自体骨屑颏成形术

目的探索治疗下颌角肥大伴颏畸形时隆颏的新方法。方法对15例下颌角肥大患者，在磨削去骨同期，应用所磨削的骨屑植入颏部．颏成形塑形后石膏托固定改善下颌整体形态。结果15例术后随访6月-2年：12例患者表示满意；1例术后10d要求改变成形的颏部形状，调整后满意；2例分别于术后18、21d时因外力使颏部变形，调整后效果满意。结论该手术利用自体骨屑移植无排斥反应，并发症少；易塑形，与受骨融合快，美容效果理想。

Genioplasty with morselized autologous bone graft

Objective To investigate a new method of genioplasty for treatment of a prominent mandibular angle with mandibular malformation. Methods According to the different types of the mandible, the prominent mandibular angle was grinded with the masseter muscle kept intact. Autologous micromorselized bone of the grinded mandibular angle was collected and implanted into the chin for augmentation mentoplasty, and the chin was fixed with gypsum after operation. Results Fifteen patients receiving the surgery were followed up for 6 -12 months, and satisfactory effects were achieved in 12 patients. One patient requested modification of the shape of the chin 10 days after the operation, and another two sustained chin distortion due to extemal forces and underwent subsequent shape adjustment of the chin. Conclusion The procedure described avoids graft rejection and causes less complications for genioplasty with easy moulding and satisfactory outcome.