A short term comparitive analysis of Fluoride release from a newly introduced Glass Ionomer Cement in deionised water and lactic

Background and objectives:The ability of Glass ionomers to release fluoride exerts an anticariogenic effect, thereby reducing the possibility of recurrent caries and promoting remineralization. The purpose of the study was to evaluate and compare the amount and pattern of fluoride release from three types of glass ionomer cements GC Fuji II, GC Fuji VII and GC Fuji IX in water (pH 7) and lactic acid (pH 5.2) for a period of 28 days at five intervals.Methods: Twenty cylindrical specimens of dimensions 5 mm diameter x 2 mm height were prepared from each restorative material (total of sixty specimens). The pH values of the individual storage solutions were determined. pH of lactic acid was adjusted to 5.2 and pH of deionised water was 7.0. Specimens were divided into six groups and were stored in the incubator at 37 0 C. Common immersion regimes were followed for all six groups of restorative materials for evaluating the release of fluoride ions at two different P H . Fluoride release was assessed for a period of 28 days at five intervals at the first, eight, fourteenth, twenty -first and twenty-eighth days. Fluoride ion concentration of these solutions was determined using a Fluoride ion Specific Electrode. Results: Data obtained was