FIELD: medicine; orthodontia. SUBSTANCE: orthodontic apparatus has orthodontic rings for canine teeth (premolar teeth) and first permanent molars secured rigidly and coupled by tie-rods with Biderman dilating screw. Screw axis is positioned sagitally, and cut passes transversely. Catches for flexible connecting rod are secured on vestibular surface of canine teeth rings. Connecting rod passes behind palate surfaces of front teeth. Lip pellet is also secured on vestibular surface of rings. EFFECT: reduced time of treatment, convenience in use. 2 cl, 1 dwg, 1 ex
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Authors
Dates
1999-02-10—Published
1998-06-11—Filed