| labiolingual appliance | An orthodontic appliance that consists of a maxillary labial arch wire and a mandibular lingual arch wire. (05 Mar 2000) |
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| light wire appliance | An orthodontic appliance utilizing small gauge labial wires with expansion and contraction loops formed into it and attached to bands fitted to individual teeth; sometimes called Begg light wire differential force technique. (05 Mar 2000) |