Influence of different shades and LED irradiance on the degree of conversion of composite resins

Detalhes bibliográficos
Autor(a) principal: Gaglianone,Lívia Aguilera
Data de Publicação: 2012
Outros Autores: Lima,Adriano Fonseca, Araújo,Larissa Sgarbosa Napoleão de, Cavalcanti,Andrea Nóbrega, Marchi,Giselle Maria
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Brazilian Oral Research
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-83242012000200013
Resumo: The aim of this study was to evaluate the degree of conversion (DC) of two composite resins with different shades that were light cured by light-emitting diodes (LEDs) of different irradiances. Specimens (5 mm ' 2 mm) were prepared with a nanofilled (Filtek Supreme - A2E, A2D, and WE) or microhybrid resin (Opallis - A2E, A2D, and EBleach Low) and were randomly divided into 12 groups (n = 5 each) according to the composite resin and light-curing unit (Elipar FreeLight 2, 1250 mW/cm²; Ultralume 5, 850 mW/cm²). After 24 h, the DC was measured on two surfaces (top and bottom) with Fourier Transform infrared spectroscopy (FTIR). Data were statistically analyzed with two-way ANOVA and Tukey test (a = 0.05). Statistical differences among the surfaces were observed in all experimental conditions, with higher values on the top surface. The microhybrid resin presented the highest DCs for shades A2E and A2D on the top surface. The LED with higher irradiance promoted better DCs. Taken together, the data indicate that the shade of a composite resin and the irradiance of the light source affect the monomeric conversion of the restorative material.
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spelling Influence of different shades and LED irradiance on the degree of conversion of composite resinsComposite ResinsPolymerizationCuring Lights, DentalThe aim of this study was to evaluate the degree of conversion (DC) of two composite resins with different shades that were light cured by light-emitting diodes (LEDs) of different irradiances. Specimens (5 mm ' 2 mm) were prepared with a nanofilled (Filtek Supreme - A2E, A2D, and WE) or microhybrid resin (Opallis - A2E, A2D, and EBleach Low) and were randomly divided into 12 groups (n = 5 each) according to the composite resin and light-curing unit (Elipar FreeLight 2, 1250 mW/cm²; Ultralume 5, 850 mW/cm²). After 24 h, the DC was measured on two surfaces (top and bottom) with Fourier Transform infrared spectroscopy (FTIR). Data were statistically analyzed with two-way ANOVA and Tukey test (a = 0.05). Statistical differences among the surfaces were observed in all experimental conditions, with higher values on the top surface. The microhybrid resin presented the highest DCs for shades A2E and A2D on the top surface. The LED with higher irradiance promoted better DCs. Taken together, the data indicate that the shade of a composite resin and the irradiance of the light source affect the monomeric conversion of the restorative material.Sociedade Brasileira de Pesquisa Odontológica - SBPqO2012-04-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-83242012000200013Brazilian Oral Research v.26 n.2 2012reponame:Brazilian Oral Researchinstname:Sociedade Brasileira de Pesquisa Odontológica (SBPqO)instacron:SBPQO10.1590/S1806-83242012005000002info:eu-repo/semantics/openAccessGaglianone,Lívia AguileraLima,Adriano FonsecaAraújo,Larissa Sgarbosa Napoleão deCavalcanti,Andrea NóbregaMarchi,Giselle Mariaeng2012-04-10T00:00:00Zoai:scielo:S1806-83242012000200013Revistahttps://www.scielo.br/j/bor/https://old.scielo.br/oai/scielo-oai.phppob@edu.usp.br||bor@sbpqo.org.br1807-31071806-8324opendoar:2012-04-10T00:00Brazilian Oral Research - Sociedade Brasileira de Pesquisa Odontológica (SBPqO)false
dc.title.none.fl_str_mv Influence of different shades and LED irradiance on the degree of conversion of composite resins
title Influence of different shades and LED irradiance on the degree of conversion of composite resins
spellingShingle Influence of different shades and LED irradiance on the degree of conversion of composite resins
Gaglianone,Lívia Aguilera
Composite Resins
Polymerization
Curing Lights, Dental
title_short Influence of different shades and LED irradiance on the degree of conversion of composite resins
title_full Influence of different shades and LED irradiance on the degree of conversion of composite resins
title_fullStr Influence of different shades and LED irradiance on the degree of conversion of composite resins
title_full_unstemmed Influence of different shades and LED irradiance on the degree of conversion of composite resins
title_sort Influence of different shades and LED irradiance on the degree of conversion of composite resins
author Gaglianone,Lívia Aguilera
author_facet Gaglianone,Lívia Aguilera
Lima,Adriano Fonseca
Araújo,Larissa Sgarbosa Napoleão de
Cavalcanti,Andrea Nóbrega
Marchi,Giselle Maria
author_role author
author2 Lima,Adriano Fonseca
Araújo,Larissa Sgarbosa Napoleão de
Cavalcanti,Andrea Nóbrega
Marchi,Giselle Maria
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Gaglianone,Lívia Aguilera
Lima,Adriano Fonseca
Araújo,Larissa Sgarbosa Napoleão de
Cavalcanti,Andrea Nóbrega
Marchi,Giselle Maria
dc.subject.por.fl_str_mv Composite Resins
Polymerization
Curing Lights, Dental
topic Composite Resins
Polymerization
Curing Lights, Dental
description The aim of this study was to evaluate the degree of conversion (DC) of two composite resins with different shades that were light cured by light-emitting diodes (LEDs) of different irradiances. Specimens (5 mm ' 2 mm) were prepared with a nanofilled (Filtek Supreme - A2E, A2D, and WE) or microhybrid resin (Opallis - A2E, A2D, and EBleach Low) and were randomly divided into 12 groups (n = 5 each) according to the composite resin and light-curing unit (Elipar FreeLight 2, 1250 mW/cm²; Ultralume 5, 850 mW/cm²). After 24 h, the DC was measured on two surfaces (top and bottom) with Fourier Transform infrared spectroscopy (FTIR). Data were statistically analyzed with two-way ANOVA and Tukey test (a = 0.05). Statistical differences among the surfaces were observed in all experimental conditions, with higher values on the top surface. The microhybrid resin presented the highest DCs for shades A2E and A2D on the top surface. The LED with higher irradiance promoted better DCs. Taken together, the data indicate that the shade of a composite resin and the irradiance of the light source affect the monomeric conversion of the restorative material.
publishDate 2012
dc.date.none.fl_str_mv 2012-04-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-83242012000200013
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-83242012000200013
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S1806-83242012005000002
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Sociedade Brasileira de Pesquisa Odontológica - SBPqO
publisher.none.fl_str_mv Sociedade Brasileira de Pesquisa Odontológica - SBPqO
dc.source.none.fl_str_mv Brazilian Oral Research v.26 n.2 2012
reponame:Brazilian Oral Research
instname:Sociedade Brasileira de Pesquisa Odontológica (SBPqO)
instacron:SBPQO
instname_str Sociedade Brasileira de Pesquisa Odontológica (SBPqO)
instacron_str SBPQO
institution SBPQO
reponame_str Brazilian Oral Research
collection Brazilian Oral Research
repository.name.fl_str_mv Brazilian Oral Research - Sociedade Brasileira de Pesquisa Odontológica (SBPqO)
repository.mail.fl_str_mv pob@edu.usp.br||bor@sbpqo.org.br
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