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根管再治疗是指在初次根管治疗失败后患牙仍旧持续或再次出现感染症状时,需去除原充填物重新进行的根管预备、消毒和充填。根管内残留物是指根管再治疗过程中彻底清理根管后根管内残余的牙胶、碎屑和玷污层,去除原充填物已成为根管再治疗成功的关键。随着各种现代化再治疗器械的问世,根管再治疗中根管内残留物量的评价已经成为衡量它们对根管系统清理能力的指标之一。本文就根管内残留物量的评价方法作一综述。
Root canal re-treatment is the root canal preparation, disinfection and filling of the original filling to be re-performed after the initial root canal treatment failure continues or reoccurs. Root canal remnant refers to the residual root canal in the process of root canal re-treatment of residual dentin, debris and smear layer, the removal of the original filling has become the key to successful root canal treatment. With the advent of various modern re-treatment instruments, the evaluation of the amount of residual root canal in root canal re-treatment has become one of the indicators to measure their ability to clean the root canal system. This article reviews the method of evaluating the amount of residual material in the root canal.