改良LeFortⅠ骨切开和正畸前方牵引矫正骨性上颌后缩一例报告

A case report of skeletal maxillary hypoplasia treated by modified Lefort I osteotomy and orthodontic distraction

目的 探讨外科手术和正畸前方牵引治疗骨性上颌后缩的可行性。方法 一例 16岁女性骨性上颌后缩患者 ,前牙反。经术前正畸后 ,先行改良LeFortⅠ骨切开术 +颏成形术 ,但不前移上颌骨 ,而是通过面具进行前方牵引。结果 骨性上颌后缩得到明显改善 ,反解除 ,SNA由 77.35°矫治到80 .2 5°。结论 改良LeFortⅠ骨切开术结合正畸前方牵引是治疗生长发育停止后骨性上颌后缩的的一个有效手段。

Objective [WT5”BZ]Distraction osteogenesis is a new method to correct severe craniofacial dysplasia. This study was to evaluate the effect of surgery with orthodontic distraction in treating skeletal maxillary hyoplasia. [WT5”HZ]Method [WT5”BZ]One 16 years old female patient with maxillary hypoplasia, first treated by modified Lefort I osteotomy after pre surgical orthodontics, then distracted the maxilla forward by face mask. [WT5”HZ]Results [WT5”BZ]The anterior crossbite was released. SNA was correct from 77.35° to 80.25° . [WT5”HZ]Conclusion [WT5”BZ]Modified Lefort I osteotomy combined with orthodontic distraction is an effective alternative in correcting skeletal maxillary hypoplasia.[WT5”HZ]