Publicação:
Effect of bleaching agent on dental ceramics roughness.

dc.contributor.authorVanderlei, Aleska D
dc.contributor.authorPassos, Sheila P
dc.contributor.authorSalazar-Marocho, Susana M
dc.contributor.authorPereira, Sarina Mb
dc.contributor.authorVásquez, Vanessa Zc
dc.contributor.authorBottino, Marco A
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-27T11:25:23Z
dc.date.available2014-05-27T11:25:23Z
dc.date.issued2010-12-01
dc.description.abstractThe aim of this study was to assess the effect of bleaching agents (10% and 16% carbamide peroxide) on the roughness of two dental ceramics in vitro, and to analyze the surface by scanning electronic microscopy (SEM). Two bleaching agents (10% and 16%/Whiteness, FGM Gel) and two microparticle feldspathic ceramics (Vita VM7 and Vita VM13) were used. Forty disks of Vita VM7 and Vita VM13 ceramic were manufactured, measuring 4 mm in diameter and 4 mm high, in accordance with the manufacturers' recommendations, and were divided into 4 groups (n = 10): (1) VM7 + Whiteness 10%; (2) VM7 + Whiteness 16%; (3) VM13 + Whiteness 10%; (4) VM13 + Whiteness 16%. The bleaching agent was applied for 8 hours a day for 15 days and during the intervals the test specimens were stored in distilled water at 37 degrees C. The roughness (Ra) of the test specimens was evaluated before and after exposure to the bleaching agents using a laser roughness meter and the topographic description was analyzed by SEM. The statistical analysis of roughness data showed significant differences in the VM7 groups, using paired t-test, p = 0.05 (VM7 + Whiteness 10%: p = 0.002; VM7 + Whiteness 16%: p = 0.001) and two-sample t-test (VM7 p = 0.047), and no significant difference was found among VM13 groups. The qualitative SEM analysis showed different degrees of surface changes. The results suggest that the roughness of the tested ceramic surfaces increased after exposure to the bleaching agents.en
dc.format.extent257-264
dc.identifierhttp://www.actaodontologicalat.com/archivo/v23n3/articulo14.pdf
dc.identifier.citationActa odontológica latinoamericana : AOL, v. 23, n. 3, p. 257-264, 2010.
dc.identifier.issn0326-4815
dc.identifier.lattes9234456003563666
dc.identifier.scopus2-s2.0-79959577675
dc.identifier.urihttp://hdl.handle.net/11449/72147
dc.language.isoeng
dc.relation.ispartofActa Odontológica Latinoamericana (AOL)
dc.relation.ispartofsjr0,264
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectaluminum silicate
dc.subjectdrug derivative
dc.subjectperoxide
dc.subjectpotassium derivative
dc.subjecttooth bleaching agent
dc.subjecturea
dc.subjecturea peroxide
dc.subjectVITA VM7
dc.subjectwater
dc.subjectceramics
dc.subjectchemistry
dc.subjectcomparative study
dc.subjectfeldspar
dc.subjectgel
dc.subjecthuman
dc.subjectlaser
dc.subjectmaterials testing
dc.subjectscanning electron microscopy
dc.subjectsurface property
dc.subjecttemperature
dc.subjecttime
dc.subjecttooth prosthesis
dc.subjectAluminum Silicates
dc.subjectCeramics
dc.subjectDental Porcelain
dc.subjectGels
dc.subjectHumans
dc.subjectLasers
dc.subjectMaterials Testing
dc.subjectMicroscopy, Electron, Scanning
dc.subjectPeroxides
dc.subjectPotassium Compounds
dc.subjectSurface Properties
dc.subjectTemperature
dc.subjectTime Factors
dc.subjectTooth Bleaching Agents
dc.subjectUrea
dc.subjectWater
dc.titleEffect of bleaching agent on dental ceramics roughness.en
dc.typeArtigo
dcterms.licensehttp://www.actaodontologicalat.com/peditorial.html
dspace.entity.typePublication
unesp.author.lattes9234456003563666
unesp.campusUniversidade Estadual Paulista (UNESP), Instituto de Ciência e Tecnologia, São José dos Campospt
unesp.departmentMateriais Odontológicos e Prótese - ICTpt

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