The primary benefit of anti-sensitivity toothpaste is to alleviate the discomfort associated with sensitive teeth. It contains active ingredient potassium nitrate which help block the tubules in the dentin, preventing stimuli (such as hot, cold, or sweet foods and drinks) from reaching the nerves inside the teeth. It also contains fluoride, which helps to strengthen tooth enamel. Stronger enamel can reduce the likelihood of cavities and further erosion, which are common causes of sensitivity.