Dental bleaching agents with calcium and their effects on enamel microhardness and morphology
Braz. j. oral sci
; 14(2): 154-158, Apr.-June 2015. tab, ilus
Article
em En
| LILACS
| ID: lil-755043
Biblioteca responsável:
BR218.1
ABSTRACT
Aim:
To evaluate enamel microhardness and morphology after bleaching with hydrogen peroxide containing calcium in different concentrations.Methods:
One hundred specimens of human teeth were ground and polished and had the initial microhardness evaluated. The specimens were randomly assigned into five groups (n=20) Group 1 - Control group (no treatment); Group 2 - Home Peroxide 6% (without calcium); Group 3 - Home Peroxide 7.5% (without calcium); Group 4 - White Class 6% (with calcium); Group 5 - White Class 7.5% (with calcium). For each group, the bleaching was performed according to the manufacturer's specifications. The specimens were bleached once a day for 5 days and subjected to pH cycling. Microhardness and scanning electron microscopy (SEM) analysis were performed before and after bleaching.Results:
The results showed that groups submitted to bleaching treatment presented hardness loss compared to the control group. The group of 7.5% hydrogen peroxide with calcium showed a lower percentage of hardness loss in relation to other groups.Conclusion:
Calcium in association with a higher hydrogen peroxide concentration may decrease microhardness changes on enamel.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
LILACS
Assunto principal:
Clareamento Dental
/
Cálcio
/
Esmalte Dentário
/
Clareadores Dentários
/
Peróxido de Hidrogênio
Limite:
Female
/
Humans
/
Male
Idioma:
En
Revista:
Braz. j. oral sci
Assunto da revista:
ODONTOLOGIA
Ano de publicação:
2015
Tipo de documento:
Article
País de afiliação:
Brasil
País de publicação:
Brasil