SDI's stae is a fluoride releasing single component dentin/enamel adhesive system, designed for composite, compomer and porcelain bonding. Stae contains a radical resin system that dramatically decreases polymerization shrinkage and microleakage, and completely and homogeneously infiltrates the hybrid layer to ensure superior bonding to the tooth. Stae's one bottle combines both primer and adhesive in one to simplify technique and decrease patient chair time. In an aqueous environment, the fluoride ions in stae diffuse from the resin into the surrounding tooth. This ionic movement is caused by oral fluid passing in and out of the resin and tooth, acting as a carrier for the fluoride ions.