The effects of exposure time on the surface microhardness of three dual-cured dental resin cements

Detalhes bibliográficos
Autor(a) principal: Aguiar, Tatiana C.
Data de Publicação: 2011
Outros Autores: Saad, José Roberto Cury [UNESP], Pinto, Shelon C. S., Calixto, Luiz R., Lima, Darlon M., Silva, Marcos A. S., Bandéca, Matheus C.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.3390/polym3030998
http://hdl.handle.net/11449/72644
Resumo: This study evaluated the exposure time of light-curing of the polymers used for cementation on microhardness test in different storage times. The polymers (specifically called resin cements) were RelyX ARC, RelyX U100, and SET. Five specimens of each group were prepared and photo-polymerized with exposure times of 20 s and 180 s, using a LED polymerization unit with wavelength of 440 ~ 480 nm and light output was consistently 1,500 mW/cm2. The Vickers hardness test was performed in a MMT-3 Microhardness Tester. Data were submitted to ANOVA and Tukey's test (α = 0.05). The values of RelyX ARC showed statistically significant difference to groups with light exposure when considering only chemical cure (p < 0.05). The groups with light exposure (20 s and 180 s) showed no significant difference between them (p > 0.05). The RelyX U100 cured only chemically showed statistically significant difference between 48 h and 7 days (p < 0.05). The SET resin cement showed no significant difference to groups without light exposure for all storage times (p > 0.05). The values of hardening of the dual-cured resin cements improved after setting by light and chemical activation demonstrating the importance of light curing. © 2011 by the authors.
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spelling The effects of exposure time on the surface microhardness of three dual-cured dental resin cementsHardnessPhoto-responsive polymersPolymersDental resinsExposure-timeLight curingLight exposureLight outputMicrohardness testerMicrohardness testsPhoto-responsive polymerResin cementStatistically significant differenceSurface microhardnessCementsChemical activationCuringDental materialsLight emitting diodesMicrohardnessResinsVickers hardnessVickers hardness testingThis study evaluated the exposure time of light-curing of the polymers used for cementation on microhardness test in different storage times. The polymers (specifically called resin cements) were RelyX ARC, RelyX U100, and SET. Five specimens of each group were prepared and photo-polymerized with exposure times of 20 s and 180 s, using a LED polymerization unit with wavelength of 440 ~ 480 nm and light output was consistently 1,500 mW/cm2. The Vickers hardness test was performed in a MMT-3 Microhardness Tester. Data were submitted to ANOVA and Tukey's test (α = 0.05). The values of RelyX ARC showed statistically significant difference to groups with light exposure when considering only chemical cure (p < 0.05). The groups with light exposure (20 s and 180 s) showed no significant difference between them (p > 0.05). The RelyX U100 cured only chemically showed statistically significant difference between 48 h and 7 days (p < 0.05). The SET resin cement showed no significant difference to groups without light exposure for all storage times (p > 0.05). The values of hardening of the dual-cured resin cements improved after setting by light and chemical activation demonstrating the importance of light curing. © 2011 by the authors.Department of Restorative Dentistry Faculty of Dentistry University of São Paulo State, Rua Humaitá no 1740, Centro, Araraquara-SP, CEP: 14.801-385Department of Periodontology Faculty of Dentistry University of São Paulo State, Rua Humaitá no 1740, Centro, Araraquara-SP, CEP: 14.801-385Department of Restorative Dentistry Faculty of Dentistry Federal University of Maranhão, Av. dos Portugueses S/N, São Luis-MA, CEP: 65.085-580Department of Post-graduation University of Maranhão, Av. José Montello no 1, Renascença II, São Luis-MA, CEP: 65.075-120Universidade Estadual Paulista (Unesp)Universidade Federal do Maranhão (UFMA)Aguiar, Tatiana C.Saad, José Roberto Cury [UNESP]Pinto, Shelon C. S.Calixto, Luiz R.Lima, Darlon M.Silva, Marcos A. S.Bandéca, Matheus C.2014-05-27T11:25:59Z2014-05-27T11:25:59Z2011-09-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article998-1005application/pdfhttp://dx.doi.org/10.3390/polym3030998Polymers, v. 3, n. 3, p. 998-1005, 2011.2073-4360http://hdl.handle.net/11449/7264410.3390/polym30309982-s2.0-836551916922-s2.0-83655191692.pdf1541792949750106Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengPolymers2.9350,852info:eu-repo/semantics/openAccess2023-10-28T06:09:07Zoai:repositorio.unesp.br:11449/72644Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T16:16:03.440431Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv The effects of exposure time on the surface microhardness of three dual-cured dental resin cements
title The effects of exposure time on the surface microhardness of three dual-cured dental resin cements
spellingShingle The effects of exposure time on the surface microhardness of three dual-cured dental resin cements
Aguiar, Tatiana C.
