Influence of Photoinitiator on Accelerated Artificial Aging and Bond Strength of Experimental Resin Cements

Detalhes bibliográficos
Autor(a) principal: Righi,Helouise
Data de Publicação: 2018
Outros Autores: Costa,Ana Rosa, Oliveira,Dayane Carvalho Ramos Salles de, Abuna,Gabriel Flores, Sinhoreti,Mario Alexandre Coelho, Naufel,Fabiana Scarparo
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Brazilian Dental Journal
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-64402018000100082
Resumo: Abstract The goal of this study was to evaluate in vitro the effect of the photoinitiator phenylpropanedione (PPD), alone or combined with camphorquinone (CQ), on color stability of photoactivated resin cements and their bond strength to ceramics using a micro-shear test. Four resin cements were used: a commercial brand cement (RelyX Veneer®) and 3 experimental cements with different types and concentration of photoinitiators. For color analysis, ceramic discs were cemented on bovine dentin specimens to simulate indirect restorations (n=8) and were exposed to UV for 120 h and tested for color alteration using a reflectance spectrophotometer and the CIEL*a*b* system. Data were analyzed by Anova and Tukey’s test at 5% significance level. The color test results did not present statistically significant difference for the ∆E for all the studied cements, neither for ∆L, ∆a and ∆b. For the bond strength, all the studied cements showed statistically significant differences to each other, with the highest result for the RelyX Veneer® (29.07 MPa) cement, followed by the cement with CQ (21.74 MPa) and CQ+PPD (19.09 MPa) cement; the lowest result was obtained by the cement using only PPD as a photoinitiator (13.99 MPa). So, based on the studied parameters, PPD was not advantageous as photoinitiator of resin cements, because it showed a low value of bond strength to the ceramics and no superior color stability.
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spelling Influence of Photoinitiator on Accelerated Artificial Aging and Bond Strength of Experimental Resin Cementsphotoinitiatorcementscolorsbond strengthAbstract The goal of this study was to evaluate in vitro the effect of the photoinitiator phenylpropanedione (PPD), alone or combined with camphorquinone (CQ), on color stability of photoactivated resin cements and their bond strength to ceramics using a micro-shear test. Four resin cements were used: a commercial brand cement (RelyX Veneer®) and 3 experimental cements with different types and concentration of photoinitiators. For color analysis, ceramic discs were cemented on bovine dentin specimens to simulate indirect restorations (n=8) and were exposed to UV for 120 h and tested for color alteration using a reflectance spectrophotometer and the CIEL*a*b* system. Data were analyzed by Anova and Tukey’s test at 5% significance level. The color test results did not present statistically significant difference for the ∆E for all the studied cements, neither for ∆L, ∆a and ∆b. For the bond strength, all the studied cements showed statistically significant differences to each other, with the highest result for the RelyX Veneer® (29.07 MPa) cement, followed by the cement with CQ (21.74 MPa) and CQ+PPD (19.09 MPa) cement; the lowest result was obtained by the cement using only PPD as a photoinitiator (13.99 MPa). So, based on the studied parameters, PPD was not advantageous as photoinitiator of resin cements, because it showed a low value of bond strength to the ceramics and no superior color stability.Fundação Odontológica de Ribeirão Preto2018-02-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-64402018000100082Brazilian Dental Journal v.29 n.1 2018reponame:Brazilian Dental Journalinstname:Fundação Odontológica de Ribeirão Preto (FUNORP)instacron:FUNORP10.1590/0103-6440201801591info:eu-repo/semantics/openAccessRighi,HelouiseCosta,Ana RosaOliveira,Dayane Carvalho Ramos Salles deAbuna,Gabriel FloresSinhoreti,Mario Alexandre CoelhoNaufel,Fabiana Scarparoeng2018-03-14T00:00:00Zoai:scielo:S0103-64402018000100082Revistahttps://www.scielo.br/j/bdj/https://old.scielo.br/oai/scielo-oai.phpbdj@forp.usp.br||sergio@fosjc.unesp.br1806-47600103-6440opendoar:2018-03-14T00:00Brazilian Dental Journal - Fundação Odontológica de Ribeirão Preto (FUNORP)false
