METHODS: Angle-grinding ostectomy was performed for all patients, and the grinded skeletal fragment was implanted into mental region.After moulding, the mandible was fixed by plaster slab.

• 方法：应用下颌角磨削去骨矫治60例下颌角肥大畸形，并将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。