牙冠延长术在前牙残根残冠修复中的临床应用

目的：探讨牙冠延长术在前牙牙体缺损达龈下的残根残冠修复中的临床疗效。方法：选取30例患者的34颗牙体缺损达龈下的前牙,断端位于龈下最深距离≤3mm,通过牙冠延长术暴露龈下牙体断面,术后6周行桩冠修复。结果：30例34颗患牙成功31颗,失败3颗,成功率91.18%。结论：在良好的适应证下,牙冠延长术有利于前牙残根残冠的保存和修复,可以提高修复治疗的效果。

The clinical application of crown lengthening surgery in the restoration of residual root and crown in anterior teeth

Objective： To discuss the clinical efficacy of crown lengthening surgery on the restoration of residual root and crown with subgingivally involved defect in anterior teeth.Methods： 34 anterior teeth with subgingival dental defect from 30 patients were selected and the subgingival depth of the defect≤3mm.Expose the subgingival tooth section by the crown lengthing surgery and the restoration of crown was performed 6 weeks after the surgery.Results： Out of 34 affected teeth （30 cases）,31 teeth were treated successfully and successful ratio was 91.18%.Conclusion： In good indication,the crown lengthening surgery in favor of the preservation and restoration of the anterior residual crown and root,can improve the effectiveness of restorative treatment.