Tips Refill, C2, 0.25g x 20 Tips fluoride releasing, highly aesthetic dental material for all classes of restorations..Eight-year University of Florida clinical study published in JADA showed no secondary caries, no failures, no post-operative sensitivity and high retention of color match and luster,.S-PRG (Surface Pre-reacted Glass Ionomer) technology ability to recharge fluoride,.Appropriate for patients with a high caries index,.Excellent fluorescence and light diversifying aesthetics,.Eliminates shade variations associated with polymerization,.High level of radiopacity,.Enamel-like surface hardness.