Curing depth of composite resin light cured by LED and halogen light-curing units
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Data
2008-11-01
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Coorientador
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Maik Nauka/interperiodica/springer
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Artigo
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Resumo
The purpose of this study was to evaluate the polymerization effectiveness of a composite resin (Z-250) utilizing microhardness testing. In total, 80 samples with thicknesses of 2 and 4 mm were made, which were photoactivated by a conventional halogen light-curing unit, and light-curing units based on LED. The samples were stored in water distilled for 24 h at 37C. The Vickers microhardness was performed by the MMT-3 microhardness tester. The microhardness means obtained were as follows: G1, 72.88; G2, 69.35; G3, 67.66; G4, 69.71; G5, 70.95; G6, 75.19; G7, 72.96; and G8, 71.62. The data were submitted to an analysis of variance (ANOVA's test), adopting a significance level of 5%. The results showed that, in general, there were no statistical differences between the halogen and LED light-curing units used with the same parameters.
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Inglês
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Laser Physics. New York: Maik Nauka/interperiodica/springer, v. 18, n. 11, p. 1365-1369, 2008.