Palatal cribresearched

Quick facts

Field	Value
ID	OA-0158
Type	habit_appliance
Category	habit_appliance
Status	researched

Overview

OA-0158 is a palatal crib variant entry. The palatal crib is a fixed or removable appliance with wire elements behind the upper anterior teeth that act as a barrier to tongue thrusting or finger/thumb sucking. For full research on mechanism, fixed vs. removable designs, wire specifications, fabrication notes, and CFL pricing, see:

→ Tongue crib Tongue crib

CFL's Palatal Crib (listed under OA-0156 Space Maintenance subgroup) is the standard version; the custom fixed tongue guard at is the premium fixed variant.

Common variants & modifications

• Fixed palatal crib: soldered to TPA on molar bands; no patient

removal; maximum compliance

• Removable palatal crib: embedded in acrylic baseplate with Adams

clasps; patient can remove for hygiene

• Crib + expansion screw (Dillingham combination expansion/habit appliance): addresses

co-occurring maxillary constriction and tongue thrust simultaneously

• Hay rake (Upper Hay Rake habit appliance): escalated variant with pointed

wire spurs for more aggressive deterrence

• Modified crib (Upper tongue crib (modified)): wider lateral

coverage to prevent tongue from working around standard crib

Sources

• [Tongue Crib and Habit Appliances — AAPD Reference

Manual](https://www.aapd.org/research/oral-health-policies--recommendations/management-of-the-developing-dentition/)

• Fixed vs Removable Palatal Cribs — JCO
• [Tongue Thrust Correction: Appliance Review — Angle

Orthodontist](https://meridian.allenpress.com/angle-orthodontist)

• [Habit Appliances in Pediatric Orthodontics — Proffit, Contemporary

Orthodontics 6th ed.](https://www.elsevier.com)

Research log

• 2026-06-10 — page scaffolded from Master Appliance Database.
• 2026-06-09 — cross-referenced to OA-0156.