Helps prevent tartar & cavities. Fights cavities plus fights tartar buildup. Special tartar blocker provides effective tartar protection. Fights cavities on teeth and exposed roots, a highly vulnerable part of your permanent teeth as you age. Fight cavities with clinically proven Fluoristat. Once formed, tartar can only be remove by dental cleaning. Crest's tartar protection's special tartar blocker helps stop new tartar build-up before it forms. Contains Fluoristat for effective cavity protection. ADA (American Dental Association) Accepted. www.crest.com. www.pg.com. Questions? 1-800-492-7378. Crest recommends Oral-B Toothbrushes.