Monomer conversion of composite dental resins photoactivated by a halogen lamp and a LED: a FT-Raman spectroscopy study

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metadata.dc.type:	Artigo de Periódico
Título :	Monomer conversion of composite dental resins photoactivated by a halogen lamp and a LED: a FT-Raman spectroscopy study
Otros títulos :	Química Nova
Autor :	Soares, Luís Eduardo Silva Rocha, Rick Martin, Airton Abrahão Pinheiro, Antonio Luiz Barbosa Zampieri, Marcelo
metadata.dc.creator:	Soares, Luís Eduardo Silva Rocha, Rick Martin, Airton Abrahão Pinheiro, Antonio Luiz Barbosa Zampieri, Marcelo
Resumen :	Eighteen circular blocks of resins cured either by a LED or a halogen lamp (20, 40 and 60 s), had their top (T) and bottom (B) surfaces studied using a FT-Raman spectrometer. Systematic changes in the intensity of the methacrylate C=C stretching mode at 1638 cm-1 as a function of exposure duration were observed. The calculated degree of conversion (DC) ranged from 45.0% (B) to 52.0% (T) and from 49.0% (B) to 55.0% (T) for the LED and halogen lamp, respectively. LED and halogen light produced similar DC values with 40 and 60 s of irradiation.
Palabras clave :	Composites Degree of conversion FT-Raman spectroscopy
URI :	http://www.repositorio.ufba.br/ri/handle/ri/4800
Fecha de publicación :	2005
Aparece en las colecciones:	Artigo Publicado em Periódico (Faculdade de Odontologia)

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