Effect of 10% carbamide peroxide dental bleaching on microhardness of filled and unfilled sealant materials

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dc.contributor.authorDe Alexandre, Rodrigo Sversut
dc.contributor.authorSundfeld, Renato Herman [UNESP]
dc.contributor.authorBriso, André Luiz Fraga [UNESP]
dc.contributor.authorBedran-Russo, Ana Karina B.
dc.contributor.authorValentino, Thiago Assunção
dc.contributor.authorSundefeld, Maria Lúcia Marçal Mazza [UNESP]
dc.contributor.institutionUniversidade Estadual de Campinas (UNICAMP)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionSchool of Dentistry
dc.date.accessioned2014-05-27T11:22:01Z
dc.date.available2014-05-27T11:22:01Z
dc.date.issued2006-11-01
dc.description.abstractPurpose: The purpose of this study was to quantitatively evaluate the effect of 10% carbamide peroxide on the microhardness of pit and fissure sealant materials. Methods: Fluroshield, Vitroseal Alfa, and one unfilled (Clinpro) sealants were placed in Teflon matrices (4 mm in diameter by 2 mm in height) and polymerized for 40 seconds. A total of 20 specimens were prepared for each material, in which half were assigned as the control group (stored in artificial saliva and no bleaching treatment). For the remaining half, Clarigel Gold bleaching agent (10% carbamide peroxide) was placed over the specimen surface for 4 hours/day during 4 weeks. When specimens were not under bleaching treatment, they were kept in artificial saliva. Afterwards, specimens were subjected to Knoop microhardness testing using a 25-g load for 5 seconds. Five measurements were made on the sealants' surfaces and then calculated in Knoop hardness values. The data were statistically analyzed by two-way analysis of variance and Tukey's tests with a 5% confidence level. Results: The results of this in vitro study showed that the application of a carbamide peroxide-based bleaching material significantly affected the microhardness values of filled sealant materials. The bleaching agent did not affect the microhardness of the unfilled sealant. CLINICAL SIGNIFICANCE: The results of this in vitro study suggest that the bleaching agents altered the surface hardness of filled sealant restorative materials. This could possibly lead to increased wear and surface roughness. © 2006, Copyright the authors.en
dc.description.affiliationDepartment of Restorative Dentistry Piracicaba School of Dentistry - Unicamp, Piracicaba
dc.description.affiliationDepartment of Restorative Dentistry Araçatuba School of Dentistry - Unesp, Araçatuba, SP
dc.description.affiliationDepartment of Restorative Dentistry University of Illinois School of Dentistry, Chicago, IL
dc.description.affiliationDepartment of Biostatistics Araçatuba School of Dentistry - Unesp, Araçatuba, SP
dc.description.affiliationFaculdade de Odontologia de Araçatuba - UNESP Departamento de Dentística, R. Jose Bonifacio, 1193, CEP 16015-050 Araçatuba, SP
dc.description.affiliationUnespDepartment of Restorative Dentistry Araçatuba School of Dentistry - Unesp, Araçatuba, SP
dc.description.affiliationUnespDepartment of Biostatistics Araçatuba School of Dentistry - Unesp, Araçatuba, SP
dc.description.affiliationUnespFaculdade de Odontologia de Araçatuba - UNESP Departamento de Dentística, R. Jose Bonifacio, 1193, CEP 16015-050 Araçatuba, SP
dc.format.extent273-278
dc.identifierhttp://dx.doi.org/10.1111/j.1708-8240.2006.00037.x
dc.identifier.citationJournal of Esthetic and Restorative Dentistry, v. 18, n. 5, p. 273-278, 2006.
dc.identifier.doi10.1111/j.1708-8240.2006.00037.x
dc.identifier.issn1496-4155
dc.identifier.lattes9693348671473011
dc.identifier.lattes5761956467234702
dc.identifier.scopus2-s2.0-33750391754
dc.identifier.urihttp://hdl.handle.net/11449/69192
dc.language.isoeng
dc.relation.ispartofJournal of Esthetic and Restorative Dentistry
dc.relation.ispartofjcr1.531
dc.relation.ispartofsjr0,753
dc.rights.accessRightsAcesso restrito
dc.sourceScopus
dc.subjectdrug derivative
dc.subjectfissure sealant
dc.subjectoxidizing agent
dc.subjectperoxide
dc.subjecturea
dc.subjecturea peroxide
dc.subjectchemistry
dc.subjectdental care
dc.subjectdrug combination
dc.subjectdrug effect
dc.subjecthardness
dc.subjectDrug Combinations
dc.subjectHardness
dc.subjectOxidants
dc.subjectPeroxides
dc.subjectPit and Fissure Sealants
dc.subjectTooth Bleaching
dc.subjectUrea
dc.titleEffect of 10% carbamide peroxide dental bleaching on microhardness of filled and unfilled sealant materialsen
dc.typeArtigo
dcterms.licensehttp://olabout.wiley.com/WileyCDA/Section/id-406071.html
unesp.author.lattes9693348671473011
unesp.author.lattes5761956467234702[3]
unesp.author.orcid0000-0002-6126-1760[3]
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Odontologia, Araçatubapt

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Artigos - Odontologia Restauradora - FOA