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
Artículo
en Inglés
| LILACS
| ID: lil-755043
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.
Texto completo:
Disponible
Índice:
LILACS (Américas)
Asunto principal:
Blanqueamiento de Dientes
/
Calcio
/
Esmalte Dental
/
Blanqueadores Dentales
/
Peróxido de Hidrógeno
Límite:
Femenino
/
Humanos
/
Masculino
Idioma:
Inglés
Revista:
Braz. j. oral sci
Asunto de la revista:
Odontología
Año:
2015
Tipo del documento:
Artículo
País de afiliación:
Brasil
Institución/País de afiliación:
2Universidade Veiga de Almeida/BR
/
Pontifícia Universidade Católica do Rio de Janeiro/BR
/
Universidade Federal do Rio de Janeiro/BR
/
Universidade Paulista/BR
/
Universidade de São Paulo/BR
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