상악 골신장술과 하악 상행지시상분할술을 이용한 편측 상하악골 수직 증가술: 증례보고
Unilateral bimaxillary vertical elongation by maxillary distraction osteogenesis and mandibular sagittal split ramus osteotomy: a case report
정영언, 양훈주, 황순정,
소속 상세정보
정영언 ( Jung Young-Eun ) - 서울대학교 치의학대학원 구강악안면외과학교실
양훈주 ( Yang Hoon-Joo ) - 서울대학교 치의학대학원 구강악안면외과학교실
황순정 ( Hwang Soon-Jung ) - 서울대학교 치의학대학원 구강악안면외과학교실
KMID : 0355620110370060539
Abstract
Maxillary canting and vertical shortening of the unilateral mandibular ramus height is common in cases of severe facial asymmetry. Normally, mandibular distraction osteogenesis (DO) with horizontal osteotomy at the ascending ramus is used for vertical lengthening of the mandibular ramus to correct facial asymmetry with an absolute shortened ascending ramus. In this case report, vertical lengthening of the ascending ramus was performed successfully with unilateral DO and sagittal split ramus osteotomy (SSRO), where the posterior part of the distal segment can be distracted simultaneously in an inferior direction with maxillary DO, resulting in a lengthening of the medial pterygoid muscle. This case describes the acquired unilateral mandibular hypoplasia caused by a condylar fracture at an early age, which resulted in abnormal mandibular development that ultimately caused severe facial trismus. The treatment of this case included two-stage surgery consisting of bimaxillary distraction osteogenesis for gradual lengthening of the unilateral facial height followed by secondary orthognathic surgery to correct the transverse asymmetry. At the one year follow-up after SSRO, the vertical length was maintained without complications.
키워드
Facial asymmetry;Distraction osteogenesis;Orthognathic surgery;Mandibular fracture
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