Keywords sagittal split ramus osteotomy;rigid internal fixation;intraoral vertical ramus osteotomy;sensory nerve action potential;temporomandibular joint;

• 关键词下颌支矢状劈开术;坚强内固定;下齿槽神经;动作电位;下颌支垂直骨切开术;颞下颌关节;