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
en En
| LILACS
| ID: lil-755043
Biblioteca responsable:
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.Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
LILACS
Asunto principal:
Blanqueamiento de Dientes
/
Calcio
/
Esmalte Dental
/
Blanqueadores Dentales
/
Peróxido de Hidrógeno
Límite:
Female
/
Humans
/
Male
Idioma:
En
Revista:
Braz. j. oral sci
Asunto de la revista:
ODONTOLOGIA
Año:
2015
Tipo del documento:
Article
País de afiliación:
Brasil
Pais de publicación:
Brasil