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dc.contributor.CRUESPUniversidade Estadual de Campinaspt_BR
dc.typeArtigo de periódicopt_BR
dc.titleInfluence of the curing method on the post-polymerization shrinkage stress of a composite resinpt_BR
dc.contributor.authorCunha, LGpt_BR
dc.contributor.authorAlonso, RCBpt_BR
dc.contributor.authorde Souza, EJCpt_BR
dc.contributor.authorNeves, ACECpt_BR
dc.contributor.authorCorrer-Sobrinho, Lpt_BR
dc.contributor.authorSinhoreti, MACpt_BR
unicamp.authorCunha, Leonardo Goncalves Elias Claro Neves, Ana Christina Univ Taubate, Dept Prosthodont, Taubate, SP, Brazilpt_BR
unicamp.authorBruschi Alonso, Roberta Caroline Univ Estadual Campinas, Dept Restorat Dent, Dent Mat Div, Piracicaba Dent Sch, Piracicaba, SP, Brazilpt_BR
unicamp.authorde Souza, Eduardo Jos Carvalho, Jr. Univ Fed Bahia, Sch Dent, Salvador, BA, Brazilpt_BR
dc.subjectcomposite resinspt_BR
dc.subject.wosModulated Photoactivation Methodspt_BR
dc.subject.wosContraction Stresspt_BR
dc.subject.wosRestorative Compositespt_BR
dc.description.abstractThe aim of this study was to evaluate the effect of different curing methods on the stress generated by the polymerization shrinkage of a restorative composite in two moments: immediately after light exposure and after 5 min. Photoactivation was performed using two different light sources: (1) xenon plasma are (PAC) light (1,500 mW/cm(2) - 3s) and (2) a quartz- tungsten-halogen (QTH) light with three light-curing regimens: continuous exposure (40 s at 800 mW/cm(2) - CL); soft-start (10 s at 150 mW/cm(2) and 30 s at 800 mW/cm(2) - SS) and intermittent light [cycles of 4 s (2 s with light on at 600 mW/cm(2) and 2 s of light off), for 80s - IL]. The composite resin was applied between two 5-mm diameter metallic rods, mounted in a servohydraulic machine. The maximum stress was recorded immediately after light exposure (FF) and after 5 min (5F). The results were submitted to ANOVA and Tukey's test (5%). For each method, the results obtained in FF and 5F were, respectively: CL (3.58 and 4.46 MPa); SS (2.99 and 4.36 MPa); IL (3.11 and 4.32 MPa) and PAC (0.72 and 3.27 MPa). The stress generated by the polymerization shrinkage during light exposure can be associated with the photoactivation method used. A significant increase in the stress level was observed during the post-curing period up to 5 min, for all evaluated
dc.relation.ispartofJournal Of Applied Oral Sciencept_BR
dc.relation.ispartofabbreviationJ. Appl. Oral Sci.pt_BR
dc.publisherUniv Sao Paulo Fac Odontologia Baurupt_BR
dc.identifier.citationJournal Of Applied Oral Science. Univ Sao Paulo Fac Odontologia Bauru, v. 16, n. 4, n. 266, n. 270, 2008.pt_BR
dc.sourceWeb of Sciencept_BR
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