Fluoride release profile of a nanofilled resin-modified glass ionomer cement

Abstract

The present study aimed to compare the fluoride (F -) release pattern of a nanofilled resin-modified glass ionomer cement (GIC) (Ketac N100 - KN) with available GICs used in dental practice (resin-modified GIC - Vitremer - V; conventional GIC - Ketac Molar - KM) and a nanofilled resin composite (Filtek Supreme - RC). Discs of each material (n=6) were placed into 4 mL of deionized water in sealed polyethylene vials and shaken, for 15 days. F - release (μg F -/cm 2) was measured each day using a fluoride-ion specific electrode. Cumulative F - release means were statistically analyzed by linear regression analysis. In order to analyze the differences among materials and the influence of time in the daily F - release, 2-way ANOVA test was performed (α=0.05). The linear fits between the cumulative F - release profiles of RC and KM and time were weak. KN and V presented a strong relationship between cumulative F - release and time. There were significant differences between the daily F - release overtime up to the third day only for GICs materials. The daily F - release means for RC were similar overtime. The results indicate that the F - release profile of the nanofilled resin-modified GIC is comparable to the resin-modified GIC.