Effect of thickness of indirect restoration and distance from the light-curing unit tip on the hardness of a dual-cured resin cement

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorde Paula, Andréia Bolzan
dc.creatorTango, Rubens Nisie
dc.creatorSinhoreti, Mário Alexandre Coelho
dc.creatorAlves, Marcelo Corrêa
dc.creatorPuppin-Rontani, Regina M.
dc.date2014-05-27T11:24:46Z
dc.date2016-10-25T18:28:58Z
dc.date2014-05-27T11:24:46Z
dc.date2016-10-25T18:28:58Z
dc.date2010-08-20
dc.date.accessioned2017-04-06T01:42:30Z
dc.date.available2017-04-06T01:42:30Z
dc.identifierBrazilian Dental Journal, v. 21, n. 2, p. 117-122, 2010.
dc.identifier0103-6440
dc.identifier1806-4760
dc.identifierhttp://hdl.handle.net/11449/71823
dc.identifierhttp://acervodigital.unesp.br/handle/11449/71823
dc.identifier10.1590/S0103-64402010000200005
dc.identifierS0103-64402010000200005
dc.identifier2-s2.0-77955629614.pdf
dc.identifier2-s2.0-77955629614
dc.identifierhttp://dx.doi.org/10.1590/S0103-64402010000200005
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/892755
dc.descriptionThis study evaluated the Knoop hardness and polymerization depth of a dual-cured resin cement, light-activated at different distances through different thicknesses of composite resin. One bovine incisor was embedded in resin and its buccal surface was flattened. Dentin was covered with PVC film where a mold (0.8-mm-thick and 5 mm diameter) was filled with cement and covered with another PVC film. Light curing (40 s) was carried out through resin discs (2, 3, 4 or 5 mm) with a halogen light positioned 0, 1, 2 or 3 mm from the resin surface. After storage, specimens were sectioned for hardness measurements (top, center, and bottom). Data were subjected to split-plot ANOVA and Tukey's test (α=0.05). The increase in resin disc thickness decreased cement hardness. The increase in the distance of the light curing tip decreased hardness at the top region. Specimens showed the lowest hardness values at the bottom, and the highest at the center. Resin cement hardness was influenced by the thickness of the indirect restoration and by the distance between the light-curing unit tip and the resin cement surface.
dc.languageeng
dc.relationBrazilian Dental Journal
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectComposite resin
dc.subjectDental materials
dc.subjectHardness
dc.subjectResin cements
dc.subjectFiltek Z250
dc.subjectresin
dc.subjectresin cement
dc.subjecttooth cement
dc.subjectanalysis of variance
dc.subjectanimal
dc.subjectcattle
dc.subjectchemistry
dc.subjectdental bonding
dc.subjectdental equipment
dc.subjectdental surgery
dc.subjectdrug effect
dc.subjectenamel
dc.subjecthardness
dc.subjectmethodology
dc.subjectnonparametric test
dc.subjectAnalysis of Variance
dc.subjectAnimals
dc.subjectCattle
dc.subjectComposite Resins
dc.subjectCuring Lights, Dental
dc.subjectDental Bonding, Light-Cured
dc.subjectDental Cements
dc.subjectDental Enamel
dc.subjectDental Restoration, Permanent
dc.subjectResin Cements
dc.subjectStatistics, Nonparametric
dc.titleEffect of thickness of indirect restoration and distance from the light-curing unit tip on the hardness of a dual-cured resin cement
dc.typeOtro


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