60例临床铸造桩核冠修复失败原因探讨

目的探讨临床铸造桩核冠修复失败的原因。方法对60例残根残冠进行铸造桩核冠修复失败的病例进行分析，找出失败原因，提出预防及治疗措施。结果60例临床铸造桩核冠修复失败的病例中，32例桩核松动脱落，12例唇侧冠壁折断，10例根尖周炎，6例根折。结论临床铸造桩核冠修复失败的主要原因有：桩核松动脱落、冠壁折断、根尖周炎、根折。为了提高临床修复成功率，口腔修复医生应选择最适合患者的桩核修复系统，并制定完善的修复治疗计划。

The Causes of 60 Cases on Post Crown's Failure in Clinical

Objecive To evaluate the causes of 60 cases for clinical failure in post crown.Methods Sixty cases with failure in post crown cure were entered the study.The causes of failure were analyzed.Results Among the 60 cases with failure in post crown cure,38 cases were due to the crown'loosing or broken away,12 cases with the broken dental crown,10 cases with periapical periodontitis,6 cases with broken root.Conclusions It was the loosing or broken away of post crown,periapical periodontitis,dental crown and root broken consist of the main causes for clinical failure in post crown.