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干髓术后Ⅱ类洞制备充填发生冠折的原因分析舟山海洋渔业公司职工医院口脸科王斌Ⅱ类洞或复面洞的结构较为复杂，由于在制备过程中，要求比较高，如其中忽略了某一方面，不按要求制备或患牙本身结构上的缺陷，而造成修复后发生冠折，导致修复失败，经临床观察比例较高。本...
Analysis of the Causes of Coronal Folds in Preparation and Filling of Class Ⅱ Cores after Dry-pulp Surgery Wang Bin, a member of the staff hospital of Zhoushan Marine Fisheries Company, has a complicated structure of Class Ⅱ or complex holes. Due to the relatively high requirements in the preparation process, Ignoring a certain aspect, do not follow the requirements of the preparation or the defect of its own structural defects, resulting in the repair of the crown, resulting in failure to repair, the higher the proportion of clinical observations. this...