Objectives: The aim of this study was to analize the influence that dental alloys: amalgam Artalloy (Degussa), silver-palladium Experimental (UNAM), silver-tin Zeycocast (Zeyco), nickel-chromium Ion Crown (3M) and copper-aluminum Liga Dorada (Etalloy) have on the fluoride release concentration from two glass ionomer cements: one conventional type II (Degussa) and another with resin modified (Vitremer,3M). Methods: Specimens from both glass ionomer cements and dental alloys, were made according to the manufacturer's indications, wich were stored by couples (glass ionomer cement/ alloy) in deionized water at 37 ±1 °C; control groups were without alloy. Determinations of fluoride released from glass ionomer cements were made in a period among 24 hours and 85 days, using an ion analizer (Orion) and fluoride selective electrode (Orion). Results: The results were analyzed using Kruskal-Wallis test in which the conventional glass ionomer cement showed statistically significant differences (H=13.333; P=0.020) in groups corresponding to dental amalgam and silver-tin alloy, because the amount of fluoride released was higher than the other groups including control group. Resin modified glass ionomer showed no statistically significant differences in the amount of fluoride release; furthermore, during the present study resin modified glass ionomer released significantly less fluoride than conventional glass ionomer.Conclusions: The presence of dental alloys increased the fluoride release from conventional glass ionomer. The resin modified glass ionomer did not affected by the alloys.

Back to the Dental Materials: III - Ceramics and Cements Program
Back to the IADR/AADR/CADR 82nd General Session (March 10-13, 2004)

Top Level Search