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Impacto de agentes clareadores caseiros e de consultório na estabilidade de cor de resinas compostas bulk fill

dc.contributor.authorAraújo, Rodrigo Máximo [UNESP]
dc.contributor.authorLemes, Elisangela Costa [UNESP]
dc.contributor.authorPachito, Rubens Ferri [UNESP]
dc.contributor.authorFeitosa, Fernanda Alves [UNESP]
dc.date.accessioned2019-10-06T15:40:24Z
dc.date.available2019-10-06T15:40:24Z
dc.date.issued2019-01-01
dc.identifierhttp://dx.doi.org/10.14295/bds.2018.v22i1.1675
dc.identifier.citationBrazilian Dental Science, v. 22, n. 1, p. 94-102, 2019.
dc.identifier.issn2178-6011
dc.identifier.urihttp://hdl.handle.net/11449/187568
dc.description.abstractObjective: This study compared different composites for color stability after exposure to at home and in-office bleaching gels. Material and Methods: Composite resin specimens (6mm diameterx2mm thickness) were manufactured according to the following groups (n=20): RC-Conventional; BF-Bulk Fill; RF-Flow; BFF-Bulk-Fill Flow. The surfaces were stained with coffee solution for 36h. A spectrophotometer was used to record the initial color (L*a*b*). Half of the specimens from each group underwent bleaching with 35% hydrogen peroxide (in-office) in three 45-minute applications. New color measurements were performed after 7, 14 and 21 days. The other half of the specimens underwent bleaching with 22% carbamide peroxide (at home) in 14 1-hour applications. Further color measurements were performed after 7 and 14 days. For comparison between the color coordinates in different periods, ANOVA for repeated measures was applied (α=5%). The color variation (ΔE) was calculated for each group. Results: For in-office bleaching, there were no significant differences between the periods b* coordinate of the RF group, and for L* and b* coordinates of the BFF group. For at home bleaching the groups BF and BFF showed no differences for the L* coordinate. For the other coordinates, there was difference between the initial periods and after 14 days. The ΔE variation presented higher values for the at home bleaching groups. For both whiteners the bulk-fill resins presented the greatest color variations. Conclusions: Bulk Fill resins do not guarantee greater color stability than the other composite resins tested, including conventional flow resin. The conventional composite resin showed the lower ΔE.en
dc.format.extent94-102
dc.language.isoeng
dc.relation.ispartofBrazilian Dental Science
dc.sourceScopus
dc.subjectColor
dc.subjectColor perception
dc.subjectComposite resins
dc.subjectHydrogen peroxide
dc.subjectTooth bleaching
dc.titleThe impact of at home and in-office bleaching agents on the color stability of bulk-fill composite resinsen
dc.titleImpacto de agentes clareadores caseiros e de consultório na estabilidade de cor de resinas compostas bulk fillpt
dc.typeArtigo
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.description.affiliationSão Paulo State University (Unesp) Institute of Science and Technology Department of Dental Materials and Prosthodontics
dc.description.affiliationSão Paulo State University (Unesp) Institute of Science and Technology
dc.description.affiliationUnespSão Paulo State University (Unesp) Institute of Science and Technology Department of Dental Materials and Prosthodontics
dc.description.affiliationUnespSão Paulo State University (Unesp) Institute of Science and Technology
dc.identifier.doi10.14295/bds.2018.v22i1.1675
dc.rights.accessRightsAcesso restrito
dc.identifier.scopus2-s2.0-85064499168
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