Artículos de revistas
Effect Of Different Mouthrinses On Knoop Hardness Of A Restorative Composite.
Registro en:
American Journal Of Dentistry. v. 18, n. 6, p. 338-40, 2005-Dec.
0894-8275
16433403
Autor
Cavalcanti, Andrea Nóbrega
Mitsui, Fabio Hiroyuki Ogata
Ambrosano, Glaucia Maria Bovi
Mathias, Paula
Marchi, Gisell Maria
Institución
Resumen
To evaluate the effect of mouthrinses on Knoop hardness number (KHN) of a restorative composite, at different exposure times. 50 composite specimens (TPH Spectrum) were randomly allocated into five groups (n=10): distilled water; Listerine; Reach; Plax and Periogard. The samples were immersed daily for 14 days in 20 ml of the respective solution for 2 minutes twice a day (with a 12-hour interval between exposures). Measurements were carried out at four different times: 1 hour after sample preparation, 1, 7 and 14 days after the first immersion in the solutions. Statistical analyses (Repeated Measures ANOVA and Tukey test at 0.05 significance level) showed significant differences among KHN of t wo experimental groups (mean values): Listerine (49.17) and Plax (51.14). There was n ointeraction between products and time, although the highest means were registered 24 hours after the first immersion for all tested groups. 18 338-40