Persistence of resinous cement residues in dentin treated with different chemical removal protocols
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Data
2012-07-01
Autores
Kuga, Milton Carlos [UNESP]
Reis So, Marcus Vinicius
De Faria-Junior, Norberto Batista [UNESP]
Keine, Katia Cristina [UNESP]
Faria, Gisele [UNESP]
Fabricio, Semiramis
Matsumoto, Mariza Akemi
Título da Revista
ISSN da Revista
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Editor
Wiley-Blackwell
Resumo
The aim of this study was to evaluate the persistence of resin cement residues after dentin surface cleaning with different alcohol-based solutions or an essential oil (eucalyptol). Forty bovine teeth were sectioned in order to expose pulp chamber dentin to be washed with 1.0 mL of 2.5% sodium hypochlorite (NaOCl), followed by 0.1 mL of 17% EDTA application for 3 min, and final irrigation with 2.5% NaOCl. The specimens were air dried and resin-based cement was rubbed onto the dentine surface with a microbrush applicator. After 15 min, the surface was scrubbed with a cotton pellet and moistened with different dentin cleaning solutions, compounding the following groups: G195% ethanol, G270% ethanol, G370% isopropyl alcohol, or G4eucalyptol. The dentin was scrubbed until the cement residues could not be visually detected. Sections were then processed for SEM and evaluated at x 500 magnification. Scores were attributed to each image according to the area covered by residual sealer, and data were subjected to KruskalWallis at 5% significance. Eucalyptol promoted the most adequate dentin cleaning, although no statistical difference was detected amongst the groups (P > 0.05), except between the eucalyptol and 70% ethanol groups (P < 0.05). All the evaluated dentin cleaning solutions were unable to completely remove the cement residues from the dentin surface. Microsc. Res. Tech., 2012. (C) 2012 Wiley Periodicals, Inc.
Descrição
Palavras-chave
endodontics, calcium hydroxide, scanning electron microscopy, smear layer
Como citar
Microscopy Research and Technique. Hoboken: Wiley-blackwell, v. 75, n. 7, p. 982-985, 2012.