Effect of four different opalescence tooth-whitening products on enamel microhardness.
SADJ
; 63(5): 282-4, 286, 2008 Jun.
Article
em En
| MEDLINE
| ID: mdl-18811078
ABSTRACT
OBJECTIVES:
The purpose was to evaluate the effect of various Opalescence tooth-whitening products on enamel. METHODS AND MATERIALS Enamel blocks were exposed to Opalescence PF 10% Carbamide Peroxide (n = 10), Opalescence PF 20% Carbamide Peroxide (n = 10), Opalescence Trèswhite Supreme 10% Hydrogen Peroxide (n = 10) and Opalescence Quick PF 45% Carbamide Peroxide (n = 10) according to the manufacturer's instructions. The control group was enamel blocks (n = 10) kept in artificial saliva. The values were obtained before exposure and after the 14-days treatment period. Enamel blocks were kept in saliva between treatments. Indent marks on enamel blocks were examined using the scanning electron microscope for treatment effects.RESULTS:
All four different Opalescence products damaged enamel. The most damage was done when treated for a long period (112 hours). SEM images also showed damage to enamel by all 4 products. Opalescence with 10% and with 20% Carbamide Peroxide showed the highest damage, which also differed significantly (p < 0.05) from the saliva control group (p < 0.05; Tukey-Kramer Multiple comparison test).CONCLUSION:
All 4 Opalescence products damaged enamel. Higher damage was done by the 10% carbamide peroxide and 20% carbamide peroxide products because of the much longer exposure period (112 hours in comparison to 7 hours).
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Peróxidos
/
Clareamento Dental
/
Ureia
/
Oxidantes
/
Esmalte Dentário
/
Peróxido de Hidrogênio
Limite:
Humans
Idioma:
En
Revista:
SADJ
Ano de publicação:
2008
Tipo de documento:
Article