根管治疗牙最终被拔除的原因分析

Cause analysis of extracted endodontically treated teeth.

目的 :以最终被拔除的根管治疗牙为研究对象 ,来评判其失败的原因。方法 :收集分析 77例拔除的根管治疗牙资料 ,进行分类研究。结果 :与修复有关的失败占 6 1.0 % ,其中主要是冠折。与牙周疾病有关的失败占 2 9.9% ,根管治疗的失败仅占 9.1%。结论 :根管治疗自身的失败比较少见 ,但一旦发生 ,后果严重 ,平均寿命较短。冠修复的根管治疗牙比未冠修复的根管治疗牙平均寿命长。

Objective:All endodontically treated teeth that were extracted were evaluated for cause of failure.Methods:A report form was completed for all extracted teeth which has previously received endodontic therapy. The teeth collected were classified into major failure categories of prosthetic, periodontic and endodontic origin.Results:Of the teeth,61.0% were prosthetic failures which were due primarily to crown fracture.29.9% were periodontal failures.Only 9.1% of the failure were due to endodontic causes.Conclusion: Teeth that had been crowned had greater longevity than uncrowned teeth Endodontic failures were less frequent but became evident more quickly than those in the other categories. [