to remove tartar and plaque buildup above and at the gum line — the standard cleaning for patients with healthy or mildly inflamed gums.
Pediatric · Basic · Core · front-desk, pediatric
Clinical: Routine professional prophylaxis in a pediatric patient; same clinical scope as adult prophylaxis but with adapted instrumentation, shorter appointment, and behavior guidance.
Plain English: A gentle tooth cleaning for kids where the hygienist 'tickles the teeth' to remove sugar bugs and make the smile shine.
Specialty · Basic · Core · student, front-desk
Clinical: The dental specialty concerned with the diagnosis, treatment planning, rehabilitation, and maintenance of oral function, comfort, appearance, and health using biocompatible substitutes for missing or deficient teeth and orofacial tissues; encompasses fixed, removable, and implant prosthetics.
Plain English: The dental specialty focused on restoring and replacing teeth — from single crowns to full-mouth reconstruction, dentures, and implant-supported teeth.
Pediatric · Basic · Nice-to-know · front-desk, pediatric
Clinical: Use of any manual method, physical or mechanical device to restrict patient's movement for safety during treatment, following guidelines and consent.
Plain English: Using gentle holding or special wraps to keep a child safe and still during treatment when needed and with parent permission.
Orthodontics · Intermediate · Nice-to-know · student, lab
Clinical: Tooth contact that occurs when the mandible moves forward from centric occlusion; in an ideal occlusion, anterior teeth guide the mandible (anterior guidance) while posterior teeth disclude; balancing side posterior contacts in protrusion are termed protrusive interferences.
Plain English: Contact between the teeth when the lower jaw moves forward — ideally only the front teeth touch during this movement, allowing the back teeth to separate.
Prosthodontics · Basic · Core · student, lab
Clinical: A temporary restoration protecting a prepared tooth and maintaining esthetics and function while a definitive restoration is being fabricated.
Plain English: A temporary crown worn while your permanent crown is being made in the lab.
Procedure · Basic · Core · student, lab, front-desk
Clinical: A temporary crown, bridge, or filling placed to protect a prepared tooth, maintain esthetics and function, and evaluate the patient's response to treatment while a definitive restoration is being fabricated in the laboratory.
Plain English: A temporary crown or filling placed while your permanent restoration is being made at the dental lab — it protects the tooth and lets you test the shape and bite before the final piece is ready.
Procedure · Intermediate · Core · student, lab, front-desk
Clinical: The area where adjacent teeth touch one another at their mesial and distal surfaces, preventing food impaction and maintaining arch form.
Plain English: The point where neighboring teeth gently touch each other.
Anatomy · Basic · Core · student, front-desk
Clinical: Either of the two contact surfaces (mesial or distal) of a tooth that face adjacent teeth.
Plain English: The sides of a tooth that touch or face the neighboring teeth.
Pathology · Intermediate · Nice-to-know · student
Clinical: Form of oral candidiasis characterized by white, curdlike plaques that can be wiped off, leaving an erythematous surface.
Plain English: White, cottage cheese-like patches in the mouth that can be wiped away, often leaving a red area.
Anatomy · Intermediate · Core · student
Clinical: A fibrous band extending from the hamulus of the medial pterygoid plate to the posterior end of the mylohyoid line on the mandible; the anatomical landmark guiding needle direction for the inferior alveolar nerve block injection.
Plain English: A fibrous band at the back of the mouth that acts as the landmark for giving the inferior alveolar nerve block — the dentist aims the injection just above and behind this structure.
Anatomy · Basic · Core · student
Clinical: The soft vascular and neural tissue contained within the pulp chamber and root canals of a tooth, responsible for tooth vitality and dentin formation.
Plain English: The living tissue inside your tooth containing nerves and blood vessels.
Radiology · Advanced · Core · student, radiology
Clinical: Progressive narrowing or complete calcification of the root canal space, reducing or eliminating the visible radiolucent canal on radiographs; occurs in response to trauma, chronic irritation, or as an aging process; teeth often present with a yellow discoloration.
Plain English: When the inner canal of a tooth slowly fills in with calcium over time, making the tooth look yellow and making root canal treatment extremely difficult if ever needed.
Procedure · Intermediate · Core · student, front-desk
Clinical: Placement of a biocompatible material over an exposed or nearly exposed pulp to promote healing and preserve vitality.
Plain English: Placing a protective medicated layer over the nerve to help keep the tooth alive.
Pathology · Intermediate · Core · student
Clinical: Death of the dental pulp tissue, usually following untreated irreversible pulpitis or trauma, often associated with periapical pathology.
Plain English: When the nerve inside the tooth dies, often after a bad toothache or injury.
Radiology · Intermediate · Nice-to-know · student, radiology
Clinical: A calcified mass within the pulp chamber or canal, composed of irregular dentin or dystrophic calcification; appears as a radiopaque structure within the pulp space on radiographs; generally asymptomatic but may complicate access cavity preparation during root canal treatment.
Plain English: A small hardened calcium deposit inside the nerve space of a tooth — visible on X-rays as a bright spot inside the tooth; usually harmless but can make root canals more challenging.
Procedure · Intermediate · Core · student, front-desk
Clinical: Complete removal of pulp tissue from the crown and root canals of a tooth, followed by cleaning and shaping of the canals.
Plain English: Removing all the nerve tissue from inside the tooth before filling the canals.
Pediatric · Advanced · Core · student, pediatric
Clinical: Complete removal of all pulp tissue from both the coronal and radicular portions of a primary tooth followed by canal obturation with a resorbable material (zinc oxide eugenol or calcium hydroxide paste) that resorbs at the same rate as the primary root.
Plain English: A full root canal on a baby tooth — all the nerve tissue is removed and the canals are filled with a material that dissolves as the baby tooth's root dissolves naturally.
Pathology · Intermediate · Core · student
Clinical: Inflammatory condition of the dental pulp, often secondary to caries or trauma, which may be reversible or irreversible.
Plain English: Inflammation of the nerve inside the tooth that causes toothache, often from a deep cavity.
Endodontics · Intermediate · Core · student
Clinical: Removal of the coronal pulp tissue while leaving the radicular pulp in situ, followed by application of a medicament (e.g., MTA, formocresol) to preserve radicular vitality. Most commonly performed on primary molars; occasionally on immature permanent teeth.
Plain English: A procedure where only the top portion of the nerve in the tooth is removed and a medicated filling is placed to keep the rest of the tooth alive — most often done on baby molars.
Pediatric · Basic · Core · front-desk, pediatric
Clinical: Removal of the coronal portion of the pulp in a primary tooth, leaving radicular pulp treated with medicament to maintain vitality.
Plain English: Taking out only the top part of the nerve in a baby tooth and placing medicine so the tooth can stay in the mouth.
Lesion Descriptor · Basic · Nice-to-know · student
Clinical: Circumscribed elevation of the mucosa containing purulent material (pus).
Plain English: A raised spot in the mouth filled with pus.
Pathology · Basic · Core · student
Clinical: A reactive vascular proliferation of granulation tissue, not a true granuloma; the most common reactive soft tissue lesion of the oral cavity; appears as a smooth or lobulated red, hemorrhagic mass that bleeds easily; associated with local irritation, poor oral hygiene, pregnancy (pregnancy epulis), or trauma.
Plain English: A soft red bump that bleeds very easily — despite the name, it's not an infection but an overgrowth of blood vessel tissue in response to irritation; very common in pregnant women.
Orthodontics · Intermediate · Core · student, lab
Clinical: A fixed palatal expansion appliance with four helical loops soldered to molar bands, used to expand the upper arch slowly and correct posterior crossbites in growing patients.
Plain English: A fixed wire appliance with four small coils that gently widens your upper jaw from the inside to correct a narrow bite.
Anatomy · Basic · Core · student, front-desk
Clinical: One of the four equal sections of the dentition, each containing approximately 8 permanent teeth or 5 primary teeth. Quadrants are upper right, upper left, lower left, and lower right.
Plain English: One of the four sections of your mouth — upper right, upper left, lower left, and lower right.
Oral Medicine · Advanced · Core · student
Clinical: Patients who have received head and neck radiation therapy develop significant oral complications including xerostomia (salivary gland damage), radiation caries, trismus, mucositis, and osteoradionecrosis (ORN); dental clearance before radiation is critical to remove teeth with poor prognosis.
Plain English: Radiation treatment to the head and neck causes severe dry mouth, rapid tooth decay, jaw stiffness, and risk of bone damage — dental care before and after radiation is essential to prevent these complications.
Pathology · Advanced · Nice-to-know · student
Clinical: Inflammatory odontogenic cyst arising from epithelial rests located at the apex of a tooth with a nonvital pulp.
Plain English: A fluid-filled sac that develops at the tip of a dead tooth's root.
Pathology · Intermediate · Core · student, radiology
Clinical: The most common odontogenic cyst overall; forms from the epithelial rests of Malassez in the periodontal ligament stimulated by pulp necrosis and periapical inflammation; presents as a well-defined radiolucency at the root apex of a non-vital tooth; smaller variants may resolve after root canal treatment.
Plain English: The most common jaw cyst — it forms at the tip of a dead tooth's root as a result of infection; often discovered on X-ray and may shrink or resolve after a root canal.
Lesion Descriptor · Basic · Nice-to-know · student, radiology
Clinical: Appearing dark on a radiograph due to less x-ray absorption, indicating less dense structures such as soft tissue or spaces.
