Study of theconversion degree of photo-cured resin composites by FTIR spectroscopy

Detalhes bibliográficos
Autor(a) principal: Menegazzo, Lívia Maluf
Data de Publicação: 2010
Outros Autores: Barbosa, José Carlos, Moraes, João Carlos Silos
Tipo de documento: Artigo
Idioma: por
Título da fonte: Revista Brasileira de Odontologia
Texto Completo: https://revista.aborj.org.br/index.php/rbo/article/view/142
Resumo: The purpose of this study was to evaluate the degree of conversion of three photo-cured composite resins (Fill Magic, TPH Spectrum and Te-Econom). One hundred and twenty samples were prepared, which were irradiated for 20 and 40 s using four light units (two halogens and two LEDs) of different power densities. The degree of conversion was evaluated from near infrared absorption data obtained in a Fourier transform infrared spectrometer. The results show that the degree of conversion increases with the irradiation time only when the resins were radiated with light units of power density smaller than 233 mW/cm2. All three composite resins achieved levels of conversion within the range typically observed in commercial light-cured resins.
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spelling Study of theconversion degree of photo-cured resin composites by FTIR spectroscopyEstudo do grau de conversão de resinas compostas fotoativadas por espectroscopia FTIRMEDICINA DENTÁRIA (ODONTOLOGIA)Grau de conversão; Compósitos fotoativados; Espectroscopia no infravermelhoCompositosThe purpose of this study was to evaluate the degree of conversion of three photo-cured composite resins (Fill Magic, TPH Spectrum and Te-Econom). One hundred and twenty samples were prepared, which were irradiated for 20 and 40 s using four light units (two halogens and two LEDs) of different power densities. The degree of conversion was evaluated from near infrared absorption data obtained in a Fourier transform infrared spectrometer. The results show that the degree of conversion increases with the irradiation time only when the resins were radiated with light units of power density smaller than 233 mW/cm2. All three composite resins achieved levels of conversion within the range typically observed in commercial light-cured resins.O objetivo do trabalho foi avaliar o grau de conversão de três resinas compostas fotoativadas (Fill Magic, TPH Spectrum e Te-Econom). Cento e vinte amostras foram preparadas, as quais foram irradiadas por 20 e 40s usando quatro fontes diferentes (duas halógenas e duas à base de LED). O grau de conversão foi avaliado a partir de dados de absorção no infravermelho próximo obtidos em um espectrofotômetro infravermelho. Os resultados mostram que o grau de conversão aumenta com o tempo de irradiação somente quando as resinas foram irradiadas com fontes de luz com densidade de potência menor do que 233 mW/cm2. Todas as três resinas alcançaram o nível de conversão tipicamente observado em resinas fotoativadas comerciais.Associação Brasileira de Odontologia - Seção Rio de JaneiroFapesp, CNPq, Capes e FundunespMenegazzo, Lívia MalufBarbosa, José CarlosMoraes, João Carlos Silos2010-08-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://revista.aborj.org.br/index.php/rbo/article/view/14210.18363/rbo.v67n1.p.24Revista Brasileira de Odontologia; v. 67, n. 1 (2010); 24Revista Brasileira de Odontologia; v. 67, n. 1 (2010); 241984-3747reponame:Revista Brasileira de Odontologiainstname:Associação Brasileira de Odontologia (ABO)instacron:ABOporhttps://revista.aborj.org.br/index.php/rbo/article/view/142/146Direitos autorais 2016 Revistasinfo:eu-repo/semantics/openAccess2010-08-06T20:53:14Zoai:revista_aborj_org_br.www.revista.aborj.org.br:article/142Revistahttps://revista.aborj.org.br/index.php/rboONGhttp://www.revista.aborj.org.br/index.php/rbo/oaihttps://revista.aborj.org.br/index.php/rbo/oai0034-72721984-3747opendoar:2010-08-06T20:53:14Revista Brasileira de Odontologia - Associação Brasileira de Odontologia (ABO)false
