Evaluation of Postoperative Pain After Single Visit Retreatment of Symptomatic and Asymptomatic Teeth

A single operator procedured in one visit of non-surgical endodontic retreatment. Teeth were anesthetized using articaine hydrochloride with epinephrine 1:200,000 for mandibulary premolar teeth with one root canal. Each tooth was isolated with a rubber dam and then coronal restorations and caries were removed using sterile high-speed burs under water cooling. After preperation of the cavity access and localization of the canal orifice, all microorganisms that may have entered the root canal system are eliminated by removing the old canal filling with the One Flare and MicroMega REMOVER files in the MicroMega retreatment kit.