Plain English: Shows up darker on an x-ray because it is less dense, like an empty space or soft tissue area.
Lesion Descriptor · Basic · Nice-to-know · student, radiology
Clinical: Appearing light or white on a radiograph due to greater x-ray absorption, indicating denser structures such as bone or calcifications.
Plain English: Shows up whiter on an x-ray because it is denser, like bone or metal.
Pathology · Intermediate · Core · student
Clinical: A mucocele of the sublingual gland or minor salivary gland ducts arising in the floor of the mouth; simple ranula: contained in the floor of mouth above the mylohyoid; plunging ranula: mucous herniates through the mylohyoid muscle into the submandibular or parapharyngeal spaces, presenting as a neck mass.
Plain English: A large fluid-filled swelling on the floor of the mouth from the sublingual gland — it looks like a frog's belly (ranula = little frog); if it extends into the neck it becomes a 'plunging ranula.'
Orthodontics · Intermediate · Core · student, front-desk
Clinical: A fixed orthodontic appliance banded or bonded to the maxillary posterior teeth with a midpalatal expansion screw activated daily or weekly; separates the mid-palatal suture to produce true skeletal widening of the maxilla and increase arch width, correcting posterior crossbites.
Plain English: A fixed appliance on the upper teeth with a small screw activated by the parent daily — it separates the palatal suture down the middle and physically widens the upper jaw to correct a narrow bite.
Procedure · Basic · Core · student, front-desk
Clinical: A periodic dental examination performed at scheduled intervals (typically 6 months but may be 3 or 12 months based on caries and periodontal risk) to assess oral health status, update radiographs, perform prophylaxis, and plan any needed treatment; the foundation of preventive dental care.
Plain English: The regular check-up appointment — usually every 6 months — where the dentist examines the teeth and gums, takes needed X-rays, and addresses any new problems early.
Radiology · Basic · Core · student, radiology
Clinical: The use of a rectangular collimator (beam-limiting device) to restrict the X-ray beam to approximately the size of the sensor, significantly reducing patient radiation dose compared to a round collimator by exposing less surrounding tissue.
Plain English: A device that shapes the X-ray beam to match the size of the sensor exactly — it dramatically reduces the amount of radiation the patient receives compared to older round-beam X-ray heads.
Pathology · Intermediate · Nice-to-know · student
Clinical: Condition characterized by repeated episodes of aphthous ulcers affecting oral mucosa, with various clinical patterns (minor, major, herpetiform).
Plain English: A tendency to keep getting canker sores in the mouth from time to time.
Oral Medicine · Basic · Core · student, front-desk
Clinical: Reactivation of latent herpes simplex virus (HSV-1) from the trigeminal ganglion, manifesting as a prodrome of tingling/burning at the vermilion border of the lip followed by vesicle formation and crusting; triggered by UV light, stress, immunosuppression, or fever.
Plain English: Cold sores — the reactivation of herpes virus on the lip, starting as a tingling feeling then developing into a blister that crusts over within 7–10 days.
Endodontics · Advanced · Core · student
Clinical: A biologically based endodontic procedure for immature permanent teeth with necrotic pulps that aims to replace damaged pulp tissue with new vascular tissue, allowing continued root development (apexogenesis) rather than traditional apexification.
Plain English: A biologic approach for young permanent teeth with dying nerves — instead of just filling the canal, it encourages the body's own stem cells to grow new tissue inside the root so the root can continue to develop.
Orthodontics · Basic · Core · student, front-desk
Clinical: The tendency of teeth to return toward their pre-treatment positions after orthodontic appliances are removed; driven by residual periodontal ligament fiber tension, continued facial growth, muscle pressure, tongue and lip forces, and incomplete bone remodeling.
Plain English: When teeth start drifting back toward their original positions after braces are removed — the main reason retainers must be worn indefinitely.
Lab Process · Intermediate · Core · student, lab
Clinical: The percentage of laboratory cases returned from the clinical practice for remakes or adjustments due to fit, shade, occlusion, or design issues; a key quality and efficiency metric for both the laboratory and the dental practice; industry benchmark is <5%.
Plain English: The percentage of crowns and other lab-made restorations that need to be redone — a measure of quality for both the dentist and the lab; high remake rates cost both money and patient chair time.
Preventive · Intermediate · Core · student
Clinical: The natural process by which calcium and phosphate ions from saliva are deposited back into demineralized enamel, reversing early caries lesions before cavitation occurs; enhanced by fluoride, casein phosphopeptide-amorphous calcium phosphate (CPP-ACP), and good salivary flow.
Plain English: The natural repair process where minerals from saliva rebuild enamel that has been softened by acid attacks — fluoride greatly speeds up this process, allowing early cavities to heal without drilling.
Prosthodontics · Intermediate · Core · student, lab, front-desk
Clinical: A removable prosthesis that replaces one or more missing teeth in a partially edentulous arch; supported by a combination of remaining teeth (via clasps and rests on abutment teeth) and the edentulous ridge; framework typically cast in cobalt-chromium alloy.
Plain English: A removable appliance that replaces several missing teeth — it hooks onto remaining natural teeth with clasps and can be removed for cleaning; the metal framework is custom cast in a dental lab.
Prosthodontics · Intermediate · Core · student, front-desk
Clinical: The progressive, irreversible resorption of the alveolar bone following tooth extraction; the mandibular ridge resorbs at four times the rate of the maxillary ridge; wearing ill-fitting dentures accelerates resorption by concentrating occlusal forces on the bone.
Plain English: The gradual shrinking of the jawbone after teeth are removed — it continues throughout life, causing dentures to become loose over time and eventually leading to very little bone for denture support.
Materials · Intermediate · Core · student, lab
Clinical: An adhesive luting material based on a resin matrix that bonds restorations to tooth structure via micromechanical and chemical adhesion; used for cementing all-ceramic, PFM, inlay/onlay, and implant restorations; available in light-cure, dual-cure, and self-cure formulations.
Plain English: A strong adhesive cement used to permanently attach ceramic or metal crowns, veneers, and inlays — it bonds chemically to both the tooth and the restoration for maximum retention.
Materials · Intermediate · Nice-to-know · student
Clinical: A hybrid material combining conventional glass ionomer chemistry with light-cured resin components; provides improved strength and working time over conventional glass ionomer while retaining fluoride release.
Plain English: A hybrid filling material that combines the fluoride-releasing benefit of glass ionomer with the strength and light-curing convenience of composite.
Orthodontics · Basic · Core · student, lab
Clinical: Any removable or fixed appliance used to maintain teeth in their corrected positions following active orthodontic treatment.
Plain English: A device worn after braces to keep your teeth from shifting back to their original positions.
Orthodontics · Basic · Core · student, lab, front-desk
Clinical: A removable or fixed appliance worn after orthodontic treatment to maintain tooth positions and prevent relapse while the periodontal ligament and surrounding bone remodel to their new positions; retention is now considered life-long by most practitioners.
Plain English: An appliance worn after braces are removed to keep the teeth in their new positions — without it, teeth will gradually drift back toward where they were.
Prosthodontics · Basic · Core · student, lab
Clinical: The property of a prosthesis or restoration that resists removal along or perpendicular to the path of insertion; achieved through crown taper, groove features, or adhesive cement.
Plain English: How well a crown, denture, or other dental appliance stays in place and resists being pulled off.
Orthodontics · Intermediate · Core · student
Clinical: The distal movement of anterior teeth into extraction spaces or residual space, typically performed after canine retraction or en masse to reduce overjet and achieve proper incisor position.
Plain English: Moving the front teeth backward to reduce how far they stick out, usually into a space left by a removed tooth.
Orthodontics · Intermediate · Core · student
Clinical: An inclination of the anterior teeth in which the crowns are tipped backward (lingually) relative to the jaw base; associated with Class III malocclusion camouflage, lip or tongue habits, or certain extraction treatment mechanics.
Plain English: When the front teeth are tipped backward more than they should be, often seen in patients with an underbite or after excessive retraction of the front teeth.
Anatomy · Basic · Nice-to-know · student, lab
Clinical: A pear-shaped soft tissue pad distal to the most posterior mandibular molar composed of glandular, loose connective, and adipose tissue; a key reference landmark for complete denture construction and for locating the pterygomandibular raphe during inferior alveolar nerve blocks.
Plain English: The soft tissue pad at the back of the lower jaw behind the last molar — used as a reference landmark for denture construction and for giving the lower jaw injection.
Lab Process · Basic · Core · lab, front-desk
Clinical: A formal process in the dental lab–practice relationship for managing returned cases; the clinician identifies the problem (poor fit, shade mismatch, design error), communicates it clearly to the lab with photographs, and the lab evaluates whether the error is clinical or lab-based before proceeding with the remake.
Plain English: The structured process for sending a crown or appliance back to the lab for correction — including a clear description and photos of what's wrong so the lab can fix it accurately.
Orthodontics · Intermediate · Core · student
Clinical: An extraoral appliance consisting of a forehead and chin pad connected by a frame with hooks, to which elastics are attached via hooks on the maxillary arch (bonded appliance); applies a forward and downward traction force to the maxilla, stimulating forward maxillary growth in Class III patients.
Plain English: An appliance worn on the face with elastics pulling the upper jaw forward — used in young children with a Class III bite where the upper jaw is not growing forward enough.
