Effect of peroxide bleaching on the biaxial flexural strength and modulus of bovine dentin

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorCarvalho, Adriana Oliveira
dc.creatorAyres, Ana Paulaalmeida
dc.creatorAlmeida, LetÍcia Cunhaamaral Gonzaga de
dc.creatorBriso, André Luiz Fraga
dc.creatorRueggeberg, Frederick Allen
dc.creatorGiannini, Marcelo
dc.date2016-01-28T16:55:27Z
dc.date2016-10-25T21:28:15Z
dc.date2016-01-28T16:55:27Z
dc.date2016-10-25T21:28:15Z
dc.date2015
dc.date.accessioned2017-04-06T09:48:15Z
dc.date.available2017-04-06T09:48:15Z
dc.identifierEuropean Journal of Dentistry, v. 9, n. 2, p. 246-250, 2015.
dc.identifier1305-7456
dc.identifierhttp://hdl.handle.net/11449/133518
dc.identifierhttp://acervodigital.unesp.br/handle/11449/133518
dc.identifier10.4103/1305-7456.156845
dc.identifier5761956467234702
dc.identifierhttp://dx.doi.org/10.4103/1305-7456.156845
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/944048
dc.descriptionObjective: This study evaluated the effects of carbamide peroxide and hydrogen peroxide on the biaxial flexural strength and flexural modulus of bovine dentin. Materials and Methods: Thirty coronal dentin disks (0.5 mm thick × 6.0 mm diameter) were prepared from bovine teeth. The disks were randomly divided into three groups (n=10): A control group (unbleached), a group bleached with 10% carbamide peroxide (8 h at 37°C), and a group bleached with 38% hydrogen peroxide (three 10 min applications at 37°C). The specimens were tested in a biaxial flexural apparatus held in a universal testing machine at 1.27 mm/min until failure occurred, and the biaxial mechanical properties were calculated. For each test parameter, the data were statistically analyzed by Fisher's PLSD test (predetermined a = 0.05). Results: The group bleached with 38% hydrogen peroxide demonstrated significantly lower flexural strength than the unbleached control group. Hydrogen peroxide treatment resulted in a significantly lower flexural modulus compared with the control group and with carbamide peroxide bleaching. Conclusion: Exposure of dentin to hydrogen peroxide significantly reduced both the flexural strength and the flexural modulus compared with the no-treatment control, whereas exposure to carbamide peroxide did not significantly affect either parameter.
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionFundação Amparo à Pesquisa Estado de São Paulo (FAPESP)
dc.languageeng
dc.relationEuropean Journal of Dentistry
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectBiaxial flexural strength
dc.subjectBleaching
dc.subjectCarbamide peroxide
dc.subjectDentin
dc.subjectFlexural modulus
dc.subjectHydrogen peroxide
dc.titleEffect of peroxide bleaching on the biaxial flexural strength and modulus of bovine dentin
dc.typeOtro


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