Aids in the prevention of cavities. Helps prevent gingivitis. Helps interfere with the harmful effects of plaque associated with gingivitis. Helps control plaque bacteria that contribute to the development of gingivitis. Builds increasing protection against painful sensitivity of the teeth to cold, heat, acids, sweets or contact. Crest Pro-Health a Polyfluorite System consisting of antibacterial fluoride and ActivClean Crystals. Whitens teeth by removing surface stains and inhibiting tartar buildup. Freshens breath.