下颌前突畸形的手术治疗,术后骨片的固定很重要,为克服牙弓夹板固定不牢靠的缺点,防止畸形复发,作者运用升支内外板间切骨交锁固定的方法,使骨片的固定达到牢靠稳固。仔细地研究石膏模型和远距 X 线照片,计算需要使下颌后退的距离,预先制作上下牙弓夹板。全麻下绕下颌角作弧形切口,切断嚼肌附丽和骨 Surgery for the treatment of mandibular protrusion deformity, postoperative fixation of bone fragments is very important, in order to overcome the shortcomings of dental arch splint is not solid, to prevent the recurrence of deformity, the authors use the internal fixation of internal and external plate osteosynthesis locking method, the bone fragments Fixed to achieve solid and firm. Carefully study the gypsum model and telephoto radiographs, calculate the need to make the jaw back distance, pre-made up and down the arch of the arch. Under general anesthesia mandibular angle for arc-shaped incision, cut off the attachment of the chewing muscle and bone