Retreatment Efficacy of XP-endo Shaper and Reciproc Blue in Removal of Bioceramic Sealers from Oval Shaped Canals-A Micro Computed Tomographic Study.

To compare the retreatment efficacy of XP-endo Shaper (XPES) and Reciproc Blue (RB) files in in the removal of a bioceramic-based root canal filling material from oval shaped canals. Forty human mandibular first premolars with oval canals were selected for the study. Initially, access cavity preparation and instrumentation were completed. Obturation of the root canals were carried out using a bioceramic sealer (BCS), followed by micro-computed tomography (MCT) analysis to assess the volume of the filling material. The samples were then randomly divided into two groups: Group 1 (XPES) and Group 2 (RB). Post-retreatment procedures (RTP) MCT imaging analysis was conducted, and the volume of the remaining filling material was calculated. Statistical analysis of the data was performed using SPSS software. The mean volume of filling material in both groups did not show statistical significance (p > 0.05). However, XPES demonstrated a significant reduction in the remaining filling material in the C3 and M3 areas (p < 0.05). In contrast, there was no statistically significant difference in the mean volume between the two groups in the A3 area (p > 0.05). XPES is notably more effective than RB in removing root canal filling material from the C3 and M3 areas. [ABSTRACT FROM AUTHOR]