Oral Surgery · Advanced · Core · student
Clinical: A surgical procedure to rebuild lost alveolar ridge width and/or height using bone grafts and barrier membranes (guided bone regeneration); performed when ridge dimensions are inadequate for standard implant placement after tooth loss or trauma.
Plain English: Surgery to rebuild a shrunken jawbone that doesn't have enough volume for an implant — a bone graft is placed and protected with a membrane while new bone grows.
Anatomy · Basic · Core · student, radiology
Clinical: The tip of the root of a tooth, where the main foramen (apical foramen) allows passage of nerves and blood vessels between the pulp and the periodontal ligament.
Plain English: The very tip of a tooth's root at the bottom, where the nerve and blood vessels enter the tooth.
Endodontics · Advanced · Core · student
Clinical: The non-surgical re-treatment of a previously root canal-treated tooth that has developed persistent or new periapical disease; involves removing existing root canal filling material, reinstrumentation, and re-obturation of the canal system.
Plain English: Redoing a root canal on a tooth that was previously treated but failed to heal — the old filling is removed, the canals are cleaned again, and the tooth is resealed.
Endodontics · Intermediate · Core · student, lab
Clinical: Endodontic procedure involving chemomechanical preparation (cleaning and shaping) of the root canal system, antimicrobial irrigation, and three-dimensional obturation with gutta-percha and sealer to eliminate infection and seal the canal system.
Plain English: A procedure that removes infected or dead nerve tissue from inside the tooth roots, cleans and shapes them, and fills them to relieve pain and save the tooth.
Preventive · Intermediate · Core · student, front-desk
Clinical: Dental caries affecting exposed root surfaces, occurring when gingival recession exposes the cementum and dentin of the root; the cementum-dentin junction is much less resistant to acid attack than enamel; particularly prevalent in older adults with gingival recession and xerostomia.
Plain English: Cavities on the root surface of teeth — the exposed root is much softer than enamel and decays rapidly, especially in older adults with receded gums and dry mouth.
Pathology · Intermediate · Core · student, radiology
Clinical: The pathologic loss of root structure by odontoclastic cells; can be external (occurring on the outer root surface) or internal (from within the pulp); common as a side effect of orthodontic tooth movement.
Plain English: When the roots of teeth slowly dissolve or shorten — it can happen as a side effect of braces or from other trauma or disease.
Endodontics · Intermediate · Core · student
Clinical: The use of engine-driven nickel-titanium (NiTi) rotary files to clean and shape root canals; superior to hand instrumentation in efficiency, canal centering, and preservation of root structure.
Plain English: Using motorized flexible metal instruments to clean and shape the inside of a root canal faster and more precisely than manual hand files.
Procedure · Basic · Core · student
Clinical: A thin latex or non-latex sheet stretched over the operative field and secured around individual teeth with clamps, providing moisture control, protecting the patient from swallowing materials, and maintaining a sterile field during restorative or endodontic procedures.
Plain English: A small sheet of rubber stretched around a tooth during dental work — it keeps the area dry, protects the patient from swallowing instruments, and greatly improves the quality of the restoration.
Pediatric · Basic · Nice-to-know · front-desk, pediatric
Clinical: Sheet of latex or non-latex material used to isolate teeth from the oral environment during treatment.
Plain English: A tiny 'raincoat' that covers the other teeth and keeps the tooth dry while the dentist works.
Procedure · Basic · Core · student
Clinical: A metal spring clamp placed around the cervical region of a tooth to anchor and stabilize the rubber dam; available in various shapes and sizes for different tooth types (anterior, premolar, molar, broken-down teeth); must be secured with dental floss ligature to prevent aspiration.
Plain English: The metal spring clip that holds the rubber dam in place around a tooth during procedures — it grips the tooth at the gum line to keep the dental field dry and isolated.
Lab Process · Basic · Nice-to-know · lab, front-desk
Clinical: A laboratory case requested for delivery faster than standard turnaround time, typically within 24–48 hours; usually subject to an additional rush fee.
Plain English: A dental lab order that needs to be made faster than usual — often done overnight or in a day — usually because of an urgent patient need.
Oral Surgery · Advanced · Nice-to-know · student
Clinical: A surgical procedure in which osteotomies are made through the lateral walls of the maxilla, pterygoid plates, and septum to mobilize the maxillary halves before RPE activation; used in skeletally mature patients with a fused median suture who need transverse maxillary expansion.
Plain English: Surgery to allow the upper jaw to be widened in adults — the surgeon cuts through the palatal suture and surrounding bone so the expander can separate the jaw halves effectively.
Lesion Descriptor · Basic · Nice-to-know · student
Clinical: Accumulation or shedding of keratinized cells on the surface of the epithelium, producing a flaky surface.
Plain English: A flaky or scaly surface where layers of tissue are peeling or built up.
Procedure · Intermediate · Core · student, front-desk
Clinical: Nonsurgical periodontal therapy that removes plaque and calculus from tooth surfaces and smooths root surfaces to treat periodontal disease.
Plain English: A deep cleaning below the gums to treat gum disease.
Digital Dentistry · Intermediate · Core · student, lab
Clinical: A precisely machined component placed on an implant or abutment during digital impression-taking; the intraoral scanner captures its known geometry, allowing the CAD/CAM software to calculate the implant's exact position, angle, and depth in three dimensions.
Plain English: A small device attached to the implant during a digital scan — the scanner reads its shape to precisely locate the implant in 3D space for designing the crown in CAD software.
Implant · Intermediate · Core · student, front-desk
Clinical: A common complication in implant prosthetics in which the abutment or prosthetic screw becomes loose due to micromotion, off-axis loading, inadequate torque, or misfit of components; manifests as crown mobility, clicking, or patient discomfort.
Plain English: When the screw holding an implant crown or abutment becomes loose — it causes the crown to wiggle or click and needs to be tightened by the dentist.
Implant · Intermediate · Core · student, lab
Clinical: An implant-supported crown that is attached to the abutment or directly to the implant by a prosthetic screw accessed through an occlusal or lingual access hole; provides retrievability without the risk of residual cement in the peri-implant sulcus.
Plain English: An implant crown held in place by a tiny screw rather than cement — the screw is accessed through a small hole in the biting surface and the crown can be removed for maintenance.
Preventive · Basic · Core · student, front-desk, pediatric
Clinical: A resin-based or glass ionomer material applied to the pits and fissures of posterior teeth to create a physical barrier that prevents caries initiation. Most effective on newly erupted permanent molars.
Plain English: A thin protective coating painted into the grooves of back teeth to keep food and bacteria from starting cavities. Painless and quick to place.
Procedure · Intermediate · Core · student, front-desk
Clinical: The use of pharmacological agents to depress the central nervous system and reduce patient anxiety or discomfort during dental treatment. Levels include minimal (anxiolysis), moderate (conscious), deep sedation, and general anesthesia.
Plain English: Medicine used to help you feel relaxed or sleepy during dental treatment.
Orthodontics · Intermediate · Nice-to-know · student, lab
Clinical: An orthodontic bracket with an integrated clip or gate that secures the archwire without elastic or metal ligatures, reducing friction.
Plain English: A special type of braces bracket that holds the wire in place with a built-in clip instead of rubber bands.
Lab Process · Advanced · Core · lab
Clinical: A laboratory instrument that simulates jaw movements using recorded condylar inclinations and facebow transfers, allowing for predictable occlusal design.
Plain English: A lab device that mimics how your jaw moves, allowing technicians to build restorations with the correct bite.
Orthodontics · Basic · Core · student, front-desk
Clinical: Small elastic rings or metal springs placed between posterior teeth approximately one week before banding to create space for molar band placement.
Plain English: Tiny rubber rings placed between your back teeth to make a little room for the metal bands that will go around them.
Orthodontics · Advanced · Nice-to-know · student, pediatric
Clinical: A planned sequence of selected primary and permanent tooth extractions performed in a growing patient over time to guide the eruption of permanent teeth into better positions and reduce the severity of crowding, minimizing the need for later active orthodontic treatment.
Plain English: A planned series of tooth removals over time in a growing child to guide how the permanent teeth come in, reducing crowding without extensive braces.
Lesion Descriptor · Basic · Nice-to-know · student
Clinical: Describes a lesion with a broad base of attachment to the underlying tissue.
Plain English: A growth with a wide base that sits directly on the tissue.
Anatomy · Intermediate · Nice-to-know · student
Clinical: One of the six divisions of the dentition used in periodontal charting: upper right posterior, upper anterior, upper left posterior, lower left posterior, lower anterior, lower right posterior.
Plain English: One of six sections of the mouth used for gum health charting — three on top and three on the bottom.
Lab Process · Intermediate · Core · lab, front-desk
Clinical: A systematic process of recording the color, translucency, and surface characteristics of a patient's teeth for use in creating custom shade formulations for a restoration.
Plain English: Carefully recording the color and appearance of a patient's teeth so the lab can make a restoration that matches naturally.
Procedure · Basic · Core · student, lab
Clinical: The clinical and laboratory process of matching a restoration's color to the patient's natural dentition using a standardized shade guide (Vita Classical, Vita 3D-Master, Chromascop) under calibrated lighting conditions; communicated to the laboratory via shade letter/number, photographs, and custom shade maps.
Plain English: The process of matching the color of a crown or veneer to the patient's natural teeth — done with color guide tabs, good lighting, and photographs sent to the dental lab.
