ABSTRACT
The main aim of root canal treatment is to clean and disinfect the root canal system, thereby reducing the bacterial load, removing necrotic tissue and creating an environment in which periapical healing can occur. Nonsurgical retreatment is considered to provide a better opportunity to disinfect the root canal system than a surgical approach, as it is generally not possible to clean the coronal part of the root canal system during endodontic surgery.1
