Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/197114
Type: Artigo de periódico
Title: Halogen And Led Light Curing Of Composite: Temperature Increase And Knoop Hardness.
Author: Schneider, L F
Consani, S
Correr-Sobrinho, L
Correr, A B
Sinhoreti, M A
Abstract: This study assessed the Knoop hardness and temperature increase provided by three light curing units when using (1) the manufacturers' recommended times of photo-activation and (2) standardizing total energy density. One halogen--XL2500 (3M/ESPE)--and two light-emitting diode (LED) curing units--Freelight (3M/ESPE) and Ultrablue IS (DMC)--were used. A type-K thermocouple registered the temperature change produced by the composite photo-activation in a mold. Twenty-four hours after the photo-activation procedures, the composite specimens were submitted to a hardness test. Both temperature increase and hardness data were submitted to ANOVA and Tukey's test (5% significance). Using the first set of photo-activation conditions, the halogen unit produced a statistically higher temperature increase than did both LED units, and the Freelight LED resulted in a lower hardness than did the other curing units. When applying the second set of photo-activation conditions, the two LED units produced statistically greater temperature increase than did the halogen unit, whereas there were no statistical differences in hardness among the curing units.
Subject: Composite Resins
Dental Materials
Equipment Design
Hardness
Humans
Lighting
Materials Testing
Temperature
Thermometers
Time Factors
Rights: fechado
Identifier DOI: 10.1007/s00784-005-0028-x
Address: http://www.ncbi.nlm.nih.gov/pubmed/16402230
Date Issue: 2006
Appears in Collections:Unicamp - Artigos e Outros Documentos

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