Spectrophotometric assessment of the effects of 10 percent carbamide peroxide on enamel translucency
Braz. oral res
; 22(1): 90-95, Jan.-Mar. 2008. graf, tab
Artigo
em Inglês
| LILACS
| ID: lil-480590
Biblioteca responsável:
BR1.1
ABSTRACT
Tooth shade results from the interaction between enamel color, enamel translucency and dentine color. A change in any of these parameters will change a tooths color. The objective of this study was to evaluate the changes occurring in enamel translucency during a tooth whitening process. Fourteen human tooth enamel fragments, with a mean thickness of 0.96 mm (± 0.3 mm), were subjected to a bleaching agent (10 percent carbamide peroxide) 8 hours per day for 28 days. The enamel fragment translucency was measured by a computer controlled spectrophotometer before and after the bleaching agent applications in accordance with ANSI Z80.3-1986 - American National Standard for Ophthalmics - nonprescription sunglasses and fashion eyewear-requirements. The measurements were statistically compared by the Mann-Whitney non-parametric test. A decrease was observed in the translucency of all specimens and, consequently, there was a decrease in transmittance values for all samples. It was observed that the bleaching procedure significantly changes the enamel translucency, making it more opaque.
Texto completo:
Disponível
Coleções:
Bases de dados internacionais
Base de dados:
LILACS
Assunto principal:
Peróxidos
/
Clareamento Dental
/
Ureia
/
Técnicas In Vitro
/
Oxidantes
/
Esmalte Dentário
Limite:
Humanos
Idioma:
Inglês
Revista:
Braz. oral res
Assunto da revista:
Odontologia
Ano de publicação:
2008
Tipo de documento:
Artigo
País de afiliação:
Brasil
Instituição/País de afiliação:
São Paulo Dental Association/BR
/
University of São Paulo/BR