Retratamiento de un segundo molar inferior con anatomía compleja. Retratamiento endodóntico

Resumen

The aim of this study is to present the clinical management of an endodontic retreatment in a case in which the tooth presented a complex anatomy, broken file and a filling material that was difficult to bypass. We present a case in which a patient refers pain in an endodontically treated 37. Diagnostic tests indicate the presence of apical periodontitis due to the failure of the previous treatment as a result of its complex anatomy and subobturation of the canals. Cavity access revealed the existence of an extra root containing a broken file. The distal root was filled using a composite like a filling material. Due to the broken files, ledge, filling materials used and so forth, it took three appointments to reach the working length for the entire root canal system. The irrigation protocol consisted of 4.25% hypochlorite, 17% EDTA and 4.25% hypochlorite activated with Endoactivator®. The B&L® system was used for filling. 1 year follow-up showed healing of the previous apical periodontitis. Moreover, the tooth presented adequate function and esthetic. In conclusion, a profound knowledge of the internal anatomy of the teeth and the possible variations is critical. Separated instruments and changes to the original anatomy are the primary obstacles that must be overcome in order to achieve success in endodontic retreatment.