Aim: This study compared the efficacy of gutta percha and sealer removal during retreatment using Protaper universal retreatment rotary files, D-Race rotary files and hand files with Gates Glidden. Methods: Thirty six extracted single rooted teeth were selected for the current study. The canals were prepared using a modified crown-down technique then filled using the lateral compaction technique. Specimens were randomly divided into 3 equal groups each consisted of twelve specimens. Group one used manual files, group 2 used D-Race system while group 3 used Protaper retreatment system. Samples were split longitudinally and examined under the stereomicroscope. Results: No significant differences among the Protaper and the D-RaCe groups in the mean values of root canal filling remnants, whereas the hand files and Gates Glidden group differed significantly. Conclusion: D-Race and Protaper retreatment files removed gutta percha and sealer more efficiently than hand files and Gates Glidden.
Kataiaa MM, M. Negm A, M. Kataia M. Efficacy of different techniques used for root canal retreatment. Future Dental Journal. 2020; 4(2):170-174.