| orthodontic retainers | 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. (12 Dec 1998) |
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| lingual retainers | <dentistry> A variation of the lingual arch going from cuspids to cuspid. (08 Jan 1998) |