摘要
目的探讨前牙龈下残根经正畸牵引后冠修复的临床疗效。方法断面位于龈下1～3mm的前牙残根40颗,行完善根管治疗后正畸牵引,粘接纤维桩,计算机辅助设计与制作(computer-aideddesign/computer-aidedmanufacture,CAD/CAM)全冠。正畸牵引前、后摄X线片,测量残根断缘距牙槽嵴顶的距离;用扩大针标记并测量残根断缘距龈缘的距离;计算牵引距离。冠修复后3、6、24个月复查,评价疗效。结果正畸牵引龈下残根6～8周后,所有残根断缘均超出龈缘。40颗残根断缘距龈缘的平均距离1.15mm;残根断缘距牙槽嵴顶的平均距离3.85mm;平均牵引距离2.59mm。CAD/CAM全冠修复后随访24个月,40颗患牙稳固且牙龈健康,美观效果好,牵引后位置稳定。结论前牙残根经正畸牵引后行冠修复可达到美容和功能兼顾的较好效果。
Objective To disscuss clinical effect of orthodontic traction on anterior subgingival residual roots.Methods A total of 40 cases with residual roots which were located 1 mm to 3 mm under the gingival margins were Selected.The orthodontic traction was applied followed by perfect root canal therapy,and then fiber posts and CAD/CAM all-ceramic crown were applied to restoration.Clinical effect and patients’ satisfactions were evaluated.Results Combined with endodontics,periodontics,prosthodontics,orthodontics and other comprehensive treatment,after orthodontic traction for 6 to 8 weeks,all residual roots turn to supragingival with average 1.15 mm higher than the gingival margin.The roots are pulled out 2.59 mm averagely.The restorations were firm and the gingival margins were healthy,the crown margins were concordant with those of adjacent teeth,and the roots were steady.Conclusion Choosing appropriate cases,the multidisciplinary therapy is an applicable choice to deal with subgingival roots in anterior.
出处
《广东牙病防治》
2010年第6期323-325,共3页
Journal of Dental Prevention and Treatment
关键词
残根
牵引术
全冠修复
纤维桩
Residual root
Traction
Complete coronal restoration
Fiber post
