目的：观察不同深度的隐裂牙根管治疗并全冠修复后的疗效。方法：纳入临床确诊并需根管治疗的隐裂牙50例，在根管显微镜下开髓前后仔细探查裂纹的走向，按照裂纹的深度和范围分为Ⅰ度、Ⅱ度、Ⅲ度，将50例病例按照分级标准依次归类，对所有隐裂牙行根管治疗并全冠修复，随访1年。结果：50例中34例成功，5例改善，11例失败，总有效率为78．0％，其中Ⅰ度有效率93．3％，Ⅱ度有效率82．1％，Ⅲ度有效率28．6％，Ⅰ度和Ⅱ度有效率明显高于Ⅲ度（P ＜0．05），而Ⅰ度和Ⅱ度有效率的差异无显著性（P ＞0．05）。结论：隐裂牙根管治疗后的疗效与裂纹的深度和范围密切相关。%Objective:To observe the clinical effect of endodontic therapy and full crown restoration in the treatment of cracked teeth. Methods:The trace and depth of 50 cracked teeth were carefully examined under root canal microscope.According to the depth and scope of the cracks,the cracked teeth were classficated into the degree of Ⅰ,Ⅱ and Ⅲ,treated endodontically and restored with full crown.Results:During 1 year follow-up,34 cases showed successful effect,5 progressive,1 1 failure.The general effectiveness rate was 78.0%.The effectiveness rate of group Ⅰ,Ⅱ and Ⅲ was 93.3%,82.1 % and 28.6% respectively.Group Ⅰand Ⅱ vs Ⅲ,P <0.05,Ⅰvs Ⅱ,P >0.05.Conclusion:The treatment effect of cracked teeth is closely related to the depth and scope of cracks.
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