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. Products containing stannous fluoride may produce surface staining of the teeth. Adequate toothbrushing may prevent these stains which are not harmful or permanent and may be removed by your dentist. This Crest is specially formulated to help prevent staining. Smooth formula. Healthier gums and stronger teeth.