Fleck's Zinc Phosphate Cement is a superior cement that is not matched anywhere on the market. Since the advent of zinc phosphate cement, many other types of cement have been introduced. None, however, has demonstrated clinical superior in terms of strength, resistance to dissolution, and overall retention like Fleck's Zinc Phosphate Cement has. And of all zinc phosphate, Fleck's is the leading brand and cement of choice of dentists.