For lasting core buildups, block-outs and repair, Miracle Mix offers the formula of glass ionomer cement with 100% fine silver alloy powder. Strong direct bond that will not chip when brimmed or cut. Simple technique that only takes 4 minutes set to finish. High fluoride release that reduces secondary decay. Won’t stain or discolor surrounding teeth. Easily distinguishable from tooth structure. Shrinks and expands like tooth structure.