Resolution of apical periodontitis through nonsurgical endodontic retreatment: A serial case report

Advanced technologies can increase the success rate of endodontic treatment through providing complete desinfection of root canal system.  In this work, we will present nonsurgical management of previously treated teeth with long-term follow-up. In these cases, clinical and radiographic evaluation revealed persistent infection resulting in apical periodontitis. The option of surgical management is considered when unsuccessful outcome of nonsurgical treatment or retreatment occurs. It is essential to evaluate surgical cases on the basis of clinical and radiographic findings to obtain a predictably high success rate.