(TC38) Gutta-percha Softening Technique for Metal Particle Retrieval and Improved Canal Treatment

Abstract: During endodontic treatment, especially when accessing a tooth through a metal restoration or fixed metal prosthesis, there's a risk of inadvertently introducing metal particles into the canal system. These particles can lead to adverse consequences such as erratic apex locator readings, obstruction, and blockage of the canal. This impedes thorough cleaning, shaping, and obturation of the root canal. Moreover, there's a risk of extruding these particles into periapical tissues, potentially leading to an inflammatory reaction that could impact the success of treatment. This presentation focuses on a specialized technique using a gutta-percha cone softened with chloroform to retrieve metal particles forced into the canal system. The technique employs the concept of the formed cone technique. A gutta-percha cone, one size smaller than the last file passively fitting in the canal, is used. The end of the cone is softened with chloroform and inserted into the canal up to the location of the metal particle. The cone is left in the canal for a few minutes to harden and simultaneously incorporates the metal particle. The gutta-percha cone is then removed with the metal particle attached. This clinical tip aims to simplify the removal of metal particles from any portion of the root canal, assisting the clinician with instrumentation and obturation.