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https://repositorio.ufba.br/handle/ri/4800
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) |
Ficheros en este ítem:
Fichero | Descripción | Tamaño | Formato | |
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23643.pdf | 302,82 kB | Adobe PDF | Visualizar/Abrir |
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