Gaps Between Cavity Margin and Class V Restoration Made from Three Types of Glass Ionomer -Effect of Polishing Period, either Immediately after Setting or after 1 Day Immersion in Water-

Abstract

Effect of the polishing period on the between Class V cavity and light-activated glass ionomer (Fuji II LC, GC), light-activated glass ionomer analog (Dyrect, DeTrey/Dentsply) and conventionally-cured glass ionomer restorations (Fuji II, GC) was determined. Restorations were polished either immediately after setting or after 1 day immersion in water. Determination of gaps was made on axially sectioned specimens. The number of gaps for Fuji II LC and Fuji II polished after 1 day immersion in water was significantly smaller than that of those polished immediately after setting (α=0.05). In the case of Dyract, no significant difference was observed between the number of gaps in specimens polished immediately after light-activation and that of those polished after 1 day immersion in water.