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[Scavenging strategy for root canal infection].

Root canal therapy is generally considered to be the most effective way to remove inflammation and infection in the root canal. However, the presence of persistent infection in the root canal may lead to a failure of the treatment. Therefore, the complete removal of root canal infection is essential for the success of root canal therapy. The purpose of root canal therapy is to clear up the intra-canal infection and thoroughly sterilize the root canal, and then fill up the root canal system with dimensionally, so as to prevent reinfection. This article focuses on the main methods and problems of the current root canal infection and the strategy of eradicating the infection in the root canal.