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dc.contributor.authorCastaneda-Espinosa, Juan Carlos
dc.contributor.authorPereira, Rosana Aparecida [UNESP]
dc.contributor.authorCavalcanti, Ana Paula
dc.contributor.authorLia Mondelli, Rafael Francisco [UNESP]
dc.date.accessioned2020-12-10T16:34:38Z
dc.date.available2020-12-10T16:34:38Z
dc.date.issued2007-11-01
dc.identifierhttp://dx.doi.org/10.1590/S1678-77572007000600008
dc.identifier.citationJournal Of Applied Oral Science. Bauru-sp: Univ Sao Paulo Fac Odontologia Bauru, v. 15, n. 6, p. 495-500, 2007.
dc.identifier.issn1678-7757
dc.identifier.urihttp://hdl.handle.net/11449/194691
dc.description.abstractThe purpose of this study was to evaluate the individual contraction force during polymerization of a composite resin (Z250), a flowable composite (Filtek Flow, FF) and a resin-modified glass ionomer cement (Vitrebond, VB), and the transmission of Z-250 composite resin polymerization contraction force through different thicknesses of FF and VB.. The experiment setup consisted of two identical parallel steel plates connected to a universal testing machine. One was fixed to a transversal base and the other to the equipment's cross head. The evaluated materials were inserted into a 1-mm space between the steel plates or between the inferior steel plate and a previously polymerized layer of an intermediate material (either FF or VB) adhered to the upper steel plate. The composite resin was light-cured with a halogen lamp with light intensity of 500 mW/cm(2) for 60 s. A force/time graph was obtained for each sample for up to 120 s. Seven groups of 10 specimens each were evaluated: G1: Z-250; G2: FF; G3: VB; G4: Z-250 through a 0.5-mm layer of FF; G5: Z-250 through a 1-mm layer of FF; G6: Z-250 through a 0.5-mm of VB; G7: Z-250 through a 1-mm layer of VB. They were averaged and compared using one-way ANOVA and Tukey test at a = 0.05. The obtained contraction forces were: GI:6.3N +/- 0.2N;G2:9.8 +/- 0.2N;G3:1.8 +/- 0.2N;G4:6.8N +/- 0.2N;G5:6.9N +/- 0.3N;G6: 4.0N +/- 0.4N and G7: 2.8N +/- 0.4N, The use of VB as an intermediate layer promoted a significant decrease in polymerization contraction force values of the restorative system, regardless of material thickness. The use of FF as an intermediate layer promoted an increase in polymerization contraction force values with both material thicknesses.en
dc.format.extent495-500
dc.language.isoeng
dc.publisherUniv Sao Paulo Fac Odontologia Bauru
dc.relation.ispartofJournal Of Applied Oral Science
dc.sourceWeb of Science
dc.subjectpolymerization contract-ion
dc.subjectcontraction force
dc.subjectcomposite
dc.subjectcomposite flow
dc.subjectresin-modified glass ionomer
dc.titleTransmission of composite polymerization contraction force through a flowable composite and a resin-modified glass ionomer cementen
dc.typeArtigo
dcterms.rightsHolderUniv Sao Paulo Fac Odontologia Bauru
dc.contributor.institutionUniv Maringai
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.description.affiliationUniv Maringai, Sch Dent, Discipline Dent, Maringa, Parana, Brazil
dc.description.affiliationSao Paulo State Univ, Bauru Sch Dent, Dept Operat Dent Endodont & Dent Mat, Bauru, SP, Brazil
dc.description.affiliationUnespSao Paulo State Univ, Bauru Sch Dent, Dept Operat Dent Endodont & Dent Mat, Bauru, SP, Brazil
dc.identifier.doi10.1590/S1678-77572007000600008
dc.identifier.scieloS1678-77572007000600008
dc.identifier.wosWOS:000256795100007
dc.rights.accessRightsAcesso aberto
dc.identifier.fileS1678-77572007000600008.pdf
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