Effect of photochemical activation of hydrogen peroxide bleaching gel with and without TiO2 and different wavelengths

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dc.contributor.authorCaneppele, Taciana Marco Ferraz [UNESP]
dc.contributor.authorTorres, Carlos Rocha Gomes [UNESP]
dc.contributor.authorChung, Adriana [UNESP]
dc.contributor.authorGoto, Edson Hidenobu [UNESP]
dc.contributor.authorLekevicius, Soraya Consolin [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-27T11:24:49Z
dc.date.available2014-05-27T11:24:49Z
dc.date.issued2010-10-21
dc.description.abstractAim: To evaluate the effect of photochemical activation of hydrogen peroxide (H2O2) bleaching gel with different wavelengths. Methods: In the study, 80 bovine incisors were used, which were stained in 25% soluble coffee and divided in 4 groups. The initial color was measured with the Easy Shade spectrophotometer by CIE Lab. An experimental 35% H2O2 bleaching gel was used, either with or without the presence of titanium dioxide (TiO2) pigment, associated with two light sources: G1 - Transparent Gel (TG) and no activation; G2 - Gel with TiO2 and activation with blue LED (l=470nm)\laser (Easy Bleach) appliance; G3 - Gel with TiO2 and activation with ultraviolet (l=345nm - UV); G4 - TG and activation with UV. Three applications of the gels were made for 10 min, and in each, 3 activations of 3 min, with interval of 30 s between them. The coloration was evaluated again and the variation in color perception (DE) was calculated. The data were submitted to one-way ANOVA and Tukey's test at 5% significance level. Results: There were significant differences between G1 and G4. The greatest E value was observed in G4 (13.37). There was no statistically significant difference (p>0.05) between the groups 2, 3 and 4. Conclusions: The presence of TiO2 particules in the bleaching gel did not interfere at the bleaching results.en
dc.description.affiliationDepartment of Restorative Dentistry São José dos Campos Dental School São Paulo State University - UNESP
dc.description.affiliationUnespDepartment of Restorative Dentistry São José dos Campos Dental School São Paulo State University - UNESP
dc.format.extent393-397
dc.identifierhttp://www.bibliotecadigital.unicamp.br/document/?code=43901
dc.identifier.citationBrazilian Journal of Oral Sciences, v. 9, n. 3, p. 393-397, 2010.
dc.identifier.file2-s2.0-77957943035.pdf
dc.identifier.issn1677-3217
dc.identifier.issn1677-3225
dc.identifier.lattes3135367849609938
dc.identifier.scopus2-s2.0-77957943035
dc.identifier.urihttp://hdl.handle.net/11449/71938
dc.language.isoeng
dc.relation.ispartofBrazilian Journal of Oral Sciences
dc.relation.ispartofsjr0,131
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectColor
dc.subjectHydrogen peroxide
dc.subjectTooth bleaching
dc.titleEffect of photochemical activation of hydrogen peroxide bleaching gel with and without TiO2 and different wavelengthsen
dc.typeArtigo
dcterms.licensehttp://www.scielo.br/revistas/bjos/iaboutj.htm
unesp.author.lattes3135367849609938[2]
unesp.author.orcid0000-0003-0521-7922[1]
unesp.author.orcid0000-0002-9485-5514[2]
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Ciência e Tecnologia, São José dos Campospt

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Artigos - Odontologia Restauradora - ICT