Helps cavities before they start. ADA Accepted. American Dental Association. The ADA Council on Scientific Affairs' Acceptance of Crest Cavity Protection Cool Mint Gel is based on its finding that the product is effective in helping to prevent and reduce tooth decay, when used as directed. Fights cavities on teeth and exposed roots, a highly vulnerable part of your permanent teeth as you age. Fights cavities with clinically proven Fluoristat. Fluoristat is a trademark for a proven decay-preventive composition (active ingredient sodium fluoride).