Effect of carbamide peroxide bleaching gel on composite resin flexural strength and microhardness

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorHatanaka, Gabriel Rodrigues
dc.creatorAbi-Rached, Filipe de Oliveira
dc.creatorde Almeida-Júnior, Antonio Alves
dc.creatorCruz, Carlos Alberto dos Santos
dc.date2014-05-27T11:30:11Z
dc.date2016-10-25T18:52:44Z
dc.date2014-05-27T11:30:11Z
dc.date2016-10-25T18:52:44Z
dc.date2013-08-20
dc.date.accessioned2017-04-06T02:35:02Z
dc.date.available2017-04-06T02:35:02Z
dc.identifierBrazilian Dental Journal, v. 24, n. 3, p. 263-266, 2013.
dc.identifier0103-6440
dc.identifier1806-4760
dc.identifierhttp://hdl.handle.net/11449/76299
dc.identifierhttp://acervodigital.unesp.br/handle/11449/76299
dc.identifier10.1590/0103-6440201302155
dc.identifierS0103-6440201302155
dc.identifier2-s2.0-84881512166.pdf
dc.identifier2-s2.0-84881512166
dc.identifierhttp://dx.doi.org/10.1590/0103-6440201302155
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/897000
dc.descriptionThis study investigated the effect of 16% carbamide peroxide (Whiteness Perfect/FGM) on the Vickers microhardness and flexural strength of the restorative composites Filtek Z100 (hybrid), Filtek Z350 (nanofill), Brilliant (micro-hybrid) and Opallis (micro-hybrid). Discshaped (4×2 mm; n=5) and bar-shaped (12×2×1 mm; n=10) specimens of each restorative material were randomly divided into 2 groups: (G1) 16 weeks stored in distilled water; (G2) 16 weeks stored in distilled water, with 16% carbamide peroxide application during 6 h per day for the last 4 weeks. The mechanical properties were evaluated using a Vickers microhardness tester and a mechanical testing machine. Data were analyzed by twoway ANOVA and Tukey's (HSD) post-hoc test (α=0.05). Filtek Z100 presented the highest microhardness value, followed by Filtek Z350 and finally by Brilliant and Opallis (p=0.00). Filtek Z100 and Brilliant exhibited the highest flexural strength value, followed by Filtek Z350 and Opallis (p=0.00). Bleaching treatment decreased significantly microhardness of Brilliant and Opallis (p=0.00). The flexural strength of all studied materials was not affected by the home bleaching (p=0.28).
dc.languageeng
dc.relationBrazilian Dental Journal
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectBleaching agents
dc.subjectComposite resins
dc.subjectHardness
dc.subjectStrength
dc.titleEffect of carbamide peroxide bleaching gel on composite resin flexural strength and microhardness
dc.typeOtro


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