根尖下截骨后退联合模型外科矫正上、下颌前突畸形的效果分析

目的:观察根尖下截骨后退联合模型外科及正畸治疗矫正上、下颌前突畸形的效果。方法:对7例骨性上、下颌前突畸形的患者采用术前取牙模,按照模型外科设计上、下颌骨的骨切开线,制作咬合板,术中根据模型设计的切开线行根尖下截骨后退的正颌手术,根据咬合板设计恢复咬合关系,用钛板坚强内固定,术后8～10周开始正畸治疗。结果:7例患者切口均一期愈合,面部形态、咬合关系、开口型、开口度、咀嚼度、骨段愈合等方面的治疗结果均令人满意。结论:采用根尖下截骨后退术联合模型外科及正畸治疗是进行矫正上、下颌前突畸形的首选手术方法之一。

Efficacy of subapical osteotomies combined with surgery model and orthodontic therapy in treatment for bimaxillary protrusion

Objective:To evaluate the effect of subapical osteotomies combined with surgery model and orthodonitic therapy for correction of bimaxillary deformity. Methods:Seven patients with bimaxillary prognathism deformity were undergone orthodonitic therapy according to preoperative design,which included making plaster model of the maxillary and mandibular osteotomies and got the dental impressions before operation.The osteotomy was completed under the direction of preoperative designing.Two segm ents were moved according to the dental impressions and fixed with microplates and screws.Postoperative orthodontic sustained 8-10 weeks. Results:The satisfactory facial appearances,occlusion relationship,open type,maximal opening of mouth and healing of bone segments of all cases were well. Conclusions:Subapical osteotomies and postoperative orthodonitic is one of the best choices for remedying bimaxillary protrusion.