口内外联合入路小切口下颌角肥大弧形截骨术

目的 探索一种简便、安全、有效的下颌角肥大截骨术。方法 通过小切口经口内外联合入路对下颌角肥大患者行下颌角肥大弧形截骨整复术共20例。其中对咬肌肥大者同时行部分咬肌削薄术5例，对脸颊过度丰满者行颊脂垫部分去除术3例，伴小颌畸形者行颏成形术3例，单纯下颌角肥大弧形截骨术9例。结果 对20例行弧形截骨整复术患者随访6个月至6年，满意率达95%。结论 口内外联合入路的小切口下颌角肥大弧形截骨整复术，操作简易，截骨方便，易控制截骨量，并发症少，恢复快，易于推广。

Curved-osteotomy for prominent mandibular angle through intra- and extra-oral approach with a small incision

Objective To study a simple, safe and effective way in correction of prominent mandibular angle. Methods Curved osteotomy was employed for prominent mandibular angle through intra and extra oral approach with a small incision in 20 cases.Partial masseter resection was performed simutaneously in 5 cases with masseter hypertrophy, buccal fat pads were resected in 3 cases with broad faces, and genioplasty were performed in 3 cases with micrognathia. Nine cases only suffering from prominent mandibular angle were underwent curved osteotomy reconstruction. Results A series of 20 cases was followed up from six months to six years, in which 95 % was satisfactory.Conclusion The advantages of this method are simple, safe and symmetric with better result. It is easy to dissect under periosteum and perform curved osteotomy with less complication, quick recovery, and better contouring.