Methods The bilateral prominent mandibular angle or outer lamina was resected through the intraoral approach. The resected bone fragments were shaped and rigid fixed to the chin with miniplates and screws.

• 方法 口内入路 ,将双侧下颌角骨质或下颌骨外板取出 ,根据颏部具体情况及患者主观意愿 ,将骨块修整成适当形状 ,移植于颏部 ,以钛钉或钛板作坚强内固定。