Influence of the curing method on the post-polymerization shrinkage stress of a composite resin

dc.creatorCunha, LG
dc.creatorAlonso, RCB
dc.creatorde Souza, EJC
dc.creatorNeves, ACEC
dc.creatorCorrer-Sobrinho, L
dc.creatorSinhoreti, MAC
dc.date2008
dc.dateJUL-AUG
dc.date2014-11-16T00:38:38Z
dc.date2015-11-26T16:31:16Z
dc.date2014-11-16T00:38:38Z
dc.date2015-11-26T16:31:16Z
dc.date.accessioned2018-03-28T23:12:18Z
dc.date.available2018-03-28T23:12:18Z
dc.identifierJournal Of Applied Oral Science. Univ Sao Paulo Fac Odontologia Bauru, v. 16, n. 4, n. 266, n. 270, 2008.
dc.identifier1678-7757
dc.identifierWOS:000257769000007
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/80417
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/80417
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/80417
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1270163
dc.descriptionThe 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 methods.
dc.description16
dc.description4
dc.description266
dc.description270
dc.languageen
dc.publisherUniv Sao Paulo Fac Odontologia Bauru
dc.publisherBauru-sp
dc.publisherBrasil
dc.relationJournal Of Applied Oral Science
dc.relationJ. Appl. Oral Sci.
dc.rightsfechado
dc.sourceWeb of Science
dc.subjectcomposite resins
dc.subjectstress
dc.subjectpost-curing
dc.subjectModulated Photoactivation Methods
dc.subjectContraction Stress
dc.subjectLight-intensity
dc.subjectRestorative Composites
dc.subjectPlasma-arc
dc.subjectConversion
dc.titleInfluence of the curing method on the post-polymerization shrinkage stress of a composite resin
dc.typeArtículos de revistas


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