MARK3 Medium Grit Prophy Paste, Assorted, 1.23% APF Unit Dose Cup, 200/Box. Designed to maximize stain removal while minimizing the loss of enamel. Plays an effective role in maintaining substantial fluoride level, and reinforces tooth enamel through remineralization. Compare to Topex, Enamel Pro, Nupro. 200 unit dose cups