Specialty · Basic · Core · student, front-desk
Clinical: The collection of practices and devices designed to prevent percutaneous injuries from needles, scalpels, and other sharp instruments; includes recapping needles by one-hand scoop technique only, use of safety-engineered sharps, and proper disposal in puncture-resistant sharps containers.
Plain English: Safety practices for handling needles and sharp instruments in the dental office — including never recapping with two hands and always using a proper sharps container.
Specialty · Basic · Core · student, front-desk
Clinical: Practices to prevent needlestick and sharps injuries in the dental operatory; includes recapping with the one-handed scoop technique (or safety cap device), never bending or breaking needles, and immediate disposal into a puncture-resistant, leak-proof sharps container.
Plain English: Safe handling of needles and sharp instruments in the dental office — including how to safely recap needles with one hand and where to dispose of them — to prevent accidental needle sticks.
Oral Medicine · Intermediate · Core · student, radiology
Clinical: The formation of calcified concretions (salivary stones or sialoliths) within a salivary gland duct; most commonly affects the submandibular duct (Wharton's); presents as pain and swelling of the gland during eating with sudden onset.
Plain English: A salivary stone — a hardened mineral deposit blocking a saliva duct that causes painful gland swelling when eating, as saliva backs up behind the blockage.
Oral Medicine · Intermediate · Core · student
Clinical: The formation of calcified concretions (salivary stones or sialoliths) within the ductal system of a major salivary gland, most commonly the submandibular gland (80%); causes mealtime syndrome: sudden painful swelling of the gland at the start of a meal that subsides between meals.
Plain English: Salivary gland stones — calcified deposits that block the saliva duct, causing the gland to painfully swell at mealtimes when it tries to secrete; the submandibular gland is most commonly affected.
Materials · Intermediate · Core · student, lab
Clinical: A bi-functional coupling agent applied to ceramic or glass surfaces to create a chemical bond between the restoration and the resin cement; essential for the adhesive cementation of all-ceramic restorations.
Plain English: A special liquid applied to a ceramic crown or veneer before cementing it — it creates a chemical bridge between the porcelain and the bonding cement.
Materials · Intermediate · Core · student
Clinical: A dental restorative material formed by mixing a silver-tin-copper-zinc alloy powder with liquid mercury; the setting reaction produces a strong, durable material for posterior tooth restoration; concerns about mercury exposure, esthetics, and tooth structure removal have led to declining use.
Plain English: Traditional silver fillings made by mixing metal powder with mercury — very durable and long-lasting, but declining in use due to appearance concerns and the global phase-down of mercury in dentistry.
Pediatric · Basic · Core · front-desk, pediatric
Clinical: Topical agent containing silver and fluoride ions used to arrest active dental caries, often in pediatric or special needs patients.
Plain English: A special medicine painted on cavities to help stop them from getting bigger, sometimes turning the spot dark.
Procedure · Basic · Core · student, front-desk
Clinical: Removal of a tooth that is fully erupted and visible in the oral cavity using elevators and forceps without surgical flap reflection.
Plain English: Taking out a visible tooth using instruments, without cutting the gums.
Digital Dentistry · Intermediate · Core · lab
Clinical: The high-temperature firing process that densifies pre-sintered zirconia after milling, achieving final strength and translucency.
Plain English: A high-heat step that hardens a milled zirconia restoration to its final strength.
Lab Process · Advanced · Core · student, lab
Clinical: The final densification firing of a zirconia restoration in a sintering furnace at 1450–1600°C; transforms the pre-sintered (soft, machinable) zirconia blank into a fully dense, extremely strong material (≥1000 MPa) with predictable 20–25% linear shrinkage; the final shape is calculated in CAD software with this shrinkage factor built in.
Plain English: The high-heat furnace firing that transforms a soft, milled zirconia restoration into a final, extremely hard material — the piece shrinks predictably during this process, which the computer design accounts for.
Lab Process · Intermediate · Core · student, lab
Clinical: A high-temperature furnace used to heat pre-sintered (soft-milled) zirconia to approximately 1450–1550°C, completing the crystalline transformation and densification process that gives the restoration its full strength and final dimensions after 20–25% shrinkage.
Plain English: The oven that transforms a chalky milled zirconia blank into the hard, dense, final-strength ceramic crown — the zirconia shrinks precisely to its intended size during this firing.
Oral Surgery · Advanced · Nice-to-know · student
Clinical: A surgical procedure that adds bone graft material to the maxillary sinus floor to increase vertical bone height for implant placement in the posterior maxilla.
Plain English: A procedure that adds bone to the upper jaw below the sinus so implants can be placed where bone is too thin.
Oral Surgery · Advanced · Core · student
Clinical: A surgical procedure that augments the volume of bone in the posterior maxilla by elevating the sinus membrane (Schneiderian membrane) and placing bone graft material beneath it; performed when insufficient bone height exists for implant placement due to pneumatization of the maxillary sinus.
Plain English: A procedure to build up bone under the sinus cavity in the upper jaw so there's enough height to place an implant — the sinus membrane is gently lifted and bone graft material is packed beneath it.
Oral Medicine · Advanced · Core · student, front-desk
Clinical: A systemic autoimmune disease characterized by lymphocytic infiltration and destruction of exocrine glands, primarily the salivary and lacrimal glands; primary Sjögren's: exocrine glands alone; secondary: associated with another autoimmune disease (RA, SLE); dental consequences: severe xerostomia and rampant cervical caries.
Plain English: An autoimmune disease that attacks the salivary and tear glands — severe dry mouth leads to rapid tooth decay throughout the mouth, particularly around the gum line.
Oral Medicine · Advanced · Core · student, front-desk
Clinical: An autoimmune exocrinopathy characterized by lymphocytic infiltration of the salivary and lacrimal glands, resulting in dry mouth (xerostomia) and dry eyes (keratoconjunctivitis sicca); dental manifestations include rampant cervical caries, oral candidiasis, and parotid gland enlargement.
Plain English: An autoimmune condition that attacks the saliva and tear glands — causing severe dry mouth that dramatically increases cavity risk, making dental care very challenging.
Orthodontics · Intermediate · Core · student
Clinical: A jaw size or position difference between the maxilla and mandible in the anteroposterior, vertical, or transverse plane that contributes to malocclusion; may be treated by growth modification in growing patients or orthognathic surgery in adults.
Plain English: When the upper and lower jaws are different sizes or positioned differently from each other, causing bite problems that go beyond just the teeth — it may require jaw surgery in adults.
Digital Dentistry · Intermediate · Nice-to-know · student, lab
Clinical: A resin-based 3D printing process using a laser to cure photopolymer resin layer by layer; produces very high-accuracy dental models.
Plain English: A 3D printing process that uses a laser to build detailed tooth models from liquid plastic, one thin layer at a time.
Procedure · Intermediate · Nice-to-know · student, front-desk
Clinical: A systematic process for planning the esthetic outcomes of a dental treatment by analyzing tooth proportions, shade, gingival architecture, and facial harmony.
Plain English: Planning the look of your smile by choosing the ideal shape, size, and color of your teeth before treatment.
Oral Surgery · Intermediate · Core · student, front-desk
Clinical: A bone grafting procedure performed at the time of tooth extraction in which the socket is filled with graft material (xenograft, allograft, or alloplast) and covered with a membrane or collagen plug to minimize alveolar bone resorption and maintain ridge dimensions for future implant placement.
Plain English: Placing a bone graft into a tooth socket immediately after extraction — it prevents the jaw from shrinking inward and keeps the bone volume needed for a future implant.
Endodontics · Intermediate · Nice-to-know · student
Clinical: The most commonly used endodontic irrigant; a bleach solution with strong antimicrobial and tissue-dissolving properties used to flush debris, dissolve organic tissue, and disinfect the root canal system during treatment.
Plain English: A bleach-based liquid used to clean and disinfect the inside of a root canal — it kills bacteria and dissolves infected tissue.
Prosthodontics · Intermediate · Core · student, lab, front-desk
Clinical: A resilient, compliant material placed on the tissue-bearing surface of a denture to cushion the mucosa from masticatory forces; particularly beneficial for patients with thin, painful ridges, recent oral surgery, or xerostomia; available as chairside temporary or laboratory-processed permanent soft liners.
Plain English: A soft, cushion-like layer added to the fitting surface of a denture — it absorbs chewing shock and makes the denture more comfortable for patients with sensitive or thin gum tissue.
Pediatric · Basic · Nice-to-know · front-desk, pediatric
Clinical: Orthodontic evaluation measuring available arch length versus tooth size to assess crowding or spacing in mixed dentition.
Plain English: Measuring if there is enough room in the jaw for all the new grown-up teeth.
Orthodontics · Intermediate · Core · student, lab
Clinical: The orthodontic phase in which residual spaces — from extractions, congenitally missing teeth, or generalized spacing — are closed by moving teeth together using sliding mechanics or loop mechanics.
Plain English: The stage of braces treatment where gaps between teeth are closed by gradually pulling the teeth together.
Orthodontics · Basic · Nice-to-know · student, lab, pediatric
Clinical: An appliance that preserves arch space for an unerupted permanent successor after premature loss of a primary tooth. Fixed types (band-and-loop, lingual arch, distal shoe) are preferred for compliance; removable types are an option in cooperative patients.
Plain English: A small device your dentist places to hold the gap open after a baby tooth is lost early, so the permanent tooth has room to come in.
Pediatric · Intermediate · Core · student, front-desk, pediatric
Clinical: The strategic use of space maintainers, space regainers, and serial extraction to preserve or recapture arch space after premature loss of primary teeth, preventing drifting of adjacent and erupting permanent teeth.
