Idioma:

Reversal of compromised bonding to oxidized etched dentin

S. C. N. Lai Y. F Mak; G. S. P Cheung; R Osorio; M Toledano; Ricardo Marins de Carvalho; F. R Tay; David Henry Pashley

Journal of Dental Research v. 80, n. 10, p. 1919-1924, Oct. 2001

Item não circula. Consulte sua biblioteca.(Acessar)

Título:
Reversal of compromised bonding to oxidized etched dentin
Autor: S. C. N. Lai
Y. F Mak; G. S. P Cheung; R Osorio; M Toledano; Ricardo Marins de Carvalho; F. R Tay; David Henry Pashley
Assuntos: SÓDIO; VITAMINA C; LIGAS DE ALTA RESISTÊNCIA
É parte de: Journal of Dental Research v. 80, n. 10, p. 1919-1924, Oct. 2001
Descrição: The mechanism responsible for hydrogen-peroxide- or sodium-hypochlorite-induced reductions in dentin bond strength is unknown. This in vitro study tested the hypothesis that these oxidizing agents were responsible by attempting to reverse Vthe effect with sodium ascorbate, a reducing agent. Human dentin was treated with these oxidants before or after being acid-etched and with or without post-treatment with sodium ascorbate. They were bonded with either Single Bond or Excite. Hydrogen peroxide reduced the bond strengths of both adhesives, while sodium hypochlorite produced reduction in adhesion of only Single Bond (p < 0.05). Following treatment with sodium ascorbate, reductions in bond strength were reversed. Transmission and scanning electron microscopy showed partial removal of the demineralized collagen matrix only by sodium hypochlorite. The observed compromised bond strengths cannot be attributed to incomplete deproteinization and may be related to changes in the redox potential of the bonding substrates
Editor: Chicago
Data de criação/publicação: 2001
Formato: p. 1919-1924.
Idioma: Inglês

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