Orthodontic Retainers

**Definition:** Orthodontic appliances, fixed or removable, used to maintain teeth in corrected positions during the period of functional adaptation following corrective treatment. These appliances are also used to maintain the positions of the teeth and jaws gained by orthodontic procedures. (From Zwemer, Boucher's Clinical Dental Terminology, 4th ed, p263)

**Tree numbers:** - E06.658.453.637

**Synonyms:** - Retainers, Orthodontic