Contemporary Endodontic Retreatments: An Analysis based on Clinical Treatment Findings

A prospective in vivo investigation was conducted to determine radiographic and clinical factors as-sociated with contemporary nonsurgical endodon-tic retreatments. Approximately 1100 failing end-odontically treated teeth were screened to determine an appropriate treatment plan. Using magnification, 337 consecutive retreatment cases were evaluated and treated. The vast majority of the retreated cases involved multiple factors. Eighty-five percent of the cases presented with periradicular radiolucencies. Sixty-five percent of the cases demonstrated poor radiographic obtura-tion quality. Associated pain was noted 51 % of the time. Forty-two percent of the teeth had untreated canal space. It was statistically significant (Chi