Radiant exposure effects on physical properties of methacrylate - and silorane-composites
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1590/1677-3225v13n3a02 http://hdl.handle.net/11449/114504 |
Resumo: | AIM: To evaluate the effect of different radiant exposures on the degree of conversion (DC), Knoop hardness number (KHN), plasticization (P), water sorption (WS), and solubility (S) of different monomer resin-based composites. METHODS: Circular specimens (5 x 2 mm) were manufactured from methacrylate and silorane composite resins, and light-cured at 19.8, 27.8, 39.6, and 55.6 J/cm2, using second-generation LED at 1,390 mW/cm2. After 24 h, DC was obtained using a FT-Raman spectrometer equipped with a Nd:YAG laser, KHN was measured with 50-g load for 15 s, and P was evaluated on the top and bottom surfaces by the percentage of hardness reduction after 24 h immersed in absolute alcohol. WS and S were determined according to ISO 4049. Data were subjected to statistical analysis (α=0.05). RESULTS: Methacrylate material presented higher DC, KHN, P, and WS than silorane (p<0.05). There was no difference in the S values (p>0.05). The increased radiant exposures improved only the KHN (p<0.05). In general, top surfaces showed higher DC and KHN than bottom, for both materials (p<0.05). The increase of the radiant exposure did not improve most physical properties of the composites and were monomer-base dependent. CONCLUSIONS: Chemical composition of the composite resins resulted in different physical properties behavior and could affect the clinical longevity of dental restorations, but overall these properties were not influenced by the different radiant exposures evaluated in the study. |
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Repositório Institucional da UNESP |
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2946 |
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Radiant exposure effects on physical properties of methacrylate - and silorane-compositescomposite resinspolymerizationphysical propertiesAIM: To evaluate the effect of different radiant exposures on the degree of conversion (DC), Knoop hardness number (KHN), plasticization (P), water sorption (WS), and solubility (S) of different monomer resin-based composites. METHODS: Circular specimens (5 x 2 mm) were manufactured from methacrylate and silorane composite resins, and light-cured at 19.8, 27.8, 39.6, and 55.6 J/cm2, using second-generation LED at 1,390 mW/cm2. After 24 h, DC was obtained using a FT-Raman spectrometer equipped with a Nd:YAG laser, KHN was measured with 50-g load for 15 s, and P was evaluated on the top and bottom surfaces by the percentage of hardness reduction after 24 h immersed in absolute alcohol. WS and S were determined according to ISO 4049. Data were subjected to statistical analysis (α=0.05). RESULTS: Methacrylate material presented higher DC, KHN, P, and WS than silorane (p<0.05). There was no difference in the S values (p>0.05). The increased radiant exposures improved only the KHN (p<0.05). In general, top surfaces showed higher DC and KHN than bottom, for both materials (p<0.05). The increase of the radiant exposure did not improve most physical properties of the composites and were monomer-base dependent. CONCLUSIONS: Chemical composition of the composite resins resulted in different physical properties behavior and could affect the clinical longevity of dental restorations, but overall these properties were not influenced by the different radiant exposures evaluated in the study.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Universidade Estadual de Campinas Piracicaba Dental School Department of Restorative DentistryUniversidade de São Paulo Institute of Chemistry Department of Fundamental ChemistryUniversidade Estadual Paulista Araçatuba Dental School Department of Dental Materials and ProsthodonticsUniversidade Estadual de Campinas Piracicaba Dental School Department of Social DentistryUniversity of Illinois at Chicago College of Dentistry Department of Restorative DentistryUniversidade Estadual Paulista Araçatuba Dental School Department of Dental Materials and ProsthodonticsFaculdade de Odontologia de Piracicaba - UNICAMPUniversidade Estadual de Campinas (UNICAMP)Universidade de São Paulo (USP)Universidade Estadual Paulista (Unesp)University of Illinois at Chicago College of Dentistry Department of Restorative DentistryCatelan, AndersonKawano, YoshioSantos, Paulo Henrique dos [UNESP]Ambrosano, Gláucia Maria BoviBedran-russo, Ana KarinaAguiar, Flávio Henrique Baggio2015-02-02T12:39:36Z2015-02-02T12:39:36Z2014-09-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article168-174application/pdfhttp://dx.doi.org/10.1590/1677-3225v13n3a02Brazilian Journal of Oral Sciences. Faculdade de Odontologia de Piracicaba - UNICAMP, v. 13, n. 3, p. 168-174, 2014.1677-3225http://hdl.handle.net/11449/11450410.1590/1677-3225v13n3a02S1677-32252014000300168S1677-32252014000300168.pdf04934798010836220000-0002-4100-5153SciELOreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengBrazilian Journal of Oral Sciences0,131info:eu-repo/semantics/openAccess2024-01-20T06:34:25Zoai:repositorio.unesp.br:11449/114504Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-01-20T06:34:25Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Radiant exposure effects on physical properties of methacrylate - and silorane-composites |
