骨性错(牙合)畸形外科手术前后的正畸治疗

目的 探讨骨性错(牙合)畸形外科手术前后正畸治疗方法,以指导临床.方法 对25例年龄为17～36岁的骨性错殆畸形患者先后进行术前正畸、手术治疗和术后正畸.术前正畸包括牙齿的排齐、牙弓的整平、扭转牙的矫正、牙弓的协调和去除前后牙代偿.术后正畸包括关闭剩余间隙、牙齿的精细调整,建立良好的(牙合)关系、理想的覆殆覆盖和牙根平衡.结果 25例骨性错(牙合)畸形,平均术前正畸治疗时间14.41个月(2-23个月),术后正畸治疗时间6.94个月(1.5～13.5个月),治疗完成平均21.35个月(7～35个月).上颌前突患者上颌后退平均5.00 mm,下颌后缩患者下颌前移平均7.25 mm,下颌前突患者下颌后退平均6.55 mm,颏部后缩患者颏前移平均5.33 mm.结论 术前术后正畸治疗是正颌外科手术矫治骨性错(牙合)畸形的重要步骤,也是取得良好矫治效果的基本要求.

Pre-and post-surgical orthodontic treatment of skeletal malocclusion

Objective To study the pre-and post-surgical orthodontic treatment methods of patients with skeletal malocclusion treated through combined orthodontic-orthognathic surgery,and to set some guidance for the future clinical Work.Methods Twenty-five skeletal malocclusion patients in our clinic aged from 17 to 36 were treated by presurgical orthodontic treatment,orthognathic surgery and postsurgical ortho dontic treatment.Presurgical orthodontic treatment included alignment of dental arches,leveling of arches,elimination of rotations,coordination of the arches,and decompensation of anterior and posterior teeth.The postsurgical orthodontic treatment included closing residual spacing,final tooth alignment,maximum interdigitation,finalizing torque,artistic positioning,ideal overjet/overbite relationship and establishment of correct root parallelism.Results The duration of presurgical orthodontic treatment was 14.41 months on average(2～23 months),and the postsurgical orthodontic treatment time was 6.94 months on average(1.5～13.5 months).The duration for the whole active treatment was 21.35 months on average(7～35 months).The maxilla was moved back on an average 5.00 mm in maxillary protrusion cases.The mandible was moved anteriorly on an average 7.25 mm in mandibular retrusion cases.The mandible was moved back on an average 6.55 mm in mandibular protrusion cases.The chin was moved anteriorly on an average 5.33 nan in retrusion of chin cases.Conclusions Pre-and post-surgical orthodontic treatments are important procedures to the surgical treatment for skeletal malocclusion and basic needs to obtain successful treatment results.