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Please use this identifier to cite or link to this item: http://acervodigital.unesp.br/handle/11449/10066
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dc.contributor.authorSostena, Michela M. D. S.-
dc.contributor.authorNogueira, Renata A.-
dc.contributor.authorGrandini, Carlos Roberto-
dc.contributor.authorMoraes, João Carlos Silos-
dc.date.accessioned2014-05-20T13:29:45Z-
dc.date.available2014-05-20T13:29:45Z-
dc.date.issued2009-11-01-
dc.identifierhttp://dx.doi.org/10.1590/S1678-77572009000600006-
dc.identifier.citationJournal of Applied Oral Science. Bauru-sp: Univ São Paulo Fac Odontologia Bauru, v. 17, n. 6, p. 570-573, 2009.-
dc.identifier.issn1678-7757-
dc.identifier.urihttp://hdl.handle.net/11449/10066-
dc.description.abstractObjective: This study evaluated the glass transition temperature (T(g)) and degree of conversion (DC) of a light-cured (Fill Magic) versus a chemically cured (Concise) orthodontic composite. Material and Methods: Anelastic relaxation spectroscopy was used for the first time to determine the T(g) of a dental composite, while the DC was evaluated by infrared spectroscopy. The light-cured composite specimens were irradiated with a commercial LED light-curing unit using different exposure times (40, 90 and 120 s). Results: Fill Magic presented lower T(g) than Concise (35-84 degrees C versus 135 degrees C), but reached a higher DC. Conclusions: The results of this study suggest that Fill Magic has lower T(g) than Concise due to its higher organic phase content, and that when this light-cured composite is used to bond orthodontic brackets, a minimum energy density of 7.8 J/cm(2) is necessary to reach adequate conversion level and obtain satisfactory adhesion.en
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.extent570-573-
dc.language.isoeng-
dc.publisherUniversidade de São Paulo (USP), Faculdade de Odontologia de Bauru-
dc.sourceWeb of Science-
dc.subjectOrthodontic compositeen
dc.subjectGlass transition temperatureen
dc.subjectDegree of conversionen
dc.subjectMechanical spectroscopyen
dc.subjectInfra-red spectroscopyen
dc.titleGlass transition and degree of conversion of a light-cured orthodontic compositeen
dc.typeoutro-
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)-
dc.description.affiliationSão Paulo State Univ, Dept Chem & Phys, Ilha Solteira, SP, Brazil-
dc.description.affiliationSão Paulo State Univ, Dept Phys, Bauru, SP, Brazil-
dc.description.affiliationUnespSão Paulo State Univ, Dept Chem & Phys, Ilha Solteira, SP, Brazil-
dc.description.affiliationUnespSão Paulo State Univ, Dept Phys, Bauru, SP, Brazil-
dc.identifier.scieloS1678-77572009000600006-
dc.identifier.wosWOS:000272950100006-
dc.rights.accessRightsAcesso aberto-
dc.identifier.fileS1678-77572009000600006-en.pdf-
dc.relation.ispartofJournal of Applied Oral Science-
dc.identifier.orcid0000-0002-3336-309Xpt
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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