dc.title.none.fl_str_mv Influence of Photoinitiator on Accelerated Artificial Aging and Bond Strength of Experimental Resin Cements
title Influence of Photoinitiator on Accelerated Artificial Aging and Bond Strength of Experimental Resin Cements
spellingShingle Influence of Photoinitiator on Accelerated Artificial Aging and Bond Strength of Experimental Resin Cements
Righi,Helouise
photoinitiator
cements
colors
bond strength
title_short Influence of Photoinitiator on Accelerated Artificial Aging and Bond Strength of Experimental Resin Cements
title_full Influence of Photoinitiator on Accelerated Artificial Aging and Bond Strength of Experimental Resin Cements
title_fullStr Influence of Photoinitiator on Accelerated Artificial Aging and Bond Strength of Experimental Resin Cements
title_full_unstemmed Influence of Photoinitiator on Accelerated Artificial Aging and Bond Strength of Experimental Resin Cements
title_sort Influence of Photoinitiator on Accelerated Artificial Aging and Bond Strength of Experimental Resin Cements
author Righi,Helouise
author_facet Righi,Helouise
Costa,Ana Rosa
Oliveira,Dayane Carvalho Ramos Salles de
Abuna,Gabriel Flores
Sinhoreti,Mario Alexandre Coelho
Naufel,Fabiana Scarparo
author_role author
author2 Costa,Ana Rosa
Oliveira,Dayane Carvalho Ramos Salles de
Abuna,Gabriel Flores
Sinhoreti,Mario Alexandre Coelho
Naufel,Fabiana Scarparo
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Righi,Helouise
Costa,Ana Rosa
Oliveira,Dayane Carvalho Ramos Salles de
Abuna,Gabriel Flores
Sinhoreti,Mario Alexandre Coelho
Naufel,Fabiana Scarparo
dc.subject.por.fl_str_mv photoinitiator
cements
colors
bond strength
topic photoinitiator
cements
colors
bond strength
description Abstract The goal of this study was to evaluate in vitro the effect of the photoinitiator phenylpropanedione (PPD), alone or combined with camphorquinone (CQ), on color stability of photoactivated resin cements and their bond strength to ceramics using a micro-shear test. Four resin cements were used: a commercial brand cement (RelyX Veneer®) and 3 experimental cements with different types and concentration of photoinitiators. For color analysis, ceramic discs were cemented on bovine dentin specimens to simulate indirect restorations (n=8) and were exposed to UV for 120 h and tested for color alteration using a reflectance spectrophotometer and the CIEL*a*b* system. Data were analyzed by Anova and Tukey’s test at 5% significance level. The color test results did not present statistically significant difference for the ∆E for all the studied cements, neither for ∆L, ∆a and ∆b. For the bond strength, all the studied cements showed statistically significant differences to each other, with the highest result for the RelyX Veneer® (29.07 MPa) cement, followed by the cement with CQ (21.74 MPa) and CQ+PPD (19.09 MPa) cement; the lowest result was obtained by the cement using only PPD as a photoinitiator (13.99 MPa). So, based on the studied parameters, PPD was not advantageous as photoinitiator of resin cements, because it showed a low value of bond strength to the ceramics and no superior color stability.
publishDate 2018
dc.date.none.fl_str_mv 2018-02-01
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=S0103-64402018000100082
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-64402018000100082
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/0103-6440201801591
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 Fundação Odontológica de Ribeirão Preto
publisher.none.fl_str_mv Fundação Odontológica de Ribeirão Preto
dc.source.none.fl_str_mv Brazilian Dental Journal v.29 n.1 2018
reponame:Brazilian Dental Journal
instname:Fundação Odontológica de Ribeirão Preto (FUNORP)
instacron:FUNORP
instname_str Fundação Odontológica de Ribeirão Preto (FUNORP)
instacron_str FUNORP
institution FUNORP
reponame_str Brazilian Dental Journal
collection Brazilian Dental Journal
repository.name.fl_str_mv Brazilian Dental Journal - Fundação Odontológica de Ribeirão Preto (FUNORP)
repository.mail.fl_str_mv bdj@forp.usp.br||sergio@fosjc.unesp.br
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