Plain English: A set of strategies — including appliances and sometimes early extractions — used to keep space available for permanent teeth when baby teeth are lost too early.
Orthodontics · Basic · Core · student, front-desk
Clinical: An excess of arch length relative to tooth mass, resulting in gaps or diastemas between multiple teeth; may be caused by small tooth size (microdontia), hypodontia, habits, or a large arch form.
Plain English: Gaps between multiple teeth due to having more room in the jaw than the teeth require — the opposite of crowding.
Specialty · Intermediate · Core · student, front-desk
Clinical: A framework for classifying dental instruments and devices by their risk of transmitting infection, determining the appropriate level of processing: Critical items (enter soft tissue or bone) require sterilization; Semi-critical items (contact mucous membranes) require high-level disinfection or sterilization; Non-critical items (contact intact skin) require low- to intermediate-level disinfection.
Plain English: The three-tier system for deciding how to clean dental instruments — whether to sterilize (items that enter tissue), disinfect at a high level (items that touch wet membranes), or just clean thoroughly (items that only touch skin).
Specialty · Intermediate · Core · student, front-desk, pediatric
Clinical: The branch of dentistry focused on individuals with intellectual disabilities, developmental disorders, neurological conditions, and complex medical/physical/behavioral needs that require modification of standard dental treatment approaches; includes patients with autism spectrum disorder, cerebral palsy, Down syndrome, and similar conditions.
Plain English: Dentistry adapted for patients with intellectual disabilities, autism, cerebral palsy, and similar conditions — these patients need modified communication, sensory accommodations, and often advanced behavior management techniques.
Specialty · Intermediate · Core · student, front-desk
Clinical: The use of standardized preparations of highly heat-resistant bacterial spores (Geobacillus stearothermophilus for steam autoclave) to confirm that the sterilization process achieved conditions sufficient to destroy all microbial life; the most reliable method of monitoring sterilizer efficacy.
Plain English: A test where spore-containing strips are run through the autoclave to verify it's actually killing everything — the gold standard for confirming that the sterilizer is working properly.
Lab Process · Advanced · Nice-to-know · lab
Clinical: The attachment of a wax sprue rod to a wax pattern prior to investing, creating a channel through which molten metal flows into the mold after wax burnout; sprue size, position, and angle affect the quality and completeness of the cast restoration.
Plain English: The wax stick attached to the wax pattern before it's embedded in investment material — it creates the channel through which molten metal enters the mold during casting.
Pathology · Advanced · Core · student, front-desk
Clinical: The most common oral malignancy (~90% of oral cancers); arises from the oral mucosal epithelium; most common sites: lateral and ventral tongue, floor of mouth; risk factors: tobacco, alcohol, HPV-16/18; often presents as a non-healing ulcer or white/red mucosal change.
Plain English: The most common type of mouth cancer — a malignant tumor of the oral lining that often appears as a persistent sore that won't heal; strongly linked to tobacco, alcohol, and HPV.
Pediatric · Basic · Core · front-desk, pediatric
Clinical: Prefabricated metal crown used to restore a primary tooth with extensive caries or following pulpotomy/pulpectomy.
Plain English: A silver cap placed on a baby tooth to make it strong again after big cavities or nerve treatment.
Pediatric · Basic · Core · student, pediatric
Clinical: A prefabricated full-coverage metal crown adapted and cemented over a primary molar after pulpotomy, extensive caries removal, or fracture repair; provides durable, cost-effective protection for a compromised primary tooth.
Plain English: A silver cap for a baby tooth — placed after a pulpotomy or when there's too much decay for a filling — it protects the tooth until it falls out naturally.
Specialty · Basic · Core · student, front-desk
Clinical: An infection control approach treating all patient blood, body fluids (except sweat), non-intact skin, and mucous membranes as potentially infectious, regardless of the patient's known or assumed infection status; the foundation of infection control in all healthcare settings.
Plain English: The infection control rule that treats every patient's blood and saliva as if it could be infectious — requiring gloves, masks, and other protection for every procedure, every time.
Specialty · Basic · Core · student, front-desk
Clinical: The minimum infection prevention practices applied to ALL patients regardless of presumed infectious status; based on the principle that blood, body fluids, and mucous membranes of all patients are potentially infectious; evolved from 'Universal Precautions' (blood-only) to include all body fluids.
Plain English: The baseline infection prevention approach in dentistry — treating every patient's blood and saliva as potentially infectious, regardless of their known health status, and protecting accordingly.
Specialty · Basic · Core · student, front-desk
Clinical: The process of destroying all forms of microbial life, including bacterial spores, on dental instruments; most commonly achieved by steam autoclave (121°C/15psi for 15–30 min or 132°C/30psi for 4 min); the highest level of infection control.
Plain English: The process of killing all microorganisms including resistant spores on dental instruments — the autoclave (steam under pressure) is the most common method used in dental offices.
Digital Dentistry · Intermediate · Nice-to-know · student, lab
Clinical: Standard Tessellation Language file; the universal 3D mesh format used to exchange intraoral scan data and CAD designs between dental software systems.
Plain English: A digital file format that contains the 3D shape of your teeth so the lab can design and make your restoration.
Procedure · Intermediate · Nice-to-know · student, front-desk
Clinical: Plaster or stone diagnostic casts of a patient's dental arches used for treatment planning, record keeping, and appliance fabrication reference.
Plain English: Plaster copies of your teeth used to plan your treatment and make dental appliances.
Anatomy · Intermediate · Core · student
Clinical: The second largest major salivary gland, located in the submandibular triangle below the mandible; produces both serous and mucous (mixed) saliva; secretions delivered via Wharton's duct, which opens at the sublingual caruncle (papilla) beside the lingual frenum.
Plain English: A saliva gland under the lower jaw producing a mix of thin and thick saliva — its duct (Wharton's duct) runs up to the floor of the mouth and opens just behind the lower front teeth.
Pediatric · Basic · Nice-to-know · front-desk, pediatric
Clinical: Dental evacuation device used to remove saliva, water, and debris from the mouth during treatment.
Plain English: A little vacuum that 'drinks up the water' and keeps the mouth dry.
Anatomy · Intermediate · Core · student
Clinical: Three branches of the maxillary nerve (V2) that supply the maxillary teeth: Anterior Superior Alveolar (ASA) — incisors and canine; Middle Superior Alveolar (MSA) — premolars and mesiobuccal root of first molar (when present); Posterior Superior Alveolar (PSA) — molars (except mesiobuccal root of first molar).
Plain English: The three nerve branches that supply feeling to all the upper teeth — front teeth nerve, premolar nerve, and back molar nerve — each targeted by different injections.
Pathology · Intermediate · Core · student, pediatric, radiology
Clinical: An extra tooth or tooth-like structure beyond the normal complement; the most common supernumerary is the mesiodens (located between the maxillary central incisors), which can cause eruption problems and midline diastema.
Plain English: An extra tooth that grows beyond the normal number — often found between the upper front teeth or in the back of the mouth, sometimes hidden in the bone.
Periodontics · Intermediate · Core · student
Clinical: The over-eruption of a tooth beyond the occlusal plane when the opposing tooth is missing, resulting in lengthened clinical crown, reduced restorative space, altered occlusal plane, and bone that moves coronally with the tooth.
Plain English: When a tooth slowly drifts downward (or upward) because there's no opposing tooth to stop it — it can block space needed for an implant or bridge and complicate treatment.
Specialty · Basic · Core · student, front-desk
Clinical: The process of cleaning and disinfecting clinical contact surfaces (light handles, chair controls, bracket tray, headrest) between patients using an EPA-registered hospital-grade disinfectant; uses a two-step spray-wipe-spray technique: first wipe to remove debris, second application to achieve contact time.
Plain English: Cleaning and disinfecting all surfaces the dental team touches during treatment between patients — a two-step wipe-apply-wait process using hospital-grade disinfectant.
Procedure · Basic · Core · student, front-desk
Clinical: Removal of a tooth requiring surgical flap reflection, bone removal, and/or sectioning of the tooth.
Plain English: Removing a tooth that requires cutting the gum and sometimes bone around it.
Digital Dentistry · Intermediate · Core · student, lab
Clinical: A patient-specific CAD/CAM-fabricated template derived from CBCT data and digital impressions that precisely controls the position, angulation, and depth of implant osteotomy drills during surgery; ensures the implant is placed exactly where the prosthetic plan requires.
Plain English: A custom-made drill guide fabricated from your CT scan and digital impressions that snaps over the teeth or gums during surgery — it ensures the implant is placed in exactly the right spot and angle for the planned crown.
Lab Process · Intermediate · Core · student, lab
Clinical: A precision instrument used in the dental laboratory to determine the path of insertion of a removable partial denture, identify undercuts, and plan the design of clasps, rests, and connectors.
Plain English: A specialized tool used in the lab to map out the best direction for a partial denture to go in and out of your mouth without rocking.
Lab Process · Advanced · Core · student, lab
Clinical: A laboratory instrument used in removable partial denture design to analyze the contours of abutment teeth on a cast, determine the height of contour, locate undercuts, and establish the path of insertion and removal of the prosthesis.
Plain English: A lab tool that analyzes plaster models to find the right angles and undercuts on teeth before designing a partial denture — it determines exactly how the denture will hook onto and slide onto the teeth.
