Dentin microhardness during and after whitening treatments

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual de Campinas (UNICAMP)-
Autor(es): dc.contributorUniversidade de São Paulo (USP)-
Autor(es): dc.contributorDepto. Odontol. Restauradora-D.-
Autor(es): dc.creatorMoreira De Freitas, Patricia-
Autor(es): dc.creatorPedroso Turssi, Cecilia-
Autor(es): dc.creatorTakeo Hara, Anderson-
Autor(es): dc.creatorCampos Serra, Mônica-
Data de aceite: dc.date.accessioned2022-08-04T22:01:27Z-
Data de disponibilização: dc.date.available2022-08-04T22:01:27Z-
Data de envio: dc.date.issued2022-04-28-
Data de envio: dc.date.issued2022-04-28-
Data de envio: dc.date.issued2004-05-01-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/219348-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/219348-
Descrição: dc.descriptionObjective: This in vitro study aimed to evaluate the effect of bleaching agents on dentin microhardness during and after bleaching. Method and materials: Specimens were randomly assigned to seven groups (n = 15): Nite White Excel 2 Z [NW] 10% and 22%; Rembrandt [REM] 10% and 22%; Opalescence [OPA] 10% and 20%; and a placebo agent. The 42-day whitening treatment consisted of daily application of the agents to the dentin surfaces for 8 hours, followed by immersion in artificial saliva for 16 hours. After the bleaching treatment, specimens were kept immersed in artificial saliva for 14 days. Microhardness was measured at baseline, 8 hours, and 7, 14, 21, 28, 35, and 42 days of bleaching and during the posttreatment period (7 and 14 days). Results: The analysis of variance for split-plot showed a significant effect on the interaction between bleaching agent and time. Tukey's test and regression analyses revealed that during the bleaching period, the agents NW 10%, NW 22%, and OPA 20%, which did not differ from each other, did not alter dentin microhardness, showing constant microhardness values. There were no differences among REM 10%, REM 22%, and OPA 10%, which showed significant reductions in microhardness after day 14 compared to other agents. After bleaching procedures, there was an increase in dentin microhardness for all groups. Conclusion: Throughout the bleaching treatment, depending on the agent applied, dentin showed a transitory decrease in microhardness values. In the posttreatment period, artificial saliva presented a remineralizing effect on the bleached surfaces.-
Descrição: dc.descriptionDepartment of Restorative Dentistry School of Dentistry of Piracicaba State University of Campinas, Piracicaba-
Descrição: dc.descriptionDepartment of Restorative Dentistry Sch. of Dent. of Ribeirao Preto State University of São Paulo, Ribeirão Preto-
Descrição: dc.descriptionFaculdade Odontol. Ribeirao P. Depto. Odontol. Restauradora-D., Ave. do Cafe s/n - Monte Alegre, CEP: 14040-904 Ribeirao Preto, SP-
Formato: dc.format411-417-
Idioma: dc.languageen-
Relação: dc.relationQuintessence International-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectBleaching-
Palavras-chave: dc.subjectCarbamide peroxide-
Palavras-chave: dc.subjectDentin-
Palavras-chave: dc.subjectMicrohardness-
Palavras-chave: dc.subjectSaliva-
Palavras-chave: dc.subjectVital teeth-
Título: dc.titleDentin microhardness during and after whitening treatments-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

Não existem arquivos associados a este item.