目的探讨Le FortⅠ型骨切开术在矫治陈旧性面中部骨折所致颌骨畸形的应用价值。方法对42例陈旧性面中部骨折所致颌骨畸形的患者,通过螺旋CT及三维重建、模型外科分析、咬导板制作等准备,术中采用Le FortⅠ型骨切开术对本组病例进行治疗,观察患者术后面部畸形及咬关系的恢复情况,分析Le FortⅠ型骨切开术对颌骨畸形以及咬关系的矫治效果。结果本组42例患者中39例的面部形态和咬关系恢复良好,有3例患者术后咬关系欠佳,经正畸治疗后恢复正常,无严重手术并发症发生。结论 Le FortⅠ型骨切开术是治疗陈旧性面中部骨折所致颌骨畸形的有效方法,可取得满意的治疗效果,值得在临床中进一步推广应用。 Objective To investigate the value of Le FortⅠ osteotomy in the treatment of mandibular deformity caused by the old midface fractures. Methods Forty-two patients with mandibular deformity caused by old facial midfacial fractures were treated with Le Fort Ⅰ-type osteotomy in this group through spiral CT, three-dimensional reconstruction, model surgical analysis and bite guide. The postoperative facial deformity and bite relationship recovery were observed, and the effect of Le Fort Ⅰ osteotomy on the correction of jaw deformity and bite relationship was analyzed. Results The facial morphology and bite relationship of 39 patients recovered well in this group of 42 patients. There were 3 patients who had poor postoperative bite relationship and returned to normal after orthodontic treatment without serious complications. Conclusion Le Fort Ⅰ type osteotomy is an effective method to treat the maxillary deformity caused by the obsolete facial central fractures, which can achieve satisfactory therapeutic effect and is worth further promotion in clinical application.