前牙残根残冠在固定正畸治疗中的临床应用研究

The Clinical Study of Residual Root and Crown of Anterior Teeth Fixed Orthodontic Treatment

目的评价前牙残根残冠在固定正畸治疗中的临床作用以及治疗效果。方法选择18例有上、下前牙残根残冠的正畸病例,拍摄X线牙片了解根尖周病变,经过常规的根管治疗后,备根做桩核,并在桩核帽唇面焊上相对应的托槽,然后按计划循序正畸治疗。治疗结束后去掉托槽,常规烤瓷冠修复,黏接后印模制戴保持器。结果残根残冠在正畸治疗结束后,牙根没有明显的吸收,松动<Ⅰ度(符合正畸要求)。根尖周病没有加重或复发,牙根在义齿修复后能够正常承受咬功能。结论经过合格根管治疗的牙齿对正畸治疗没有禁忌,成功的根管治疗对正畸牙齿移动也没有影响,残根残冠能够随正畸力移动改建并最终稳定。

Objective To evaluate the clinical and treatment effects of anterior residual root or crown in the orthodontic treatment.Method A total of 18 cases orthodontic patients,who had upper and lower anterior residual root or crown,were taken the X-ray film to find out the periapical pathological changes.After the regular root canal therapy,the standby root was used as the post-core and the corresponding bracket was welded on the surface of the cap of post-core,then carrying out the orthodontic treatment as scheduled.After completing the treatment,the bracket was removed,the regular porcelain crown repair was performed and the maintainer was modeled,produced and worn after the adhesion.Result After completing the orthodontic treatment,the residual root had no obvious absorption,loosening degree I Degree（meet the requirements for orthodontic treatment）.The periapical pathological changes had not become worse or recurred.The root could bite normally after the repairing of false tooth.Conclusion The teeth after the qualified root canal therapy are not needed to avoid the orthodontic treatment.The successful root canal therapy has no influence on the moving of orthodontic teeth and the residual root or crown could be rebuilt and stabilized with the movement of orthodontic force.