Comparative Evaluation of Supplementary Cleaning Techniques for Removal of Bio-C Sealer and AH-Plus from Oval Root Canals: A Micro-CT Analysis

• Published in: Iranian endodontic journal 2024, Vol.19 (3), p.199-207
• Main Authors: Bincelli Seckler, Iris Nogueira, Pelegrine, Rina Andréa, Stringheta, Carolina Pessoa, Lopes, Ricardo Tadeu, de Sá Silva, Aline Saddock, da Silveira Bueno, Carlos Eduardo
• Format: Article
• Language: English
• Subjects: Original
• ISSN: 2008-2746; 1735-7497; 2008-2746
• DOI: 10.22037/iej.v19i3.43580

This study aimed to compare the effectiveness of two endodontic cleaning techniques, passive ultrasonic irrigation (PUI) and the XP-endo Finisher R (XPR) system, in removing residual filling material during endodontic retreatment procedures. Forty mandibular premolars with oval canals were divided into four groups based on the sealer used (AH-Plus or Bio-C Sealer) and the cleaning technique employed (PUI or XPR). To ensure uniformity of canal volume among groups, initial micro-CT scans were conducted. The canals were instrumented, filled, and then re-instrumented before undergoing either PUI or XPR cleaning techniques. Residual filling material volumes were assessed through micro-CT scans, and statistical analysis was performed using the Kruskal-Wallis and Mann-Whitney U tests. Following instrumentation, there was no significant difference in residual filling material volumes between AH-Plus and Bio-C Sealer groups (1.35 mm and 1.02 mm , respectively; >0.05). However, after supplementary cleaning techniques, XPR-cleaned specimens exhibited significantly less residual material compared to PUI-cleaned specimens (0.01 mm and 0.29 mm for Bio-C Sealer, and 0.07 mm and. 0.30 mm  for AH-Plus,