上颌侧切牙先天缺失治疗的回顾性分析

Retrospective Analysis of the Patients of Congenitally Missing Maxillary Lateral Incisors

目的:探讨上颌侧切牙先天缺失的错牙合畸形合适的治疗方法。方法:对矫治成功的19例上颌侧切牙先天缺失患者的治疗方法进行回顾性分析。结果:5例患者直接关闭缺牙间隙,6例患者开大间隙配合修复,1例患者拔除对侧第二前磨牙关闭间隙,7例患者拔除对侧第一前磨牙或侧切牙(畸形)和下颌左右第一前磨牙关闭间隙。矫治后牙列整齐,前牙覆牙合覆盖正常,中线对齐,磨牙中性或完全远中关系。结论:对于上颌侧切牙先天缺失的错牙合畸形,根据缺失牙数量、缺牙间隙和患者的综合情况进行设计,可取得良好的治疗效果。

Objective To investigate proper orthodontic treatment for patients with congenitally missing maxillary lateral incisors.Methods To retrospective analyse the treatment effect of 19 patients with congenital missing maxillary lateral incisors who had finished successfully.Results 5 patients were performed orthodontic treatment by closing the maxillary labial segment space.6 patients were performed prosthetic restoration after orthodontic treatment.Only 1 patient was performed orthodontic treatment by extracting one maxillary contralateral second premolar.7 patients were performed orthodontic treatment by extracting one maxillary contralateral first premolar or lateral incisor and two mandibular first premolars.At the end of treatment,the maxillary and mandibular teeth were aligned.The overjet and overbite were corrected.The dental midlines were coincident and the molars relationship were Class I or ClassⅡ.Conclusion The malocclusion combined with congenital missing maxillary lateral incisors could acquire satisfactory treatment effect by different approachs according to the number of missing incisors,size of missing maxillary lateral incisors gap and general situation of patients.