| Field | Value |
|---|---|
| ID | OA-0334 |
| Type | finishing |
| Category | finishing |
| Fixed/removable | removable |
| Primary function | final tooth positioning; bite settling; post-braces refinement |
| Malocclusion target | minor residual discrepancies at end of orthodontic treatment |
| Inventor | various; popularized by Kesling 1945 |
| First year | 1945 |
| Period | historical / current |
| Status | current (limited — largely superseded by clear aligners) |
| Material | rubber, silicone, vinyl, or urethane |
| Movement capacity | < 1 mm refinement |
| Uses TADs | no |
The tooth positioner is a full-arch resilient appliance fabricated over a modified diagnostic setup (the technician manually repositions teeth in the plaster cast to the ideal final position). The positioner encapsulates both arches simultaneously, and when the patient bites into it, the resilient material's elastic deformation guides the teeth toward the planned ideal position. Worn 2–4 hours daily and during sleep at the end of orthodontic treatment, the positioner can produce minor tooth movements of < 1 mm and allow the occlusion to settle into full Class I intercuspation. It was the primary finishing tool before clear aligner therapy — today it is less common but still used by orthodontists who value the "whole-arch settling" concept.
The positioner is made at slightly different positions than the current tooth positions — each tooth in the setup is moved to its ideal final location before the appliance is fabricated. The resilient material (rubber, vinyl, urethane) is elastic and tries to return to its fabricated form. When the patient bites into the positioner, the material exerts gentle forces on all teeth simultaneously, guiding them toward the planned positions. The biting force of the elevator muscles (masseter, temporalis) is harnessed by the positioner to create active tooth movement — when the patient "chews" on the positioner, the cyclic biting generates the movement forces.
End-of-treatment tooth position refinement (minor residual rotations, tip discrepancies); bite settling and final Class I intercuspation; cases where fixed appliance removal leaves teeth slightly short of the planned positions; orthodontists who prefer a finishing tool before final retention; digital positioner workflow where the setup is done virtually (growing use in digital practices).
Very limited tooth movement capacity (< 1 mm) — cannot correct significant residual malocclusion. Full-arch simultaneous coverage makes it bulky and harder to wear than a retainer or aligner. Requires patient biting cooperation (passive wear without biting provides minimal movement). Less used today because clear aligners handle minor refinements more precisely and comfortably.
positions)
processed over the setup
single piece)
The diagnostic setup is the most time-consuming step — each tooth on the model must be individually cut free and repositioned in the ideal position. Acrylic, plaster, or wax is used to hold the repositioned teeth. The resilient material is then thermoformed or molded over the setup. The material must have the right durometer (hardness) — too soft provides no force; too hard prevents the patient from biting into it. CFL offers the Positioner — a competitive price for a labor-intensive appliance that requires a diagnostic setup.
Appliances.
milled model.
without full-arch coverage.
alternative.
PMC 2013](https://pmc.ncbi.nlm.nih.gov/articles/PMC3783768/)
Ordont](https://ordont.specialtyappliances.com/product/vinyl-positioner/)
US](https://orthopracticeus.com/digital-positioners/)
digital workflow, business notes.