Insurance · Intermediate · Core · student, front-desk
Clinical: A fee schedule used by some insurance plans that lists a fixed maximum dollar amount the insurer will pay per procedure code, regardless of the dentist's actual fee; patient pays the difference.
Plain English: A chart your insurance uses that sets the maximum amount it will pay for each type of dental treatment — you pay anything above that amount.
Orthodontics · Advanced · Core · student
Clinical: A miniature titanium screw placed directly into alveolar bone to serve as a fixed anchorage point for tooth movement, bypassing the need for patient cooperation with headgear.
Plain English: A tiny screw placed in the gum bone to act as an anchor for moving teeth — it's temporary and removed once treatment is done.
Pathology · Intermediate · Nice-to-know · student, radiology
Clinical: A developmental anomaly of multirooted teeth in which the pulp chamber is greatly enlarged vertically with apical displacement of the furcation, making the teeth appear bull-like; associated with Klinefelter syndrome and other systemic conditions.
Plain English: An unusual tooth shape where the pulp chamber (the space inside the tooth) is much larger than normal, with the roots appearing shorter — it can complicate root canal treatment.
Pediatric · Basic · Nice-to-know · front-desk, pediatric
Clinical: Period during which primary or permanent teeth are erupting through the gingiva, sometimes associated with local discomfort.
Plain English: When new teeth are pushing through the gums, which can make babies drool and chew more and feel fussy.
Digital Dentistry · Intermediate · Nice-to-know · student, front-desk
Clinical: The use of telecommunications technology (synchronous video, asynchronous photo review, or remote monitoring) to deliver dental care, patient education, consultation, and triage; allows assessment of patients in remote areas, post-operative monitoring, and orthodontic progress tracking without in-person visits.
Plain English: Using video calls or photo sharing for dental consultations, checkups, or emergency triage — useful for patients who can't easily visit the office and for remote orthodontic check-ins.
Digital Dentistry · Intermediate · Core · student, front-desk
Clinical: The use of telecommunications technology to provide dental consultation, screening, education, and triage at a distance; modalities include store-and-forward (asynchronous photo/data transmission for remote review) and real-time (synchronous video consultation); expands dental access in rural, underserved, and institutional settings.
Plain English: Using video calls and digital photos to provide dental consultations remotely — useful for screening patients in nursing homes, rural areas, and schools without requiring an in-person visit.
Pediatric · Basic · Nice-to-know · front-desk, pediatric
Clinical: Behavior guidance technique in which the clinician verbally explains, demonstrates, and then performs a procedure on the patient.
Plain English: A way of helping kids feel safe by explaining, showing on a model or finger, and then doing it gently in the mouth.
Anatomy · Intermediate · Core · student
Clinical: A large fan-shaped muscle of mastication originating from the temporal fossa and inserting on the coronoid process of the mandible; responsible for jaw closure and retrusion; tender to palpation in temporal headache associated with bruxism and TMD.
Plain English: A large fan-shaped chewing muscle on the side of the skull — it raises the jaw and pulls it back, and is a common source of headache-like pain in patients who clench or grind.
Orthodontics · Intermediate · Core · student, lab
Clinical: A mini-implant (1.2–2.0mm diameter, 6–12mm length) inserted into the alveolar bone to provide a rigid anchorage point for orthodontic tooth movement without reciprocal movement; allows mechanics impossible with tooth-borne anchorage alone.
Plain English: A tiny screw placed into the jawbone temporarily during orthodontic treatment — it acts as a fixed anchor point, allowing specific teeth to be moved without pushing other teeth in the wrong direction.
Materials · Basic · Core · student, front-desk
Clinical: A low-strength luting agent used to provisionally seat crowns, bridges, and orthodontic bands to allow removal at a future appointment; provides adequate retention while allowing retrievability.
Plain English: A weak cement used to temporarily attach a crown or other restoration so the dentist can remove it easily at the next visit.
Lab Process · Basic · Core · student, lab, front-desk
Clinical: A short-term restoration fabricated from bis-acryl composite, PMMA, or polycarbonate that protects the prepared tooth, maintains space, restores esthetics and function, and preserves the gingival architecture between the preparation appointment and delivery of the definitive restoration.
Plain English: A temporary crown placed while the permanent crown is being made — it protects the prepared tooth, keeps the bite comfortable, and holds the space for several days to weeks.
Oral Medicine · Basic · Core · student, front-desk
Clinical: A broad category of musculoskeletal conditions affecting the temporomandibular joint, masticatory muscles, and associated structures; characterized by jaw pain, limited opening, joint sounds, and headache.
Plain English: A condition affecting the jaw joint and surrounding muscles that can cause jaw pain, clicking, difficulty opening your mouth wide, and headaches.
Anatomy · Basic · Nice-to-know · student
Clinical: The bilateral synovial hinge-and-glide joint connecting the condylar process of the mandible to the temporal bone of the skull.
Plain English: The jaw joint that lets you open, close, and move your mouth side to side.
Materials · Basic · Core · lab
Clinical: Pre-cut plastic sheets of various thicknesses and materials (PETG, polycarbonate, polyurethane) heated and formed over dental models to fabricate retainers, bleaching trays, and athletic guards.
Plain English: Thin plastic sheets used to make custom-fit trays, retainers, and mouthguards by molding them over a model of your teeth.
Anatomy · Basic · Core · student, front-desk
Clinical: The last molar in each quadrant (tooth #1, #16, #17, #32), commonly called wisdom teeth; frequently impacted due to insufficient arch space.
Plain English: Your wisdom teeth — the last teeth to come in, often in your late teens or early twenties.
Pediatric · Basic · Nice-to-know · front-desk, pediatric
Clinical: Repetitive non-nutritive sucking habit that may affect occlusion and jaw growth if it persists beyond early childhood.
Plain English: A long-lasting thumb or finger sucking habit that can move teeth and jaws over time.
Insurance · Intermediate · Nice-to-know · front-desk
Clinical: A requirement that claims be submitted to a plan within a specified time frame; failure to comply may result in denial for untimely submission.
Plain English: A rule that says claims must be sent in on time; if they are late, the insurance can refuse to pay.
Orthodontics · Intermediate · Core · student
Clinical: A tooth movement in which the crown moves in one direction while the root moves in the opposite direction, rotating the tooth around a fulcrum near the root apex; the most common initial tooth movement in orthodontics.
Plain English: Tilting a tooth so the top (crown) leans one way while the root goes the other — common in early stages of braces treatment.
Prosthodontics · Basic · Core · lab, front-desk
Clinical: A soft, viscoelastic lining material applied to the tissue surface of a removable denture to treat traumatized or inflamed tissue, improve adaptation, and record a functional impression of the edentulous ridge.
Plain English: A soft, temporary lining placed inside a denture to cushion and heal sore or irritated gum tissue before making or repairing a denture.
Materials · Advanced · Nice-to-know · student, lab
Clinical: A biocompatible, corrosion-resistant metallic element (Grade 4 commercially pure or Grade 5 Ti-6Al-4V alloy) used for dental implants, abutments, and frameworks.
Plain English: The strong, body-friendly metal used for dental implants and some prosthetic components.
Implant · Intermediate · Core · student, lab
Clinical: A small titanium component bonded to a zirconia or PEEK abutment or crown, creating a hybrid restoration that combines the biocompatibility of a titanium-implant interface with the esthetics of a tooth-colored suprastructure.
Plain English: A small metal base that connects to the implant while supporting a tooth-colored crown or abutment on top — combining the strength of metal at the implant connection with natural-looking ceramic above.
Oral Medicine · Intermediate · Core · student, front-desk
Clinical: A condition in which the mandibular condyle translates anterior to the articular eminence and cannot return to the glenoid fossa without assistance; presents as acute inability to close the mouth after wide opening, yawning, or dental treatment with wide opening.
Plain English: When the jaw joint pops completely out of position during wide opening and gets stuck — the patient cannot close their mouth and the jaw looks displaced to one side.
Oral Medicine · Intermediate · Core · student, front-desk
Clinical: A collective term for pain and dysfunction involving the temporomandibular joint, masticatory muscles, and associated structures; classified by the DC/TMD (Diagnostic Criteria for TMD) into joint disorders (disc displacement, degenerative joint disease) and muscle disorders (myalgia, myofascial pain).
Plain English: Pain or clicking in the jaw joint and surrounding muscles — it can cause jaw pain, headaches, limited opening, and clicking or locking of the joint.
Pediatric · Basic · Nice-to-know · student, front-desk, pediatric
Clinical: An orofacial myofunctional disorder in which the tongue presses against or between the anterior teeth during swallowing, speech, or at rest; a persistent tongue thrust can cause anterior open bite and proclination of the incisors.
Plain English: When the tongue pushes forward against or between the front teeth during swallowing — over time this pressure can push the teeth out of position and contribute to an open bite.
Pediatric · Intermediate · Core · student, front-desk, pediatric
Clinical: Complete displacement of a tooth out of its socket by trauma; a dental emergency — permanent teeth should be reimplanted as quickly as possible (within 30–60 minutes ideally) after gentle rinsing in saline or milk; primary teeth are not reimplanted.
Plain English: When a tooth is completely knocked out of the mouth — it's a dental emergency; a permanent tooth should be replanted right away (stored in milk, saliva, or saline), but baby teeth are not replanted.
