目的采用不平行就位道桩核烤瓷冠修复磨牙残根残冠多根管。
Objective To repair the residual roots and crowns of the molars with multi-canals using unparalleled posts and cores and ceramic crowns.
结果：牙髓坏疽患牙、多根管磨牙在根管治疗术中约诊间痛机率较大。
RESULTS: the occurrence of inter-appointment pain during the treatment of pulp gangrene and molars happened more often than that of the others.
结论：牙髓坏疽或多根管磨牙在根管治疗术中应加强治疗的细致性和精确性。
CONCLUSION: During the RCT of pulp gangrene and molars, particularity and exactitude of the operation should be enhanced.
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