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Effect of Glycolic Acid on the Bond Strength Longevity of Bioceramic and Resin Based Endodontic Sealers: An In Vitro
Bruna Monteiro de Barros Ciribelli Alves1, Helena Cristina de Assis1, Karen Gisselle Garay Villamayor1
1Department of Restorative Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo (USP), Ribeirão Preto, São Paulo, Brazil.
Abstract:
This study evaluated the effect of glycolic acid (GA) as a final irrigant on the long-term bond strength of AH Plus and Bio-C Sealer. Forty-eight single-rooted teeth were assigned to four groups (n = 12): ethylenediaminetetraacetic acid (EDTA) + AH Plus, glycolic acid + AH Plus, EDTA + Bio-C Sealer, and glycolic acid + Bio-C Sealer. The bond strength and failure pattern were evaluated immediately and after 6 months, while the interface adaptation and sealer penetrability were also assessed. Immediate bond strength did not differ between groups, but after 6 months AH Plus showed higher values than Bio-C Sealer. The failure pattern was similar among all groups at both evaluation time points. EDTA + AH Plus exhibited superior interface adaptation compared with EDTA + Bio-C Sealer, particularly in the cervical third. Sealer penetrability was comparable among groups. Glycolic acid produced similar outcomes to EDTA, and AH Plus maintained greater bond strength over time.
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