Pathology · Intermediate · Core · student
Clinical: The irreversible loss of tooth structure by chemical dissolution from acids not associated with bacteria; caused by intrinsic acids (GERD, bulimia — erosion on palatal surfaces of upper teeth) or extrinsic acids (citrus, carbonated beverages, sports drinks); produces smooth, glossy surfaces.
Plain English: The chemical wearing away of enamel and dentin by non-bacterial acids — from acidic drinks, acid reflux, or eating disorders — creating smooth, glassy, thinned tooth surfaces.
Oral Medicine · Basic · Core · student, front-desk
Clinical: A short, sharp dental pain arising from exposed dentin in response to thermal, evaporative, tactile, osmotic, or chemical stimuli that cannot be ascribed to any other dental defect or pathology; caused by hydrodynamic movement of fluid in dentinal tubules (Brannstrom's hydrodynamic theory).
Plain English: A short, sharp pain triggered by cold, heat, sweets, or air on a tooth — caused by exposed root or thinned enamel allowing stimuli to reach the nerve through tiny channels in the dentin.
Procedure · Basic · Core · student, front-desk
Clinical: A cosmetic dental procedure using carbamide peroxide (10–22%) or hydrogen peroxide (6–40%) to oxidize chromogenic compounds within the enamel and dentin, lightening tooth color; available as in-office (power bleaching), custom tray take-home, or over-the-counter products.
Plain English: A cosmetic treatment that lightens tooth color using peroxide — available as a professional in-office treatment, take-home trays from the dentist, or over-the-counter strips.
Procedure · Basic · Core · student
Clinical: A high-concentration local anesthetic gel or solution (typically 20% benzocaine or 5% lidocaine) applied to the mucosa 1–2 minutes before needle insertion to anesthetize the superficial mucosal tissue and reduce the pain of injection.
Plain English: A numbing gel applied to the gum before the injection needle — it numbs the surface so the patient barely feels the needle going in.
Orthodontics · Intermediate · Nice-to-know · student, lab
Clinical: A force couple that produces labiolingual root movement; controlled by the bracket prescription (torque angle) and third-order bends in the archwire.
Plain English: A rotational force that moves the root of your tooth forward or backward while the crown stays in place.
Orthodontics · Intermediate · Core · student
Clinical: The moment of force that produces labiolingual (in-out) root movement of a tooth; built into the rectangular archwire-bracket slot system as a prescription angle difference; used to control the root position of anterior teeth during retraction and maintain proper axial inclination.
Plain English: The twisting force in orthodontic mechanics that tips a tooth's root inward or outward — it's built into the bracket and wire system to control how the root moves, not just the crown.
Pathology · Intermediate · Nice-to-know · student
Clinical: Bony exostosis occurring in the midline of the hard palate, usually benign and asymptomatic.
Plain English: A harmless extra bone bump in the middle of the roof of the mouth.
Pathology · Basic · Core · student, front-desk
Clinical: Benign bony exostoses (outgrowths) of the hard palate (torus palatinus) or lingual surface of the mandible in the premolar region bilaterally (torus mandibularis); developmental variations with no malignant potential; most prevalent in females and certain ethnic groups; usually require no treatment unless interfering with denture construction.
Plain English: Harmless extra bony lumps on the roof of the mouth or the inner surface of the lower jaw — very common, completely benign, and usually only need to be removed if they interfere with a denture.
Anatomy · Basic · Core · student
Clinical: The spongy, lattice-like inner cancellous bone surrounded by the cortical plates; contains the bone marrow, blood vessels, and hematopoietic stem cells; provides less resistance than cortical bone and is the primary source of osteogenic cells for bone healing and graft integration.
Plain English: The spongy, honeycomb-like bone inside the jaw — it's less dense than the hard outer shell and contains the marrow and blood supply that drives bone healing.
Orthodontics · Intermediate · Core · student, lab
Clinical: A fixed orthodontic appliance connecting maxillary first molars across the palate with a rigid or omega-looped wire; maintains or expands transverse molar width, prevents molar rotation, and provides anchorage; can be activated to constrict or expand the arch.
Plain English: A wire connecting the upper back molars across the roof of the mouth — it holds the molars from rotating or moving while other teeth are being moved during orthodontic treatment.
Pediatric · Intermediate · Core · student, front-desk, pediatric
Clinical: Damage to the teeth and supporting structures caused by trauma; classified by the International Association of Dental Traumatology (IADT) into fracture types (Ellis/Andreasen), luxation injuries, and avulsion; management depends on tooth type (primary vs. permanent) and classification.
Plain English: Injury to a tooth from a fall, blow, or accident — ranging from a small chip to the tooth being knocked completely out; how it's treated depends on the type and severity of injury.
Pathology · Intermediate · Nice-to-know · student
Clinical: Ulcer of the oral mucosa resulting from mechanical, thermal, or chemical injury, usually with a history of trauma.
Plain English: A sore in the mouth caused by biting, sharp foods, or other injury that usually heals after the cause is removed.
Specialty · Basic · Core · front-desk
Clinical: A dental team member who meets with patients after their examination to review diagnosed conditions, present the treatment plan, discuss insurance benefits and out-of-pocket costs, arrange payment plans, and schedule appointments; bridges the clinical and administrative sides of the practice.
Plain English: A team member who explains the treatment plan and costs to patients, handles insurance questions, sets up payment arrangements, and helps patients commit to needed care.
Specialty · Basic · Core · student, front-desk
Clinical: The structured communication of a patient's diagnosed conditions, proposed treatment options, sequence of care, estimated fees, insurance coverage, and timeline to the patient; should include alternatives and the consequences of no treatment to facilitate informed decision-making.
Plain English: The conversation where the dentist explains what dental problems were found, what treatment is recommended, what it costs, and what happens if it's not done — so the patient can make an informed decision.
Anatomy · Intermediate · Core · student
Clinical: The fifth cranial nerve and the primary sensory nerve of the face and oral cavity; divides into three branches: ophthalmic (V1), maxillary (V2), and mandibular (V3); V2 supplies the maxillary teeth and V3 supplies the mandibular teeth and provides motor innervation to the muscles of mastication.
Plain English: The main sensory nerve of the face and mouth — it has three branches, with the upper branch serving the upper jaw and the lower branch serving the lower jaw and muscles of chewing.
Anatomy · Intermediate · Core · student
Clinical: The fifth cranial nerve (CN V), the largest cranial nerve; primary sensory nerve of the face and oral cavity and motor nerve to the muscles of mastication; three divisions: V1 ophthalmic (forehead), V2 maxillary (upper jaw), V3 mandibular (lower jaw); the basis of all dental local anesthetic techniques.
Plain English: The main sensory nerve of the face and mouth — divided into three branches for the forehead, upper jaw, and lower jaw; all dental injections target specific branches of this nerve to achieve numbness.
Oral Medicine · Intermediate · Core · student, front-desk
Clinical: Reduced or restricted opening of the mandible, commonly caused by infection, inflammation, temporomandibular disorder, or radiation fibrosis.
Plain English: Difficulty opening your mouth fully — often caused by infection, inflammation, or jaw joint problems.
Lab Process · Basic · Core · lab, front-desk
Clinical: A clinical appointment at which a wax denture setup or framework is placed in the patient's mouth to verify esthetics, occlusion, midline, lip support, and phonetics before final processing.
Plain English: A fitting appointment where you try in a wax or metal version of your denture so we can check the appearance and bite before making the final one.
Procedure · Basic · Core · student, lab, front-desk
Clinical: A clinical appointment at which the patient evaluates an incomplete or wax version of the planned restoration — checking fit, esthetics, phonetics, and occlusion before the final material is processed; common for complete dentures (wax try-in), veneers (bisque bake try-in), and bridges.
Plain English: An appointment to evaluate a trial version of the restoration — checking how it looks, fits, and feels before it's finished — so any changes can be made before the final piece is delivered.
Lesion Descriptor · Basic · Nice-to-know · student
Clinical: General term for a swelling or mass; in pathology often used for a larger neoplastic or non-neoplastic growth.
Plain English: A larger mass or growth in the mouth that needs to be checked to see what it is.
Orthodontics · Advanced · Nice-to-know · student, lab
Clinical: A two-piece removable functional appliance with inclined acrylic bite blocks that reposition the mandible anteriorly to correct Class II malocclusion.
Plain English: A two-part removable device — one piece for each jaw — that trains your lower jaw to move forward to fix an overbite.
Insurance · Basic · Core · student, front-desk
Clinical: The fee that an insurance carrier determines to be usual (fee charged by that dentist), customary (fee charged by similar dentists in the area), and reasonable (justifiable given the complexity of the case); insurance companies often use the 80th or 90th percentile of surveyed fees.
Plain English: The 'standard' fee that an insurance company uses as its baseline for calculating how much it will pay — it may be less than what a dentist actually charges.
Lesion Descriptor · Basic · Nice-to-know · student
Clinical: Depressed lesion resulting from loss of surface epithelium extending into the underlying connective tissue.
Plain English: A sore in the mouth where the surface tissue is missing and the area looks deeper than the surrounding tissue.
Lesion Descriptor · Basic · Nice-to-know · student, radiology
Clinical: Radiographic or clinical term describing a lesion with a single compartment or cavity.
Plain English: Describes a lesion that looks like one single, round or oval space on an x-ray.
Anatomy · Basic · Core · student, front-desk
Clinical: The tooth numbering system used in the United States, assigning numbers 1–32 to permanent teeth (beginning with the upper right third molar) and letters A–T to primary teeth.
