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Published on: December 20, 2024
Effect of root canal sealer and artificial accelerated aging on fibreglass post bond strength to intraradicular dentin
Fernanda-Ribeiro Santana1, Carlos-José Soares2, Josemar-Martins Ferreira3
1DDS, MSc, PhD. Department of Stomatologic Sciences, School of Dentistry, Federal University of Goiás, GO, Brazil.
Objectives:
To evaluate the effect of root canal sealers (RCS) and specimen aging on the bond strength of fibre posts to bovine intraradicular dentin.
Material And Methods:
80 teeth were used according the groups - Sealapextm, Sealer 26®, AH Plus® and specimens aging - test with no aging and with aging. The canals prepared were filled using one of each RCS. The posts were cemented. Roots were cross-sectioned to obtain two slices of each third. Samples were submitted to push-out test. Failure mode was evaluated under a confocal microscope. The data were analysed by ANOVA, Tukey's, and Dunnet tests (α = 0.05).
Results:
No significant difference was detected among RCS. Aged control presented higher bond strength than immediate control. The aging did not result significant difference. Adhesive cement-dentin failure was prevalent in all groups.
Conclusions:
RCS interfered negatively with bonding of fibreglass posts cemented with self-adhesive resin cement to intraradicular dentin. Key words:Fibreglass post, bond strength, root dentin, endodontic sealer, aging.
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