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根管治疗失败后,为了保留患牙一般应行根管再治疗或者根尖手术,而有效去除根管内原充填物是保证根管再治疗成功的关键。目前临床上用于清除根管内充填物的器械方法很多,然而任何一种器械方法都不能完全去除根管内充填物,不同的器械去除根管充填物的效率有所不同。本文就根管再治疗的重要性及不同器械去除根管充填物的效率等方面的研究进展作一综述。
After the failure of root canal treatment, root canal re-treatment or apical surgery should be performed in order to retain the affected teeth. Effectively removing the original filling in the root canal is the key to successful root canal re-treatment. At present, there are many ways to remove the filling material in the root canal. However, the root canal filling material can not be completely removed by any one of the device methods. The efficiency of removing the root canal filling material by different instruments is different. This article reviews the importance of root canal re-treatment and the research progress of different instruments for root canal filling.