伴有严重骨骼异常的面颌畸形患者,除少数是由于颅颌面外伤引起外,多数系先天性上、下颌骨发育异常造成的。对此类畸形的治疗目的是改善面容,同时保持或改进原来咬合关系。近年来我科收治5例,经过术前准备、施行上下颌骨Ⅰ期手术等,获得了比较满意的效果,现报告如下。临床资料本组男性2例,女性3例。年龄在19～35岁。面中下部1/3过长症2例;左侧第一腮弓综合症1例;右颞颌关节真性强直术后复发伴 Patients with maxillofacial deformities associated with severe skeletal abnormalities, except for a few due to craniofacial trauma, are mostly caused by congenital abnormalities in mandibular development. The treatment of such deformities aims to improve the face while maintaining or improving the original occlusion relationship. In recent years, our department received 5 cases, after preoperative preparation, the implementation of the mandibular phase Ⅰ surgery, obtained more satisfactory results, are as follows. Clinical data The group of 2 males and 3 females. The age of 19 to 35 years old. In the middle and lower part of the 1/3 overexertion in 2 cases; the first left par antrum syndrome in 1 case; right temporomandibular joint after tonic recurrent