Verónica MÉNDEZ-GONZÁLEZ, Rodrigo VARGAS-LÓPEZ, Amaury POZOS-GUILLÉN, Karla NAVARRETE-OLVERA, Mariana GUTIÉRREZ-SÁNCHEZ, Dante ARTEAGA-MARTÍNEZ, Arturo GARROCHO-RANGEL
European Endodontic Journal - 2026;11(6):275-284
Objective: This study aimed to compare the efficacy of 2 retreatment protocols - SClean(R) file and R1 ClearSonic(TM) ultrasonic tip - in removing bioceramic (EndoSequence BC Sealer(R), CeraSeal(R), Kerr(R)) and epoxy resin-based (AH Plus(R)) sealers using micro -CT analysis. Methods: One hundred and four extracted single-rooted teeth were divided into 8 groups according to sealer type and cleaning protocol. Residual sealer volume, surface area, and apical permeability were analysed using Mann-Whitney U and Kruskal-Wallis tests (alpha = 0.05). Results: No technique achieved complete removal, with the highest residue in the apical third. SClean(R) was more effective on bioceramic sealers (P < .05), while R1 ClearSonic(TM) showed no significant inter-sealer differences. Apical permeability recovery was greatest with bioceramic sealers, reaching 100% for EndoSequence BC Sealer(R). Conclusion: In conclusion, bioceramic sealers are more easily eliminated than epoxy resin-based sealers, though complete removal - particularly apically - remains difficult.
