Effect of light curing unit on resin-modified glass-ionomer cements: a microhardness assessment

Detalhes bibliográficos
Autor(a) principal: Cefaly,Daniela Francisca Gigo
Data de Publicação: 2009
Outros Autores: Mello,Liliam Lucia Carrara Paes de, Wang,Linda, Lauris,José Roberto Pereira, D'Alpino,Paulo Henrique Perlatti
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Journal of applied oral science (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1678-77572009000300004
Resumo: OBJECTIVE: To evaluate the microhardness of resin-modified glass-ionomer cements (RMGICs) photoactivated with a blue light-emitting diode (LED) curing light. MATERIAL AND METHODS: Thirty specimens were distributed in 3 groups: Fuji II LC Improved/GC (RM1), Vitremer/3M ESPE (RM2) and Filtek Z250/ 3M ESPE (RM3). Two commercial light-curing units were used to polymerize the materials: LED/Ultrablue IS and a halogen light/XL3000 (QTH). After 24 h, Knoop microhardness test was performed. Data were submitted to three-way ANOVA and Tukey's test at a pre-set alpha of 0.05. RESULTS: At the top surface, no statistically significant difference (p>0.05) in the microhardness was seen when the LED and QTH lights were used for all materials. At the bottom surface, microhardness mean value of RM2 was significantly higher when the QTH light was used (p<0.05). For RM1, statistically significant higher values (p<0.05) were seen when the LED light was used. No statistically significant difference (p>0.05) was seen at the bottom surface for RM3, irrespective of the light used. Top-to-bottom surface comparison showed no statistically significant difference (p>0.05) for both RMGICs, regardless of the light used. For RM3, microhardness mean value at the top was significantly higher (p<0.05) than bottom microhardness when both curing units were used. CONCLUSION: The microhardness values seen when a LED light was used varied depending on the restorative material tested.
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spelling Effect of light curing unit on resin-modified glass-ionomer cements: a microhardness assessmentGlass-ionomer cementsMicrohardnessLight-curing unitsOBJECTIVE: To evaluate the microhardness of resin-modified glass-ionomer cements (RMGICs) photoactivated with a blue light-emitting diode (LED) curing light. MATERIAL AND METHODS: Thirty specimens were distributed in 3 groups: Fuji II LC Improved/GC (RM1), Vitremer/3M ESPE (RM2) and Filtek Z250/ 3M ESPE (RM3). Two commercial light-curing units were used to polymerize the materials: LED/Ultrablue IS and a halogen light/XL3000 (QTH). After 24 h, Knoop microhardness test was performed. Data were submitted to three-way ANOVA and Tukey's test at a pre-set alpha of 0.05. RESULTS: At the top surface, no statistically significant difference (p>0.05) in the microhardness was seen when the LED and QTH lights were used for all materials. At the bottom surface, microhardness mean value of RM2 was significantly higher when the QTH light was used (p<0.05). For RM1, statistically significant higher values (p<0.05) were seen when the LED light was used. No statistically significant difference (p>0.05) was seen at the bottom surface for RM3, irrespective of the light used. Top-to-bottom surface comparison showed no statistically significant difference (p>0.05) for both RMGICs, regardless of the light used. For RM3, microhardness mean value at the top was significantly higher (p<0.05) than bottom microhardness when both curing units were used. CONCLUSION: The microhardness values seen when a LED light was used varied depending on the restorative material tested.Faculdade De Odontologia De Bauru - USP2009-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1678-77572009000300004Journal of Applied Oral Science v.17 n.3 2009reponame:Journal of applied oral science (Online)instname:Universidade de São Paulo (USP)instacron:USP10.1590/S1678-77572009000300004info:eu-repo/semantics/openAccessCefaly,Daniela Francisca GigoMello,Liliam Lucia Carrara Paes deWang,LindaLauris,José Roberto PereiraD'Alpino,Paulo Henrique Perlattieng2009-05-19T00:00:00Zoai:scielo:S1678-77572009000300004Revistahttp://www.scielo.br/jaosPUBhttps://old.scielo.br/oai/scielo-oai.php||jaos@usp.br1678-77651678-7757opendoar:2009-05-19T00:00Journal of applied oral science (Online) - Universidade de São Paulo (USP)false
