CBCT Evaluation of Gutta-Percha Removal Using Protaper and Mtwo Retreatment Files, Wave One, and Hedstrom Files: An Ex Vivo Study.

This study aimed to evaluate the efficacy of ProTaper, Mtwo, and WaveOne retreatment files and Hedstrom files for removal of gutta-percha from the straight root canals using cone-beam computed tomography (CBCT). Forty freshly extracted single-rooted and single-canal teeth were selected for this study. The teeth were decoronated, and biomechanical preparation was performed up to #30 K-file.