Abstract
Aims: To evaluate the volumetric amount of endodontic obturating materials remains after endodontic retreatment with and without complementary retreatment(XP-Endo Finisher) utilizing two retreatment rotary systems (R-Endo and EdgefileXR).Materials and Methods: Twenty human mandibular premolars with single straight root canals were prepared using a 2Shape endodontic rotary system with a file size of 25/0.04. Gutta-percha and T-Seal (Epoxy resin sealer) were used to obtain all the teeth using a single cone technique. Samples were then divided into two groups based on the retreatment system used (n=10). CBCT images of each sample were taken and analyzed in axial, coronal, and sagittal planes to determine the obturating material remnants after retreatment. Then, all samples retreated by two retreatment systems (R-Endo and EdgefileXR) were subjected to supplementary retreatment by the XP-Endo Finisher. Second CBCT evaluation were performed to determine the XP-Endp Finisher effect. The data were statistically analyzed using one-way ANOVA analysis of variance, independent t-test, and Duncan’s multiple analysis rang test. Results: EdgeFileXR and R-Endo were significantly different, EdgefileXR is more effective and XP-Endo Finisher improved removal of obturating materials in both groups. Conclusions: The retreatment system had a significant effect on the amount of endodontic obturating materials remnants, XP-Endo Finisher show a supplementary removal effect
