Influence of light-exposure methods and depths of cavity on the microhardness of dual-cured core build-up resin composites

Detalhes bibliográficos
Autor(a) principal: YOSHIDA, Keiichi
Data de Publicação: 2014
Outros Autores: MENG, Xiangfeng
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Journal of applied oral science (Online)
Texto Completo: https://www.revistas.usp.br/jaos/article/view/80541
Resumo: Objective: The purpose of this study was to evaluate the Knoop hardness number (KHN) of dual-cured core build-up resin composites (DCBRCs) at 6 depths of cavity after 3 post-irradiation times by 4 light-exposure methods. Material and Methods: Five specimens each of DCBRCs (Clearfil DC Core Plus [DCP] and Unifil Core EM [UCE]) were filled in acrylic resin blocks with a semi-cylindrical cavity and light-cured using an LED light unit (power density: 1,000 mW/cm2)at the top surface by irradiation for 20 seconds (20 s), 40 seconds (40 s), bonding agent plus 20 seconds (B+20 s), or 40 seconds plus light irradiation of both sides of each acrylic resin block for 40 seconds each (120 s). KHN was measured at depths of 0.5, 2.0, 4.0, 6.0, 8.0, and 10.0 mm at 0.5 hours, 24 hours, and 7 days post-irradiation. Statistical analysis was performed using repeated measures ANOVA and Tukey's compromise post-hoc test with a significance level of p
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spelling Influence of light-exposure methods and depths of cavity on the microhardness of dual-cured core build-up resin composites Objective: The purpose of this study was to evaluate the Knoop hardness number (KHN) of dual-cured core build-up resin composites (DCBRCs) at 6 depths of cavity after 3 post-irradiation times by 4 light-exposure methods. Material and Methods: Five specimens each of DCBRCs (Clearfil DC Core Plus [DCP] and Unifil Core EM [UCE]) were filled in acrylic resin blocks with a semi-cylindrical cavity and light-cured using an LED light unit (power density: 1,000 mW/cm2)at the top surface by irradiation for 20 seconds (20 s), 40 seconds (40 s), bonding agent plus 20 seconds (B+20 s), or 40 seconds plus light irradiation of both sides of each acrylic resin block for 40 seconds each (120 s). KHN was measured at depths of 0.5, 2.0, 4.0, 6.0, 8.0, and 10.0 mm at 0.5 hours, 24 hours, and 7 days post-irradiation. Statistical analysis was performed using repeated measures ANOVA and Tukey's compromise post-hoc test with a significance level of pUniversidade de São Paulo. Faculdade de Odontologia de Bauru2014-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://www.revistas.usp.br/jaos/article/view/8054110.1590/1678-775720130359Journal of Applied Oral Science; Vol. 22 No. 1 (2014); 44-51Journal of Applied Oral Science; Vol. 22 Núm. 1 (2014); 44-51Journal of Applied Oral Science; v. 22 n. 1 (2014); 44-511678-77651678-7757reponame:Journal of applied oral science (Online)instname:Universidade de São Paulo (USP)instacron:USPenghttps://www.revistas.usp.br/jaos/article/view/80541/84204Copyright (c) 2014 Journal of Applied Oral Scienceinfo:eu-repo/semantics/openAccessYOSHIDA, Keiichi MENG, Xiangfeng 2014-05-08T13:28:52Zoai:revistas.usp.br:article/80541Revistahttp://www.scielo.br/jaosPUBhttps://www.revistas.usp.br/jaos/oai||jaos@usp.br1678-77651678-7757opendoar:2014-05-08T13:28:52Journal of applied oral science (Online) - Universidade de São Paulo (USP)false
dc.title.none.fl_str_mv Influence of light-exposure methods and depths of cavity on the microhardness of dual-cured core build-up resin composites
title Influence of light-exposure methods and depths of cavity on the microhardness of dual-cured core build-up resin composites
spellingShingle Influence of light-exposure methods and depths of cavity on the microhardness of dual-cured core build-up resin composites
YOSHIDA, Keiichi
title_short Influence of light-exposure methods and depths of cavity on the microhardness of dual-cured core build-up resin composites
title_full Influence of light-exposure methods and depths of cavity on the microhardness of dual-cured core build-up resin composites
title_fullStr Influence of light-exposure methods and depths of cavity on the microhardness of dual-cured core build-up resin composites
title_full_unstemmed Influence of light-exposure methods and depths of cavity on the microhardness of dual-cured core build-up resin composites
title_sort Influence of light-exposure methods and depths of cavity on the microhardness of dual-cured core build-up resin composites
author YOSHIDA, Keiichi
author_facet YOSHIDA, Keiichi
MENG, Xiangfeng
author_role author
author2 MENG, Xiangfeng
author2_role author
dc.contributor.author.fl_str_mv YOSHIDA, Keiichi
MENG, Xiangfeng
description Objective: The purpose of this study was to evaluate the Knoop hardness number (KHN) of dual-cured core build-up resin composites (DCBRCs) at 6 depths of cavity after 3 post-irradiation times by 4 light-exposure methods. Material and Methods: Five specimens each of DCBRCs (Clearfil DC Core Plus [DCP] and Unifil Core EM [UCE]) were filled in acrylic resin blocks with a semi-cylindrical cavity and light-cured using an LED light unit (power density: 1,000 mW/cm2)at the top surface by irradiation for 20 seconds (20 s), 40 seconds (40 s), bonding agent plus 20 seconds (B+20 s), or 40 seconds plus light irradiation of both sides of each acrylic resin block for 40 seconds each (120 s). KHN was measured at depths of 0.5, 2.0, 4.0, 6.0, 8.0, and 10.0 mm at 0.5 hours, 24 hours, and 7 days post-irradiation. Statistical analysis was performed using repeated measures ANOVA and Tukey's compromise post-hoc test with a significance level of p
publishDate 2014
dc.date.none.fl_str_mv 2014-01-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://www.revistas.usp.br/jaos/article/view/80541
10.1590/1678-775720130359
url https://www.revistas.usp.br/jaos/article/view/80541
identifier_str_mv 10.1590/1678-775720130359
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://www.revistas.usp.br/jaos/article/view/80541/84204
dc.rights.driver.fl_str_mv Copyright (c) 2014 Journal of Applied Oral Science
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Copyright (c) 2014 Journal of Applied Oral Science
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Universidade de São Paulo. Faculdade de Odontologia de Bauru
publisher.none.fl_str_mv Universidade de São Paulo. Faculdade de Odontologia de Bauru
dc.source.none.fl_str_mv Journal of Applied Oral Science; Vol. 22 No. 1 (2014); 44-51
Journal of Applied Oral Science; Vol. 22 Núm. 1 (2014); 44-51
Journal of Applied Oral Science; v. 22 n. 1 (2014); 44-51
1678-7765
1678-7757
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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