dc.title.none.fl_str_mv Study of theconversion degree of photo-cured resin composites by FTIR spectroscopy
Estudo do grau de conversão de resinas compostas fotoativadas por espectroscopia FTIR
title Study of theconversion degree of photo-cured resin composites by FTIR spectroscopy
spellingShingle Study of theconversion degree of photo-cured resin composites by FTIR spectroscopy
Menegazzo, Lívia Maluf
MEDICINA DENTÁRIA (ODONTOLOGIA)
Grau de conversão; Compósitos fotoativados; Espectroscopia no infravermelho
Compositos
title_short Study of theconversion degree of photo-cured resin composites by FTIR spectroscopy
title_full Study of theconversion degree of photo-cured resin composites by FTIR spectroscopy
title_fullStr Study of theconversion degree of photo-cured resin composites by FTIR spectroscopy
title_full_unstemmed Study of theconversion degree of photo-cured resin composites by FTIR spectroscopy
title_sort Study of theconversion degree of photo-cured resin composites by FTIR spectroscopy
author Menegazzo, Lívia Maluf
author_facet Menegazzo, Lívia Maluf
Barbosa, José Carlos
Moraes, João Carlos Silos
author_role author
author2 Barbosa, José Carlos
Moraes, João Carlos Silos
author2_role author
author
dc.contributor.none.fl_str_mv Fapesp, CNPq, Capes e Fundunesp
dc.contributor.author.fl_str_mv Menegazzo, Lívia Maluf
Barbosa, José Carlos
Moraes, João Carlos Silos
dc.subject.por.fl_str_mv MEDICINA DENTÁRIA (ODONTOLOGIA)
Grau de conversão; Compósitos fotoativados; Espectroscopia no infravermelho
Compositos
topic MEDICINA DENTÁRIA (ODONTOLOGIA)
Grau de conversão; Compósitos fotoativados; Espectroscopia no infravermelho
Compositos
description The purpose of this study was to evaluate the degree of conversion of three photo-cured composite resins (Fill Magic, TPH Spectrum and Te-Econom). One hundred and twenty samples were prepared, which were irradiated for 20 and 40 s using four light units (two halogens and two LEDs) of different power densities. The degree of conversion was evaluated from near infrared absorption data obtained in a Fourier transform infrared spectrometer. The results show that the degree of conversion increases with the irradiation time only when the resins were radiated with light units of power density smaller than 233 mW/cm2. All three composite resins achieved levels of conversion within the range typically observed in commercial light-cured resins.
publishDate 2010
dc.date.none.fl_str_mv 2010-08-05
dc.type.none.fl_str_mv

dc.type.driver.fl_str_mv info:eu-repo/semantics/article
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format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://revista.aborj.org.br/index.php/rbo/article/view/142
10.18363/rbo.v67n1.p.24
url https://revista.aborj.org.br/index.php/rbo/article/view/142
identifier_str_mv 10.18363/rbo.v67n1.p.24
dc.language.iso.fl_str_mv por
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dc.relation.none.fl_str_mv https://revista.aborj.org.br/index.php/rbo/article/view/142/146
dc.rights.driver.fl_str_mv Direitos autorais 2016 Revistas
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Direitos autorais 2016 Revistas
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Associação Brasileira de Odontologia - Seção Rio de Janeiro
publisher.none.fl_str_mv Associação Brasileira de Odontologia - Seção Rio de Janeiro
dc.source.none.fl_str_mv Revista Brasileira de Odontologia; v. 67, n. 1 (2010); 24
Revista Brasileira de Odontologia; v. 67, n. 1 (2010); 24
1984-3747
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reponame_str Revista Brasileira de Odontologia
collection Revista Brasileira de Odontologia
repository.name.fl_str_mv Revista Brasileira de Odontologia - Associação Brasileira de Odontologia (ABO)
repository.mail.fl_str_mv https://revista.aborj.org.br/index.php/rbo/oai
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