(TC39) Endodontic Retreatment: Additional Techniques in Removing Residual Gutta-Percha

Abstract: One of the primary objectives in endodontic retreatment is to remove as much existing root canal filling material as possible to allow for effective disinfection, reshaping, and re-obturation of the canals. Successfully removing the remaining gutta-percha and reducing the bacterial load is essential for the success and outcome of endodontic retreatment. However, challenges often arise in removing gutta-percha from hard-to-reach areas such as isthmuses, large oval-shaped canals, and gutta-percha within the pulp chamber. This presentation explores various techniques for efficiently removing gutta-percha during endodontic retreatment. These techniques include dipping a microbrush with RC Prep into a chamber or canal filled with chloroform and loosely bound gutta-percha, utilizing paper point wicking with chloroform in irregularly shaped canals, activating chloroform with passive ultrasonics, and scrubbing the chamber with a chloroform-soaked microbrush and cotton pellet. This presentation offers clinical tips and introduces several simple yet effective methods using existing tools for retreatment procedures.