Licensure approved Acadental ModuPRO ONE Periodontal Maxillary Arch, which contains 16 teeth, and a bottle of SimCalc and tips – enough to add calculus to hundreds of surfaces. We have added the calculus on at least 20 surfaces for your practice. You may then scale the surfaces and add more calculus for further practice. Fits the carrier trays purchased after January 2016. Comes with screwdriver, and box as originally packaged by the manufacturer.