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Type: Artigo de periódico
Title: Effect of the Insertion and Polymerization Technique in Composite Resin Restorations: Analysis of Marginal Gap by Atomic Force Microscopy
Author: da Silva, MAB
de Oliveira, GJPL
Tonholo, J
da Silva, JG
Santos, LD
dos Reis, JIL
Abstract: This in vitro study evaluated the marginal gap at the composite tooth/resin interface in class V cavities under the influence of two insertion techniques and a curing system by means of atomic force microscopy (AFM). Forty enamel and dentin cavities were prepared on the buccal surface in bovine teeth with quadratic forms measuring 2 mm X 2 mm and depth of 1.5 mm. The teeth were then divided into four groups: group A, 10 cavities were restored in one increment, light cured by halogen light; group B, 10 cavities filled with bulk filling, light cured by the light emitting diodes (LED); group C, 10 cavities were restored by the incremental technique, light cured by halogen light; group D, 10 cavities were restored by the incremental technique, light cured by the LED. The teeth underwent the polishing procedure and were analyzed by AFM for tooth/restoration interface evaluation. The data were compared between groups using the nonparametric Kruskall-Wallis and Mann-Whitney tests (p < 0.05). The results showed a statistically significant difference between groups A and B and groups A and C. It was concluded that no insertion and polymerization technique was able to completely seal the cavity.
Subject: dental marginal adaptation
dental curing light
atomic force microscopy
composite resin
dental surface analysis
Country: EUA
Editor: Cambridge Univ Press
Citation: Microscopy And Microanalysis. Cambridge Univ Press, v. 16, n. 6, n. 779, n. 784, 2010.
Rights: embargo
Identifier DOI: 10.1017/S1431927610093931
Date Issue: 2010
Appears in Collections:Unicamp - Artigos e Outros Documentos

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