Hardness
Photo-responsive polymers
Polymers
Dental resins
Exposure-time
Light curing
Light exposure
Light output
Microhardness tester
Microhardness tests
Photo-responsive polymer
Resin cement
Statistically significant difference
Surface microhardness
Cements
Chemical activation
Curing
Dental materials
Light emitting diodes
Microhardness
Resins
Vickers hardness
Vickers hardness testing
title_short The effects of exposure time on the surface microhardness of three dual-cured dental resin cements
title_full The effects of exposure time on the surface microhardness of three dual-cured dental resin cements
title_fullStr The effects of exposure time on the surface microhardness of three dual-cured dental resin cements
title_full_unstemmed The effects of exposure time on the surface microhardness of three dual-cured dental resin cements
title_sort The effects of exposure time on the surface microhardness of three dual-cured dental resin cements
author Aguiar, Tatiana C.
author_facet Aguiar, Tatiana C.
Saad, José Roberto Cury [UNESP]
Pinto, Shelon C. S.
Calixto, Luiz R.
Lima, Darlon M.
Silva, Marcos A. S.
Bandéca, Matheus C.
author_role author
author2 Saad, José Roberto Cury [UNESP]
Pinto, Shelon C. S.
Calixto, Luiz R.
Lima, Darlon M.
Silva, Marcos A. S.
Bandéca, Matheus C.
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (Unesp)
Universidade Federal do Maranhão (UFMA)
dc.contributor.author.fl_str_mv Aguiar, Tatiana C.
Saad, José Roberto Cury [UNESP]
Pinto, Shelon C. S.
Calixto, Luiz R.
Lima, Darlon M.
Silva, Marcos A. S.
Bandéca, Matheus C.
dc.subject.por.fl_str_mv Hardness
Photo-responsive polymers
Polymers
Dental resins
Exposure-time
Light curing
Light exposure
Light output
Microhardness tester
Microhardness tests
Photo-responsive polymer
Resin cement
Statistically significant difference
Surface microhardness
Cements
Chemical activation
Curing
Dental materials
Light emitting diodes
Microhardness
Resins
Vickers hardness
Vickers hardness testing
topic Hardness
Photo-responsive polymers
Polymers
Dental resins
Exposure-time
Light curing
Light exposure
Light output
Microhardness tester
Microhardness tests
Photo-responsive polymer
Resin cement
Statistically significant difference
Surface microhardness
Cements
Chemical activation
Curing
Dental materials
Light emitting diodes
Microhardness
Resins
Vickers hardness
Vickers hardness testing
description This study evaluated the exposure time of light-curing of the polymers used for cementation on microhardness test in different storage times. The polymers (specifically called resin cements) were RelyX ARC, RelyX U100, and SET. Five specimens of each group were prepared and photo-polymerized with exposure times of 20 s and 180 s, using a LED polymerization unit with wavelength of 440 ~ 480 nm and light output was consistently 1,500 mW/cm2. The Vickers hardness test was performed in a MMT-3 Microhardness Tester. Data were submitted to ANOVA and Tukey's test (α = 0.05). The values of RelyX ARC showed statistically significant difference to groups with light exposure when considering only chemical cure (p < 0.05). The groups with light exposure (20 s and 180 s) showed no significant difference between them (p > 0.05). The RelyX U100 cured only chemically showed statistically significant difference between 48 h and 7 days (p < 0.05). The SET resin cement showed no significant difference to groups without light exposure for all storage times (p > 0.05). The values of hardening of the dual-cured resin cements improved after setting by light and chemical activation demonstrating the importance of light curing. © 2011 by the authors.
publishDate 2011
dc.date.none.fl_str_mv 2011-09-01
2014-05-27T11:25:59Z
2014-05-27T11:25:59Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://dx.doi.org/10.3390/polym3030998
Polymers, v. 3, n. 3, p. 998-1005, 2011.
2073-4360
http://hdl.handle.net/11449/72644
10.3390/polym3030998
2-s2.0-83655191692
2-s2.0-83655191692.pdf
1541792949750106
url http://dx.doi.org/10.3390/polym3030998
http://hdl.handle.net/11449/72644
identifier_str_mv Polymers, v. 3, n. 3, p. 998-1005, 2011.
2073-4360
10.3390/polym3030998
2-s2.0-83655191692
2-s2.0-83655191692.pdf
1541792949750106
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Polymers
2.935
0,852
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 998-1005
application/pdf
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
_version_ 1808128626914230272

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