| Field | Value |
|---|---|
| ID | OA-0316 |
| Type | retention |
| Category | retention |
| Fixed/removable | removable (standard) or fixed (fixed bite plate variant) |
| Primary function | tooth position retention; bite plate function; post-treatment stability |
| Malocclusion target | post-treatment relapse; bite opening (bite plate variants) |
| Inventor | various |
| First year | mid-20th century |
| Period | historical / current |
| Status | current |
| Uses TADs | no |
The acrylic plate retainer is a broad category encompassing PMMA-based removable retention appliances with varying numbers of wire clasps (Adams clasps, ball clasps) and optional bite plate function. CFL's catalog shows plate retainers in tiers by clasp count (2K = 2 clasps, 3K, 4K, 6K) and design variants (fixed, with Adams clasps, buccal clasps, feeding plate). Upper and lower versions exist. The basic design is a heat-cured or pressure-cured PMMA plate contoured to the palate or lingual surface, with wire components for retention and occasional anterior coverage for bite opening (the "bite plate" function). This is one of CFL's highest-SKU-count product categories, reflecting the wide variety of clinical applications for the basic plate design.
The acrylic plate maintains tooth positions through close adaptation to the lingual surfaces. Wire clasps provide retention force to prevent the appliance from being displaced by tissue or tongue pressure. In bite plate variants, the anterior acrylic shelf contacts the lower incisors and prevents posterior occlusion — allowing posterior eruption and bite opening (same mechanism as Bite plate). The plate itself does not move teeth unless active elements (springs, screws) are incorporated.
Post-treatment retention for upper or lower arch; bite plate function to open deep bite; patients transitioning from fixed appliances; cases where additional anterior contact control is needed during retention; feeding plate function for infants with cleft palate (specialized variant); flexible retention management where clasp numbers and design are adjusted per case.
Compliance-dependent. Bite plate variants may open the bite in high-angle (hyperdivergent) patients — contraindicated for those cases. Clasp count determines retention strength — 2-clasp versions (2K) provide less retention than 6-clasp versions (6K). Fixed bite plate variant removes compliance issue but is permanent until removed by the clinician.
posterior teeth
(no clasps)
feeding support
Clasp count and placement must match the prescription. The acrylic must be processed evenly without porosity — bubbles weaken the plate and shorten its life. Anterior bite shelf must be articulated against the lower model for even incisal contact. Fixed bite plate variant is bonded chairside; the lab provides the acrylic pads pre-formed to the lingual surfaces. CFL tiered pricing: Plate 2K 3K 4K, 6K ; Fixed Bite Plate; Feeding Plate.
.
Technologies](https://www.greatlakesdentaltech.com/media/wysiwyg/resources/Hawley-Retainer-Technique.pdf)
IJODR](https://ijodr.com/archive/volume/10/issue/2/article/5012)
Group](https://orthodonticresource.com/product/fixed-anterior-bite-plate/)
function, feeding plate, business notes.