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Type: Artigo de periódico
Title: Nanoleakage evaluation of resin luting systems to dental enamel and leucite-reinforced ceramic
Author: Prieto, LT
Souza, EJ
Araujo, CTP
Lima, AF
Dias, CT
Paulillo, LAMS
Abstract: Purpose: The aim of this study was to evaluate the nanoleakage patterns between dental enamel and reinforced leucite ceramic, bonded with resin luting systems and a flowable composite resin. Materials and Methods: Twelve crowns of bovine incisors were randomly divided into four groups (n = 3) according to the luting procedure: Excite/Variolink II, Clearfil SE Bond/Panavia F, Scotchbond Multi-Purpose Plus/RelyX ARC, and Single Bond 2/Filtek Z350 Flow. To evaluate the nanoleakage patterns, IPS Empress Esthetic disks (5 mm circle divide and 1.2-mm thick) were bonded to enamel, and, after 24 h, the specimens were immersed in a 50% (w/v) solution of silver nitrate (24 h), fixed, dehydrated, and processed scanning electron microscopy (SEM). Results: None nanoleakage on interface of the groups that Single Bond 2 followed by the flowable composite were used. The highest percentage of nanoleakage was shown by the Excite/Variolink II protocol. Also, in all conditions tested, none silver nitrate uptake was observed between the leucite-reinforced ceramic and the resin luting cement. Conclusions: The use of a two-step etch-and-rinse adhesive with flowable composite was able to promote an adequate seal of the bond interface at the enamel. Moreover, the conventional dual-cured resin cements associated with simplified and dual-cured adhesives tested are also indicated to bond thin ceramics to enamel, since all presented low silver nitrate uptake. Microsc. Res. Tech., 2012. (c) 2011 Wiley Periodicals, Inc.
Subject: ceramic
adhesive system
resin cement
Country: EUA
Editor: Wiley-blackwell
Citation: Microscopy Research And Technique. Wiley-blackwell, v. 75, n. 5, n. 671, n. 676, 2012.
Rights: fechado
Identifier DOI: 10.1002/jemt.21110
Date Issue: 2012
Appears in Collections:Unicamp - Artigos e Outros Documentos

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