Effects of mouthwashes on Knoop hardness and surface roughness of dental composites after different immersion times
Braz. oral res
; 25(2): 168-173, Mar.-Apr. 2011. tab
Article
en En
| LILACS
| ID: lil-583852
Biblioteca responsable:
BR1.1
ABSTRACT
The aim of this in vitro study was to evaluate the effect of different mouthwashes on superficial roughness and Knoop hardness of two resin composites. Eighty specimens (6 mm Ø and 2 mm height) were prepared and divided into eight experimental groups (n = 10) according to the resin composites (4 Seasons and Esthet X), and storage solutions (G1 - Distilled water; G2 - Colgate Plax Overnight; G3 - Colgate Plax Alcohol Free; and G4 - Colgate Plax Whitening). The initial hardness and roughness readings (T1) were measured and then the specimens were stored in 2 mL of mouthwash for 12 h (T2) and 24 h (T3). The data were analyzed with repeat-measures two-way ANOVA and Tukey's test (α = 5 percent). Regardless of the type of solution and time of exposure, there was no statistical difference for roughness between the resins (p = 0.44). G4 and G8 presented higher roughness means than G1, G3, G5 and G7, after 12 and 24 hours of immersion. For Knoop microhardness analysis, there was a significant reduction for all groups after 12 hours and 24 hours. We conclude that the mouthwashes containing hydrogen peroxide and/or alcohol decrease the microhardness of the resins tested; however, the mouthwash containing hydrogen peroxide had a higher deleterious effect on roughness.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
LILACS
Asunto principal:
Resinas Compuestas
/
Antisépticos Bucales
Límite:
Humans
Idioma:
En
Revista:
Braz. oral res
Asunto de la revista:
ODONTOLOGIA
Año:
2011
Tipo del documento:
Article
País de afiliación:
Brasil
Pais de publicación:
Brasil