| Field | Value |
|---|---|
| ID | OA-0162 |
| Type | occlusal |
| Category | occlusal |
| Fixed/removable | removable (standard) or fixed |
| Primary function | deep overbite correction; bite opening; disarticulation |
| Malocclusion target | excessive overbite (deep bite); anterior deep bite |
| Inventor | various |
| First year | early 20th century |
| Period | historical / current |
| Status | current |
| Uses TADs | no |
An anterior bite plate is an acrylic appliance (removable or fixed) that covers the upper anterior teeth and creates a flat acrylic shelf that the lower incisors contact when the patient bites. By preventing posterior tooth contact (disarticulation), the bite plate allows the posterior teeth to erupt freely, thereby opening the bite over time. This is the fundamental mechanism for correcting deep overbite: unopposed posterior teeth erupt and the vertical dimension of occlusion increases. Simultaneously, the anterior incisal contact inhibits over-eruption of the upper anteriors. The bite plate is one of the oldest orthodontic tools and remains in use both as a standalone corrective appliance and as a component integrated into other appliances (Activator, removable retainer with bite plate, ACCO).
When the patient bites into the plate, only the lower incisors touch the acrylic shelf — all posterior teeth are disarticulated (separated 2–3 mm or more). With posterior teeth free of contact, alveolar bone and teeth erupt vertically until contact is re-established. Simultaneously, the alveolar bone supporting the posterior dentition increases in height. Over months of wear, the posterior vertical dimension increases and the overbite reduces. The bite plate does not directly intrude the upper anteriors (which would require attachments); instead it primarily extrudes the posteriors and establishes a new occlusal equilibrium at a reduced overbite.
Excessive deep overbite (> 4 mm or covering lower incisors entirely); deep overbite combined with a normal or deficient vertical face height (brachyfacial or normodivergent patients); overbite correction as part of phase I or comprehensive treatment; functional bruxism-related bite opening needs; cases where posterior eruption is the therapeutic goal (as opposed to anterior intrusion, which requires fixed mechanics and TADs in severe cases). Often combined with upper plate and other functional components.
Not appropriate for hyperdivergent (high-angle) patients — posterior eruption from the bite plate further increases lower anterior face height, worsening the vertical relationship. Compliance-dependent (removable version). Not effective as a standalone appliance for severe deep bite requiring true intrusion of the upper incisors. The acrylic shelf must be flat and level — an uneven surface creates asymmetric forces.
and extending to contact the incisal edges of the lower incisors
upper incisors using composite (no bands/clasps)
The bite shelf must be articulated against the lower model to verify even contact on all lower incisors and the correct posterior opening. An uneven shelf creates tipping forces rather than even disarticulation. Acrylic should be 2–3 mm thick at the shelf for durability. For fixed bite plates (bonded), the lingual acrylic pads are bonded with composite to the upper incisors — this requires the lab to provide blocks that the clinician bonds chairside. CFL's "Clear Fusion Retainer" under OA-0162 appears to be a thermoformed or hybrid retainer/bite plate; the bite plate function may be incorporated into various combination appliances.
shelf; most common.
reduction.
(Activator) — the monobloc has bite plate function built in.
opening.
Insights](https://scienceinsights.org/how-does-a-bite-plate-work-in-orthodontics/)
Group](https://orthodonticresource.com/product/fixed-anterior-bite-plate/)
Orthodontics](https://textbookorthodontics.com/orthodonticblog/understanding-the-importance-of-anterior-bite-plates-in-overbite-correction)
fabrication, business notes.