* The powder is fine and smooth, with high compressive strength and low solubility. It is not irritating and stable in mouth environment, with good edge sealing effect. It has similar thermal expansion coefficient with teeth. Containing active components of fluoride and strontium ions, it can emit fluoride ions constantly and so has anti-cavity function. The product has 1-3 colors and matches with natural teeth. It is a reliable dental cement product for patients.