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The effects of anti-oxidant agents as neutralizers of bleaching agents on enamel bond strength
Torres, Carlos Rocha Gomes; Koga, Alexandre Fuzuko Koga; Borges, Alessandra Bühler.
Afiliação
  • Torres, Carlos Rocha Gomes; São Paulo State University. School of Dentistry. Department of Restorative Dentistry. São José dos Campos. BR
  • Koga, Alexandre Fuzuko Koga; São Paulo State University. School of Dentistry. Department of Restorative Dentistry. São José dos Campos. BR
  • Borges, Alessandra Bühler; São Paulo State University. School of Dentistry. Department of Restorative Dentistry. São José dos Campos. BR
Braz. j. oral sci ; 5(16): 971-976, 2006. ilus, tab, graf
Artigo em Inglês | LILACS, BBO - Odontologia | ID: lil-472527
Biblioteca responsável: BR28.1
ABSTRACT
The aim of this study was to investigate the neutralizer effect of antioxidant agents on the bond strength of bleached enamel. Buccal enamel surfaces of 80 bovine incisors were divided into eight groups. The negative control group (NC) received no bleaching treatment and the other groups were bleached with 35% hydrogen peroxide gel for 30min., activated with a photocuring unit. Ten specimens were selected for the positive control group (PC) and received no anti-oxidant agents. The remaining bleached specimens received one of the six anti-oxidant agents, for 20min (10% Sodium Ascorbate–SA; Catalase–CA; Glutathione Peroxidase–GP; Acetone–AC; Ethanol–ET; 7% Sodium Bicarbonate– SB). Bonds were formed and shear bond test was carried out after 24h. The data were analyzed by one-way ANOVA and Tukey’s tests (á=5%). The PC group showed significantly lower bond strength mean than the NC group. All of the experimental groups showed bond strength means significantly lower than the NC group. The CA group showed significantly higher bond strength mean than the bleached PC group and the groups SA, GP, AC, ET and SB showed no significant differences compared to PC group. It was concluded that only the Catalase application resulted in significant increase of bond strengths in relation to the PC group and that none of the treatments was able to completely neutralize the deleterious effects of bleaching on bond strength.
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Texto completo: Disponível Coleções: Bases de dados internacionais Base de dados: BBO - Odontologia / LILACS Assunto principal: Clareamento Dental / Esmalte Dentário / Antioxidantes Limite: Animais Idioma: Inglês Revista: Braz. j. oral sci Assunto da revista: Odontologia Ano de publicação: 2006 Tipo de documento: Artigo País de afiliação: Brasil Instituição/País de afiliação: São Paulo State University/BR
Texto completo
Adicionar na Minha BVS
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Texto completo: Disponível Coleções: Bases de dados internacionais Base de dados: BBO - Odontologia / LILACS Assunto principal: Clareamento Dental / Esmalte Dentário / Antioxidantes Limite: Animais Idioma: Inglês Revista: Braz. j. oral sci Assunto da revista: Odontologia Ano de publicação: 2006 Tipo de documento: Artigo País de afiliação: Brasil Instituição/País de afiliação: São Paulo State University/BR