正颌手术联合正畸矫治骨性双颌前突畸形

Correction of bimaxillary protrusion by using both orthognathic surgery and ort hodontics

目的 以外科手术联合正畸治疗的方法矫治骨性双颌前突畸形 ,并观察其远期疗效。方法 1996年以来共治疗骨性双颌前突畸形 4 6例 ,其中 31例进行了术前正畸治疗。 4 6例患者术前均进行X线头影测量分析及模型外科分析 ,结合患者的意见及畸形具体情况采用 4种手术方法进行治疗。术中所有截骨线均采用钛板、钛钉坚强内固定。术后定期复查 ,4 6例中 39例进行了术后正畸治疗。结果 术后随访 34例 ,平均 2 7.7个月 ,骨段均愈合良好 ,无明显复发。上颌前牙骨段平均后退 (6 .3± 0 .9)mm ,下颌前牙骨段平均后退 (5 .2± 1.2 )mm ,面部外形及咬合关系满意。结论 正颌手术联合术前术后正畸治疗矫治骨性双颌前突畸形 ,可取得咬合关系及面部外形双满意的效果。

Objective To correct bimaxillary protrusion by using b oth orthognathic operation and orthodontic treatment. Methods 46 bimaxillary protrusion patients, 7 male, 39 female, aged from 19 to 31 years (mean 24.2 years), were surgically corrected since 1996. Of them 31 cases underwent preoperative orthodontic treatment. Cephalometric analysis and model s urgery were performed in all patients and 4 kinds of operation methods were used to correct the deformity. All osteotomy segments were fixed with rigid internal fixation. 39 cases underwent postoperative orthodontic treatment. Re sults 34 cases had been followed-up for ranged from 12 to 72 months (mean 27.7months). All osteotomy segments healed well. There were no severe com plications and evident relapse. The maxillary osteotomy segments were moved back for average (6.3±0.9) mm and mandibular osteotomy segments for average (5.2±1 .2) mm. Both occluding relation and facial contour were satisfied. Co nclusion Bimaxillary protrusion can be satisfyingly corrected by usi ng both of orthognathic operation and orthodontic treatment.