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Type: Artigo de periódico
Title: Influence of Chlorhexidine and Ethanol on the Bond Strength and Durability of the Adhesion of the Fiber Posts to Root Dentin Using a Total Etching Adhesive System
Author: Cecchin, D
de Almeida, JFA
Gomes, BPFA
Zaia, AA
Ferraz, CCR
Abstract: Introduction: The aim of this study was to investigate the effects of pretreatment of gel chlorhexidine (CHX) and ethanol (EtOH) on the bond strength and durability of the adhesion of the fiber post relined with resin composite to the root dentin using a total etch adhesive system. Methods: Forty bovine incisor roots were divided into four groups after phosphoric acid etching: irrigation with physiologic solution (control), 5 minutes with CHX, 1 minute with EtOH, and 5 minutes with chlorhexidine followed by 1 minute with EtOH. Fiber posts relined with resin composite were cemented with either RelyX ARC (3M ESPE, St Paul, MN) and a total etch adhesive system Scotchbond Multi-Purpose (3M ESPE). Each group was randomly divided into two subgroups: 24 hours of storage and 12 months of storage. All roots were sectioned transversely, and the push-out test was performed. Failure modes were observed, and the bond strength means were analyzed by analysis of variance and the Tukey test (alpha = 0.05). Results: CHX irrigation resulted in homogeneous bond strength values at 24 hours and 12 months of storage (P < .05). A significant bond strength decrease was noticed after 12 months of storage when irrigations were performed with physiologic solution and EtOH application only or associated with CHX (P < .05). Conclusions: The use of CHX pretreatment could preserve the bond strength of the fiber post relined with resin composite to root dentin for 12 months. The use of EtOH and CHX followed by EtOH did not preserve the bond strength of the total etch adhesive system Scotchbond Multi-Purpose. (J Endod 2011;37:1310-1315)
Subject: Bond strength
composite resin
fiber post
root canal
Country: EUA
Editor: Elsevier Science Inc
Citation: Journal Of Endodontics. Elsevier Science Inc, v. 37, n. 9, n. 1310, n. 1315, 2011.
Rights: fechado
Identifier DOI: 10.1016/j.joen.2011.05.004
Date Issue: 2011
Appears in Collections:Unicamp - Artigos e Outros Documentos

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