Teeth hypersensitivity is a condition characterized by sharp pain associated with
temperature change, evaporative, tactile, or chemical stimuli. It
has been reported that up to 57% of the adults suffer from this condition.
Toothpaste with potassium nitrate or potassium citrate are used for this problem. The most common potassium salt used in sensitivity toothpaste is potassium nitrate (KNO3).
Other componds in toothpaste to reduce hypersensitivity are arginine with calcium carbonate, strontium acetate, calcium sodium phosphosilicate, and stannous fluoride .