Plain English: The standard American system for labeling teeth with numbers 1–32.
Insurance · Intermediate · Nice-to-know · front-desk
Clinical: The amount paid for a service in a geographic area based on what providers usually charge for the same or similar service; often used to determine the plan's allowed amount.
Plain English: A typical or average fee your plan thinks is reasonable for a service in your area, used to decide how much it will pay.
Lab Process · Basic · Core · student, lab
Clinical: A thermoforming technique in which a heated plastic sheet is draped over a model and vacuum pressure draws it tightly to the surface to create retainers, bleaching trays, and other appliances.
Plain English: A method we use to make clear trays or retainers by heating a thin plastic sheet and pulling it snugly over a mold of your teeth.
Specialty · Intermediate · Core · student
Clinical: Agents added to local anesthetic solutions to constrict local blood vessels, reducing anesthetic absorption into the systemic circulation; extending duration and depth of anesthesia while reducing systemic toxicity; epinephrine (adrenaline) and levonordefrin (Neo-Cobefrin) are those used in dental cartridges.
Plain English: The ingredient in dental anesthetic that constricts blood vessels — it keeps the numbing medicine in the area longer, reduces bleeding, and prevents too much anesthetic from entering the bloodstream at once.
Prosthodontics · Intermediate · Core · student, lab
Clinical: A thin (0.3–0.7 mm) layer of ceramic or composite material bonded to the facial surface of a tooth to correct color, shape, or minor positional defects.
Plain English: A thin porcelain or composite shell bonded to the front of your tooth to improve its appearance.
Periodontics · Intermediate · Core · student, radiology
Clinical: A pattern of alveolar bone destruction in periodontal disease in which bone resorption occurs at an angle to the root surface, creating infrabony or angular defects that are deeper on one aspect of the tooth than another.
Plain English: An angled pattern of bone loss around a tooth where the bone is lost deeper on one side than the other — often a sign of more aggressive local disease and is visible on X-rays.
Prosthodontics · Advanced · Core · student, lab
Clinical: The facial height measured between two selected points (one on the nose and one on the chin) when the teeth or occlusal rims are in contact; establishing the correct VDO is fundamental to complete denture fabrication and full-mouth rehabilitation.
Plain English: The measurement of face height when the teeth are together — establishing the right jaw height is critical in making dentures and in rebuilding severely worn teeth.
Endodontics · Advanced · Core · student, radiology
Clinical: A longitudinal fracture of the root that runs parallel to the long axis of the tooth, typically originating in the root and propagating toward the crown; almost always requires extraction due to poor prognosis.
Plain English: A crack that runs along the length of a tooth's root — this is a serious problem that usually means the tooth needs to be removed.
Lesion Descriptor · Basic · Nice-to-know · student
Clinical: Small, circumscribed, fluid-filled elevation of the mucosa or skin usually less than 1 cm in diameter.
Plain English: A tiny blister filled with clear fluid.
Anatomy · Basic · Nice-to-know · student, lab
Clinical: The space between the lips or cheeks and the teeth and gingiva; the depth of the vestibule (sulcus depth) is an important consideration in complete denture border extension and flap design in surgery.
Plain English: The space between your lips or cheeks and your teeth and gums — like the 'entryway' to the rest of your mouth.
Digital Dentistry · Advanced · Nice-to-know · student, lab
Clinical: Software that simulates jaw movements and occlusal contacts using patient-specific kinematic data to verify restoration occlusion before milling.
Plain English: A digital tool that simulates how your jaw moves to check that a crown or bridge will fit perfectly before it's made.
Insurance · Basic · Core · student, front-desk
Clinical: A specified period after a dental insurance policy begins during which certain benefits are not yet available; commonly applied to major services such as crowns, dentures, or orthodontics.
Plain English: The time you have to wait after getting dental insurance before certain treatments — like crowns or dentures — are covered by the plan.
Insurance · Basic · Core · front-desk
Clinical: A specified period of time (commonly 6–12 months) after enrolling in a dental insurance plan during which certain categories of benefits (usually major services like crowns, bridges, and implants) are not covered.
Plain English: The period after signing up for dental insurance during which major services like crowns and bridges aren't covered — usually 6 to 12 months.
Preventive · Intermediate · Core · student, front-desk
Clinical: The controlled adjustment of fluoride concentration in community water supplies to the optimal level (0.7 ppm in the US since 2015) to reduce dental caries prevalence; considered one of the ten great public health achievements of the 20th century by the CDC; reduces caries by ~25% in children and adults.
Plain English: Adding a controlled amount of fluoride to public water supplies to prevent cavities — endorsed by virtually every major health organization and considered one of the greatest public health achievements of the last century.
Lab Process · Basic · Core · student, lab
Clinical: A precise replica of the planned restoration sculpted in dental wax on the die (for castings) or used as a pressing template (for pressed ceramics); every detail of the final restoration — contour, occlusion, contact areas, margins — is first established in wax before being converted to the final material.
Plain English: The wax version of a crown or restoration that the lab technician sculpts first — it's the blueprint used to make the final metal casting or pressed ceramic piece.
Prosthodontics · Intermediate · Nice-to-know · student, lab
Clinical: A diagnostic or fabrication procedure in which wax is added to stone or resin dies to simulate the planned restorations and verify esthetics, function, and occlusion.
Plain English: A wax model of your planned new teeth built on a study cast to preview the final result.
Procedure · Basic · Core · student
Clinical: A small triangular piece of wood or plastic inserted into the interproximal embrasure at the gingival level during Class II composite or amalgam restorations; seals the gingival margin, pre-displaces the gingival tissue, and holds the matrix band tightly against the tooth to prevent gingival flash.
Plain English: A small wedge pushed between teeth near the gum line when placing a filling between two teeth — it holds the matrix band tight and prevents the filling material from squirting under the gum.
Lesion Descriptor · Basic · Nice-to-know · student
Clinical: Transient, edematous, elevated lesion often associated with allergic reactions; uncommon as a primary oral descriptor.
Plain English: A soft, puffy raised area that comes and goes, usually with allergies or irritation.
Pathology · Basic · Core · student, pediatric
Clinical: An early, non-cavitated carious lesion presenting as an opaque white area on enamel caused by subsurface demineralization; a common complication of fixed orthodontic treatment due to plaque accumulation around brackets.
Plain English: A chalky white patch on a tooth that signals the start of a cavity — the enamel is weakening but hasn't broken through yet.
Endodontics · Intermediate · Core · student
Clinical: The distance from a reference point on the crown of the tooth to the point at which root canal instrumentation and obturation should terminate, typically 0.5–1mm short of the radiographic apex.
Plain English: The measured length from the top of the tooth to the tip of the root, used to make sure we clean and fill the root canal to exactly the right depth.
Oral Surgery · Intermediate · Core · student
Clinical: Bone graft material derived from an animal source, most commonly bovine (cow) or porcine (pig) bone that has been processed to remove all organic components while preserving the mineral scaffold; acts as an osteoconductive framework for new bone formation.
Plain English: Bone graft material made from animal bone (usually cow) that has been sterilized and processed — it provides a scaffold that your own bone can grow into.
Oral Medicine · Intermediate · Core · student, front-desk
Clinical: The subjective complaint of dry mouth, resulting from reduced or absent saliva flow due to medications, radiation, systemic disease, or dehydration.
Plain English: Dry mouth — a condition where your mouth doesn't produce enough saliva.
Oral Medicine · Intermediate · Core · student, front-desk
Clinical: Dry mouth caused by medication side effects — one of the most common causes of xerostomia; hundreds of drugs reduce salivary flow, including antidepressants, antihypertensives, antihistamines, diuretics, and antipsychotics.
Plain English: A dry mouth caused by medications — hundreds of common drugs reduce saliva production, increasing the risk of cavities, difficulty swallowing, and oral infections.
Materials · Intermediate · Nice-to-know · student, lab
Clinical: A dental material formed by mixing zinc oxide powder with eugenol (oil of cloves); used as a temporary cement, base, sedative dressing, and impression paste due to its obtundent and antimicrobial properties.
Plain English: A soothing temporary material made from zinc oxide and clove oil, used to calm an irritated tooth or hold a temporary crown in place.
Materials · Intermediate · Nice-to-know · student, lab
Clinical: One of the oldest dental luting cements, composed of zinc oxide powder and phosphoric acid liquid; sets by an acid-base reaction producing an exothermic reaction; high compressive strength but no adhesion to tooth structure; historically used for metal crowns and orthodontic bands.
Plain English: A classic dental cement used to permanently attach metal crowns and orthodontic bands — it's very strong under pressure but doesn't chemically bond to teeth, so it relies on the fit of the restoration.
Materials · Intermediate · Core · student, lab
Clinical: Zirconium dioxide (ZrO2) ceramic; the dominant CAD/CAM milling material in modern dental labs due to high flexural strength, biocompatibility, and tooth-colored esthetics.
Plain English: A very strong tooth-colored ceramic material used to make crowns, bridges, and implant parts.
Implant · Advanced · Core · student, lab
Clinical: An implant abutment fabricated from high-strength zirconia ceramic; offers superior esthetics compared to titanium abutments (no gray metal show-through at the gingival margin) and is preferred in the esthetic zone with thin gingival biotypes.
Plain English: A tooth-colored ceramic connector between an implant and a crown — preferred for front teeth where metal showing through the gums could affect the appearance.
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