title |
Radiant exposure effects on physical properties of methacrylate - and silorane-composites |
spellingShingle |
Radiant exposure effects on physical properties of methacrylate - and silorane-composites Catelan, Anderson composite resins polymerization physical properties |
title_short |
Radiant exposure effects on physical properties of methacrylate - and silorane-composites |
title_full |
Radiant exposure effects on physical properties of methacrylate - and silorane-composites |
title_fullStr |
Radiant exposure effects on physical properties of methacrylate - and silorane-composites |
title_full_unstemmed |
Radiant exposure effects on physical properties of methacrylate - and silorane-composites |
title_sort |
Radiant exposure effects on physical properties of methacrylate - and silorane-composites |
author |
Catelan, Anderson |
author_facet |
Catelan, Anderson Kawano, Yoshio Santos, Paulo Henrique dos [UNESP] Ambrosano, Gláucia Maria Bovi Bedran-russo, Ana Karina Aguiar, Flávio Henrique Baggio |
author_role |
author |
author2 |
Kawano, Yoshio Santos, Paulo Henrique dos [UNESP] Ambrosano, Gláucia Maria Bovi Bedran-russo, Ana Karina Aguiar, Flávio Henrique Baggio |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual de Campinas (UNICAMP) Universidade de São Paulo (USP) Universidade Estadual Paulista (Unesp) University of Illinois at Chicago College of Dentistry Department of Restorative Dentistry |
dc.contributor.author.fl_str_mv |
Catelan, Anderson Kawano, Yoshio Santos, Paulo Henrique dos [UNESP] Ambrosano, Gláucia Maria Bovi Bedran-russo, Ana Karina Aguiar, Flávio Henrique Baggio |
dc.subject.por.fl_str_mv |
composite resins polymerization physical properties |
topic |
composite resins polymerization physical properties |
description |
AIM: To evaluate the effect of different radiant exposures on the degree of conversion (DC), Knoop hardness number (KHN), plasticization (P), water sorption (WS), and solubility (S) of different monomer resin-based composites. METHODS: Circular specimens (5 x 2 mm) were manufactured from methacrylate and silorane composite resins, and light-cured at 19.8, 27.8, 39.6, and 55.6 J/cm2, using second-generation LED at 1,390 mW/cm2. After 24 h, DC was obtained using a FT-Raman spectrometer equipped with a Nd:YAG laser, KHN was measured with 50-g load for 15 s, and P was evaluated on the top and bottom surfaces by the percentage of hardness reduction after 24 h immersed in absolute alcohol. WS and S were determined according to ISO 4049. Data were subjected to statistical analysis (α=0.05). RESULTS: Methacrylate material presented higher DC, KHN, P, and WS than silorane (p<0.05). There was no difference in the S values (p>0.05). The increased radiant exposures improved only the KHN (p<0.05). In general, top surfaces showed higher DC and KHN than bottom, for both materials (p<0.05). The increase of the radiant exposure did not improve most physical properties of the composites and were monomer-base dependent. CONCLUSIONS: Chemical composition of the composite resins resulted in different physical properties behavior and could affect the clinical longevity of dental restorations, but overall these properties were not influenced by the different radiant exposures evaluated in the study. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-09-01 2015-02-02T12:39:36Z 2015-02-02T12:39:36Z |
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/10.1590/1677-3225v13n3a02 Brazilian Journal of Oral Sciences. Faculdade de Odontologia de Piracicaba - UNICAMP, v. 13, n. 3, p. 168-174, 2014. 1677-3225 http://hdl.handle.net/11449/114504 10.1590/1677-3225v13n3a02 S1677-32252014000300168 S1677-32252014000300168.pdf 0493479801083622 0000-0002-4100-5153 |
url |
http://dx.doi.org/10.1590/1677-3225v13n3a02 http://hdl.handle.net/11449/114504 |
identifier_str_mv |
Brazilian Journal of Oral Sciences. Faculdade de Odontologia de Piracicaba - UNICAMP, v. 13, n. 3, p. 168-174, 2014. 1677-3225 10.1590/1677-3225v13n3a02 S1677-32252014000300168 S1677-32252014000300168.pdf 0493479801083622 0000-0002-4100-5153 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Brazilian Journal of Oral Sciences 0,131 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
168-174 application/pdf |
dc.publisher.none.fl_str_mv |
Faculdade de Odontologia de Piracicaba - UNICAMP |
publisher.none.fl_str_mv |
Faculdade de Odontologia de Piracicaba - UNICAMP |
dc.source.none.fl_str_mv |
SciELO 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_ |
1799965676162514944 |