dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorBerger, Sandrine Bittencourt
dc.creatorPavan, Sabrina
dc.creatorPimenta Vidal, Cristina de Mattos
dc.creatorSantos, Paulo Henrique dos
dc.creatorGiannini, Marcelo
dc.creatorBedran-Russo, Ana Karina
dc.date2013-09-30T18:29:51Z
dc.date2014-05-20T13:43:35Z
dc.date2016-10-25T16:58:07Z
dc.date2013-09-30T18:29:51Z
dc.date2014-05-20T13:43:35Z
dc.date2016-10-25T16:58:07Z
dc.date2012-01-01
dc.date.accessioned2017-04-05T20:47:20Z
dc.date.available2017-04-05T20:47:20Z
dc.identifierActa Odontologica Scandinavica. London: Informa Healthcare, v. 70, n. 1, p. 56-60, 2012.
dc.identifier0001-6357
dc.identifierhttp://hdl.handle.net/11449/15211
dc.identifierhttp://acervodigital.unesp.br/handle/11449/15211
dc.identifier10.3109/00016357.2011.575176
dc.identifierWOS:000298328300009
dc.identifierhttp://dx.doi.org/10.3109/00016357.2011.575176
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/862251
dc.descriptionObjective. The purpose of this study was to evaluate the effect of the bleaching agents on the elastic modulus of bovine demineralized dentin matrix (EMDM). Materials and methods. Eighty-five slices were obtained from 17 bovine teeth. The slices were divided randomly into five experimental groups (n = 17): unbleached control group (CG), 4% hydrogen peroxide (HP4), 4% hydrogen peroxide + 0.05% Ca (HP4 + Ca), 7.5% hydrogen peroxide + ACP (HP7.5) and 10% carbamide peroxide (CP10). The HP4, HP4 + Ca and CP10 groups were treated with the bleaching agents for 8 h/day (14 days), while the samples of HP7.5 group were exposed to bleaching agent for 30 min twice a day (14 days). The CGwas kept in 100% humidity. After bleaching treatments, the enamel of the samples was removed and 85 dentin beams (0.5 x 1.7 x 7.0 mm) were prepared. Afterwards, the beams were immersed in 10% phosphoric acid solution (5 h) and rinsed with water (10 min). The beams were tested after 24 h, 7 and 14 days of storage in distilled water, using three-point bend method. Data were statistically analyzed using ANOVA and Fisher's test. Results. All bleaching treatments reduced the EMDM. After 14 days post-bleaching, the EMDM increased for HP4 and HP4+Ca groups. Conclusions. The use of bleaching agents promoted a decrease in EMDM, which indicates that the bleaching treatment interacts with the dentin organic matrix. The EMDM measurement for the specimens of the 7.5% hydrogen peroxide group that were immersed in water at 14 days post-bleaching did not recover the EMDM values when compared to the control group.
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.languageeng
dc.publisherInforma Healthcare
dc.relationActa Odontologica Scandinavica
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectelastic modulus
dc.subjectdentin
dc.subjectwhitening
dc.titleChanges in the stiffness of demineralized dentin following application of tooth whitening agents
dc.typeOtro


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