Methods A horizontal incision is made intraorally.The periosteum is elevated from the lateral and medial aspect of the ramus and continued to the mandibular angle.

• 方法在下颌升支前外侧,沿升支外斜线作切口,于骨膜下分离,暴露术区后,依术前设计用磨削锉将下颌角肥大畸形的骨性部分除去,并将其修磨成近似正常的下颌角。