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Type: Artigo de periódico
Title: Evaluation Of Depth Of Cure And Knoop Hardness In A Dental Composite Photo-activated Using Different Methods.
Author: Obici, Andresa Carla
Sinhoreti, Mário Alexandre Coelho
Correr Sobrinho, Lourenço
de Goes, Mario Fernando
Consani, Simonides
Abstract: The aim of this study was to evaluate the depth of cure and Knoop hardness in the P60 composite resin photo-activated using different methods. A bipartite brass matrix (3 mm in diameter X 11 mm in height) was filled with the composite and photo-activation was performed using continuous light, exponential light, intermittent light, plasma arc curing (PAC) or light-emitting diodes (LED). After opening the matrix, the uncured material was removed with a steel spatula and the polymerized composite was measured using a pachymeter. The specimens were then included in self-curing acrylic resin and worn longitudinally and the hardness was measured on the surface and at depths of 1, 2, 3, 4 and 5 mm. The data were analyzed by ANOVA and Tukey's test (5%). The results showed that the depth of cure was higher with the intermittent light, followed by continuous light, exponential light, PAC and LED methods. Up to a depth of 2 mm, all methods revealed similar hardness values, but there were differences between them at other depths, at which LED demonstrated the lowest values followed by PAC.
Subject: Carbon Compounds, Inorganic
Composite Resins
Curing Lights, Dental
Dental Materials
Dental Polishing
Light-curing Of Dental Adhesives
Materials Testing
Radiation Dosage
Surface Properties
Time Factors
Citation: Brazilian Dental Journal. v. 15, n. 3, p. 199-203, 2004.
Rights: fechado
Identifier DOI: /S0103-64402004000300007
Date Issue: 2004
Appears in Collections:Unicamp - Artigos e Outros Documentos

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