상악 좌측 측절치 결손을 동반한 골격성 III급 부정교합 환자의 선수술 치험례
Surgery-First Orthognathic Treatment in Class III Patient with Congenital Missing of Unilateral Maxillary Lateral Incisor
임희진, 이윤진, 국윤아, 김윤지,
소속 상세정보
임희진 ( Lim Hee-Jin ) - 가톨릭대학교 서울성모병원 치과교정과
이윤진 ( Lee Yoon-Jin ) - 가톨릭대학교 서울성모병원 치과교정과
국윤아 ( Kook Yoon-Ah ) - 가톨릭대학교 서울성모병원 치과교정과
김윤지 ( Kim Yoon-Ji ) - 가톨릭대학교 서울성모병원 치과교정과
Abstract
This case report describes a surgery-first orthognathic treatment of a skeletal Class III patient with congenital missing
of a maxillary lateral incisor. A 24-year-old male presented with a chief complaint of mandibular prognathism. Clinical
examination showed concave facial profile with moderate crowding. Intraorally, he exhibited both Class III molar
relationship, mild crowding in both arches, and 3.0 mm negative overjet. The maxillary dental midline was deviated 3.0
mm to the left, caused by congenital missing of the maxillary left lateral incisor. The cephalometric analysis showed
skeletal Class III malocclusion with a hyperdivergent pattern. For skeletal overcorrection of mandibular prognathism
and asymmtery, bilateral sagittal split ramus osteotomy was performed with surgery-first approach. To correct
the maxillary midline deviation, maxillary right second premolar was extracted. Maxillary left lateral incisor was
substituted with the canine by orthodontic space closure. With careful pre-operative orthodontic planning, surgery-first
orthognathic treatment was successfully treated with satisfying esthetics.
키워드
Surgery-first approach; Minimal presurgical orthodontics; Class III malocclusion; Congenital missing; Canine substitution
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