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Type: Artigo de periódico
Title: Evaluation Of Silver Methenamine Method For Nanoleakage.
Author: Fernando de Goes, Mario
Montes, Marcos Antonio Japiassú Resende
Abstract: The aim of this study was to evaluate nanoleakage patterns following silver methenamine staining of restorations bonded with a total-etch single bottle system, a self-etching primer system and a total-etch single bottle system after collagen depletion. The dentin bonding systems used in this study were Prime and bond 2.1 (PB) and Clearfil SE Bond (CSEB). Cavities were made in grounded labial surfaces of 15 extracted bovine lower incisors, randomly divided into 3 Groups. Group 1 (PB), Group 2 (CSEB) and Group 3 (PB/SH) PB after collagen depletion with sodium hypochlorite (SH). The specimens were restored, sectioned and submitted to silver methenamine staining, polished and observed with low-vacuum back-scattered SEM. One way ANOVA and multiple-comparison Tukey's test were used for statistical analysis of the leakage scores. PB presented significantly greater silver deposition and a distinct pattern when compared to CSEB. No silver deposition was detected for PB after collagen depletion. The dentine bonding systems tested were unable to prevent nanoleakage when used according to the manufacturers' instructions; however, CSEB presented a lower level of silver deposition. Collagen depletion prior to PB application may prevent nanoleakage occurrence in dentine walls. Silver methenamine staining may be a useful method for detection of nanoleakage in dentine when the collagen fibrils remain exposed within the hybrid layers.
Subject: Acetone
Acid Etching, Dental
Analysis Of Variance
Coloring Agents
Dental Leakage
Dental Restoration, Permanent
Materials Testing
Microscopy, Electron, Scanning
Polymethacrylic Acids
Random Allocation
Resin Cements
Sodium Hypochlorite
Surface Properties
Citation: Journal Of Dentistry. v. 32, n. 5, p. 391-8, 2004-Jul.
Rights: fechado
Identifier DOI: 10.1016/j.jdent.2004.01.010
Date Issue: 2004
Appears in Collections:Unicamp - Artigos e Outros Documentos

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