Influence of photoactivation method and mold for restoration on the Knoop hardness of resin composite restorations

dc.creatorBrandt, WC
dc.creatorSilva-Concilio, LR
dc.creatorNeves, ACC
dc.creatorde Souza, EJC
dc.creatorSinhoreti, MAC
dc.date2013
dc.dateSEP
dc.date2014-08-01T18:31:45Z
dc.date2015-11-26T17:55:59Z
dc.date2014-08-01T18:31:45Z
dc.date2015-11-26T17:55:59Z
dc.date.accessioned2018-03-29T00:39:40Z
dc.date.available2018-03-29T00:39:40Z
dc.identifierLasers In Medical Science. Springer London Ltd, v. 28, n. 5, n. 1227, n. 1231, 2013.
dc.identifier0268-8921
dc.identifierWOS:000323742200002
dc.identifier10.1007/s10103-012-1184-2
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/80241
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/80241
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1291150
dc.descriptionThe aim of this study was to evaluate in vitro the Knoop hardness in the top and bottom of composite photo activated by different methods when different mold materials were used. Z250 (3M ESPE) and XL2500 halogen unit (3M ESPE) were used. For hardness test, conical restorations were made in extracted bovine incisors (tooth mold) and also metal mold (approximately 2 mm top diameter x 1.5 mm bottom diameter x 2 mm in height). Different photoactivation methods were tested: high-intensity continuous (HIC), low-intensity continuous (LIC), soft-start, or pulse-delay (PD), with constant radiant exposure. Knoop readings were performed on top and bottom restoration surfaces. Data were submitted to two-way ANOVA and Tukey's test (p = 0.05). On the top, regardless of the mold used, no significant difference in the Knoop hardness (Knoop hardness number, in kilograms-force per square millimeter) was observed between the photoactivation methods. On the bottom surface, the photoactivation method HIC shows higher means of hardness than LIC when tooth and metal were used. Significant differences of hardness on the top and in the bottom were detected between tooth and metal. The photoactivation method LIC and the material mold can interfere in the hardness values of composite restorations.
dc.description28
dc.description5
dc.description1227
dc.description1231
dc.languageen
dc.publisherSpringer London Ltd
dc.publisherLondon
dc.publisherInglaterra
dc.relationLasers In Medical Science
dc.relationLasers Med. Sci.
dc.rightsfechado
dc.rightshttp://www.springer.com/open+access/authors+rights?SGWID=0-176704-12-683201-0
dc.sourceWeb of Science
dc.subjectDental materials
dc.subjectComposite resins
dc.subjectSurface properties
dc.subjectHardness test
dc.subjectDental restoration
dc.subjectLight-intensity
dc.subjectBond Strength
dc.subjectPolymerization
dc.subjectConversion
dc.subjectAdaptation
dc.subjectShrinkage
dc.subjectStress
dc.subjectLaser
dc.titleInfluence of photoactivation method and mold for restoration on the Knoop hardness of resin composite restorations
dc.typeArtículos de revistas


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