The Sensodyne Toothpaste for sensitive teeth is the best toothpaste I have used. Our household uses the Repair and Protect version which is supposed to help rebuild tooth enamel. It uses stannous fluoride to build a protective layer over the sensitive areas of your teeth. I have gums that are slowly receding as I age, and this toothpaste helps tremendously with the pain I experience due to the receding gum line. Prior to using this toothpaste I would experience sharp pain whenever I would drink something cold or very hot and every time I would eat ice cream. Now that I am using the Sensodyne toothpaste I do not experience the same pain when eating or drinking hot or cold food or drinks. I noticed a difference within a couple of days of using the Sensodyne. The one time I ran out of Sensodyne and had to use another brand, within two days I was experiencing tooth pain again. Sensodyne also aids in the prevention of cavities and my mouth feels clean and fresh after brushing. The cost is not too much more than regular brands of toothpaste and being able to now eat and drink what I wish is well worth the extra cost.