Influence of different root canal drying protocols on the bond strength of a bioceramic endodontic sealer
Accepted: 26 September 2021
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Aim: This study aimed to evaluate the influence of different root canal drying protocols on the bond strength of a bioceramic sealer, in comparison with an epoxy resin-based sealer.
Methodology: Sixty-six mandibular premolar teeth had their crowns sectioned and their canals prepared with Reciproc (VDW GmbH). Next, the roots were randomly distributed into three groups (n=22), according to the different drying protocols: absorbent paper points (GPP); irrigation with 95% ethanol and drying with paper points (G95E); and irrigation with 70% ethanol and aspiration with a 30-gauge needle (G70E). Each group was then redistributed into two subgroups (n=11), according to the sealer used in the single cone technique: Sealer Plus BC (MK Life) or AH Plus (Dentsply). After 7 days of obturation, the roots were sectioned into 1-mm thick slices and submitted to the push-out test. Bond strength was calculated (MPa) and data were analyzed by Kruskal-Wallis test, complemented by Games-Howell post-hoc test and Mann-Whitney U test (α=5%).
Results: There was no statistical difference among the drying protocols in the specimens filled with AH Plus, irrespective of the root third (P>0.05). For the Sealer Plus BC, no significant difference was observed for the drying protocols, however, there was statistical difference among the root thirds in G95E (P=0.017). When the sealers were compared to each other, no statistical difference was observed, regardless of the drying protocol evaluated: GPP (P=0.447), G95E (P=0.687) and G70E (P=0.132).
Conclusions: The different drying protocols of the root canal did not influence the bond strength of both endodontic sealers.
Supporting AgenciesNational Council for Scientific and Technological Development (CNPq)
Copyright (c) 2021 Ihan Vitor Cardoso, Maria Luisa Seixas-Silva, Gabriela Rover, Eduardo Antunes Bortoluzzi, Lucas da Fonseca Roberti Garcia, Cleonice Silveira Teixeira
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