Is α-Tocopherol or Sodium Ascorbate Effective as Antioxidant on Fracture Resistance of Bleached Teeth?

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.creatorLeandrin, Thais P. [UNESP]-
Autor(es): dc.creatorAlencar, Cristiane M. [UNESP]-
Autor(es): dc.creatorVictorino, Keli R. [UNESP]-
Autor(es): dc.creatorDantas, Andréa Ar [UNESP]-
Autor(es): dc.creatorLima, Reinaldo O. [UNESP]-
Autor(es): dc.creatorMartins, Júlia C [UNESP]-
Autor(es): dc.creatorZaniboni, Joissi F. [UNESP]-
Autor(es): dc.creatorde Campos, Edson A. [UNESP]-
Autor(es): dc.creatorKuga, Milton C. [UNESP]-
Data de aceite: dc.date.accessioned2022-02-22T00:31:43Z-
Data de disponibilização: dc.date.available2022-02-22T00:31:43Z-
Data de envio: dc.date.issued2020-12-11-
Data de envio: dc.date.issued2020-12-11-
Data de envio: dc.date.issued2020-05-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.5005/jp-journals-10024-2831-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/200792-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/200792-
Descrição: dc.descriptionAIM: To evaluate the effect of two antioxidant formulations (sodium ascorbate and α-tocopherol) on fracture resistance of endodontically treated teeth. MATERIALS AND METHODS: Sixty human premolars were endodontically treated and divided into six groups (n = 10): G1 (negative control)-unbleached and restored with composite resin; G2 (positive control)-bleached in three sessions, using hydrogen peroxide (15 H2O2) plus titanium dioxide (TiO2) nanoparticles, photoactivated by LED laser system and restored with composite resin; G3-bleaching similar to G2, after the use of 10% sodium ascorbate gel for 24 hours and restored with composite resin; G4-similar to G3, but with the use of 10% sodium ascorbate solution and restored with composite resin; G5 and G6-similar to G3, but with the use of 10% α-tocopherol in alcohol or carbopol, respectively, and was also restored. A mechanical fracture resistance test was performed and the Kruskal-Wallis test was used to evaluate the results (α = 0.05). RESULTS: No statistical difference was observed in fracture resistance between groups (p > 0.05). Regarding the antioxidant and pharmaceutical formulation applied, no statistical difference was detected in any comparison (p > 0.05). The frequency of fractures considered favorable was higher in G1 and G3 compared to the other groups. CONCLUSION: The endodontically treated teeth bleached with 15 H2O2 plus TiO2 nanoparticles and photoactivated with the LED laser did not decrease the fracture resistance and the use of sodium ascorbate or α-tocopherol did not increase the crown fracture resistance. CLINICAL SIGNIFICANCE: The literature reports a significant reduction in the bond strength of restorations on the bleached dentin. Therefore, the use of antioxidant agents may have a promising effect on fracture resistance of endodontically treated teeth.-
Descrição: dc.descriptionDepartment of Restorative Dentistry Araraquara Dental School UNESP-Univ Estadual Paulista-
Descrição: dc.descriptionDepartment of Restorative Dentistry Araraquara Dental School UNESP-Univ Estadual Paulista-
Formato: dc.format481-485-
Idioma: dc.languageen-
Relação: dc.relationThe journal of contemporary dental practice-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectAntioxidants-
Palavras-chave: dc.subjectHydrogen peroxide-
Palavras-chave: dc.subjectSodium ascorbate Tooth bleaching.-
Palavras-chave: dc.subjectα-Tocopherol-
Título: dc.titleIs α-Tocopherol or Sodium Ascorbate Effective as Antioxidant on Fracture Resistance of Bleached Teeth?-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

Não existem arquivos associados a este item.