牙冠延长术结合全瓷冠修复在前牙烤瓷冠失败病例的应用

目的：探讨应用牙冠延长术结合全瓷冠技术治疗前牙生物学宽度不足导致不良烤瓷冠修复的临床疗效。方法选取26例因生物学宽度不足导致的前牙修复失败病例，进行完善牙周治疗，根管治疗，并进行牙冠延长术后全瓷冠修复，观察术前，术后六周以及修复后三个月以及修复六个月的PD（探诊深度）， SBI（出血指数）并予以记录。结果24例患者治疗效果较好，两例术后牙龈高度不对称，患者不甚满意。结论牙冠延长术结合全瓷冠修复可以较好的解决前牙不良烤瓷冠修复的再治疗问题。

Clinical application of the surgical crown lengthening combining all ceramic crown after failure of the anterior teeth PFM crown restoration

Objective To investigate the effect after crown lengthening surgery combining all ceramic crown on anterior teeth failure of PFM crown restoration because of insufficient biological width Methods Select 26 failure cases of anterior teeth caused by insufficient biological width , repair to perfect the periodontal treatment, root canal treatment, and crown lengthening surgery. After treatment all teeth were restored by all ceramic crown, At baseline, 6 weeks after surgery and 3 months and 6 months after the restoration BOP and PD were recorded and analyzed. Results 24 patients treatment effect is good, two cases of postoperative were not very satisfied because of gum hight asymmetric. Conclusion Crown lengthening sursery combining all ceramic crown restoration can solve the failure PFM restoration on anterior teeth.