dc.title.none.fl_str_mv Effect of light curing unit on resin-modified glass-ionomer cements: a microhardness assessment
title Effect of light curing unit on resin-modified glass-ionomer cements: a microhardness assessment
spellingShingle Effect of light curing unit on resin-modified glass-ionomer cements: a microhardness assessment
Cefaly,Daniela Francisca Gigo
Glass-ionomer cements
Microhardness
Light-curing units
title_short Effect of light curing unit on resin-modified glass-ionomer cements: a microhardness assessment
title_full Effect of light curing unit on resin-modified glass-ionomer cements: a microhardness assessment
title_fullStr Effect of light curing unit on resin-modified glass-ionomer cements: a microhardness assessment
title_full_unstemmed Effect of light curing unit on resin-modified glass-ionomer cements: a microhardness assessment
title_sort Effect of light curing unit on resin-modified glass-ionomer cements: a microhardness assessment
author Cefaly,Daniela Francisca Gigo
author_facet Cefaly,Daniela Francisca Gigo
Mello,Liliam Lucia Carrara Paes de
Wang,Linda
Lauris,José Roberto Pereira
D'Alpino,Paulo Henrique Perlatti
author_role author
author2 Mello,Liliam Lucia Carrara Paes de
Wang,Linda
Lauris,José Roberto Pereira
D'Alpino,Paulo Henrique Perlatti
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Cefaly,Daniela Francisca Gigo
Mello,Liliam Lucia Carrara Paes de
Wang,Linda
Lauris,José Roberto Pereira
D'Alpino,Paulo Henrique Perlatti
dc.subject.por.fl_str_mv Glass-ionomer cements
Microhardness
Light-curing units
topic Glass-ionomer cements
Microhardness
Light-curing units
description OBJECTIVE: To evaluate the microhardness of resin-modified glass-ionomer cements (RMGICs) photoactivated with a blue light-emitting diode (LED) curing light. MATERIAL AND METHODS: Thirty specimens were distributed in 3 groups: Fuji II LC Improved/GC (RM1), Vitremer/3M ESPE (RM2) and Filtek Z250/ 3M ESPE (RM3). Two commercial light-curing units were used to polymerize the materials: LED/Ultrablue IS and a halogen light/XL3000 (QTH). After 24 h, Knoop microhardness test was performed. Data were submitted to three-way ANOVA and Tukey's test at a pre-set alpha of 0.05. RESULTS: At the top surface, no statistically significant difference (p>0.05) in the microhardness was seen when the LED and QTH lights were used for all materials. At the bottom surface, microhardness mean value of RM2 was significantly higher when the QTH light was used (p<0.05). For RM1, statistically significant higher values (p<0.05) were seen when the LED light was used. No statistically significant difference (p>0.05) was seen at the bottom surface for RM3, irrespective of the light used. Top-to-bottom surface comparison showed no statistically significant difference (p>0.05) for both RMGICs, regardless of the light used. For RM3, microhardness mean value at the top was significantly higher (p<0.05) than bottom microhardness when both curing units were used. CONCLUSION: The microhardness values seen when a LED light was used varied depending on the restorative material tested.
publishDate 2009
dc.date.none.fl_str_mv 2009-06-01
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=S1678-77572009000300004
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1678-77572009000300004
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S1678-77572009000300004
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 Faculdade De Odontologia De Bauru - USP
publisher.none.fl_str_mv Faculdade De Odontologia De Bauru - USP
dc.source.none.fl_str_mv Journal of Applied Oral Science v.17 n.3 2009
reponame:Journal of applied oral science (Online)
instname:Universidade de São Paulo (USP)
instacron:USP
instname_str Universidade de São Paulo (USP)
instacron_str USP
institution USP
reponame_str Journal of applied oral science (Online)
collection Journal of applied oral science (Online)
repository.name.fl_str_mv Journal of applied oral science (Online) - Universidade de São Paulo (USP)
repository.mail.fl_str_mv ||jaos@usp.br
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