Radiant exposure effects on physical properties of methacrylate - and silorane-composites

dc.contributor.authorCatelan, Anderson
dc.contributor.authorKawano, Yoshio
dc.contributor.authorSantos, Paulo Henrique dos [UNESP]
dc.contributor.authorAmbrosano, Gláucia Maria Bovi
dc.contributor.authorBedran-russo, Ana Karina
dc.contributor.authorAguiar, Flávio Henrique Baggio
dc.contributor.institutionUniversidade Estadual de Campinas (UNICAMP)
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversity of Illinois at Chicago College of Dentistry Department of Restorative Dentistry
dc.date.accessioned2015-02-02T12:39:36Z
dc.date.available2015-02-02T12:39:36Z
dc.date.issued2014-09-01
dc.description.abstractAIM: 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.en
dc.description.affiliationUniversidade Estadual de Campinas Piracicaba Dental School Department of Restorative Dentistry
dc.description.affiliationUniversidade de São Paulo Institute of Chemistry Department of Fundamental Chemistry
dc.description.affiliationUniversidade Estadual Paulista Araçatuba Dental School Department of Dental Materials and Prosthodontics
dc.description.affiliationUniversidade Estadual de Campinas Piracicaba Dental School Department of Social Dentistry
dc.description.affiliationUniversity of Illinois at Chicago College of Dentistry Department of Restorative Dentistry
dc.description.affiliationUnespUniversidade Estadual Paulista Araçatuba Dental School Department of Dental Materials and Prosthodontics
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.format.extent168-174
dc.identifierhttp://dx.doi.org/10.1590/1677-3225v13n3a02
dc.identifier.citationBrazilian Journal of Oral Sciences. Faculdade de Odontologia de Piracicaba - UNICAMP, v. 13, n. 3, p. 168-174, 2014.
dc.identifier.doi10.1590/1677-3225v13n3a02
dc.identifier.fileS1677-32252014000300168.pdf
dc.identifier.issn1677-3225
dc.identifier.lattes0493479801083622
dc.identifier.orcid0000-0002-4100-5153
dc.identifier.scieloS1677-32252014000300168
dc.identifier.urihttp://hdl.handle.net/11449/114504
dc.language.isoeng
dc.publisherFaculdade de Odontologia de Piracicaba - UNICAMP
dc.relation.ispartofBrazilian Journal of Oral Sciences
dc.relation.ispartofsjr0,131
dc.rights.accessRightsAcesso aberto
dc.sourceSciELO
dc.subjectcomposite resinsen
dc.subjectpolymerizationen
dc.subjectphysical propertiesen
dc.titleRadiant exposure effects on physical properties of methacrylate - and silorane-compositesen
dc.typeArtigo
unesp.author.lattes0493479801083622[3]
unesp.author.orcid0000-0002-4100-5153[3]
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Odontologia, Araçatubapt

Arquivos

Pacote Original
Agora exibindo 1 - 1 de 1
Carregando...
Imagem de Miniatura
Nome:
S1677-32252014000300168.pdf
Tamanho:
499.87 KB
Formato:
Adobe Portable Document Format