I am a dentist who recommends Sensodyne toothpaste for my patients with sensitive teeth. I give it 5-stars because it has a proven track-record of many years of effectiveness. The active ingredient in any toothpaste that is advertized as a "desensitizing toothpaste" is potassium nitrate. Potassium nitrate works by plugging the micro dentinal tubules that communicate directly with the pulp (nerve center) of the tooth. Most people have sensitive teeth because of gum recession exposing the root surface, (or thinning enamel) thus exposing the dentinal tubules. If the tubules are touched, exposed to sugar, or cold, fluid moves in the tubule and this is perceived as pain. With repeated exposure, potassium nitrate effectively plugs up the dentinal tubules to lessen or completely eliminate sensitivity.
This toothpaste will not work on teeth with cavities, or teeth with abscesses - it only works on teeth with exposed dentinal tubules.
It is also important to realize that Sensodyne does not work immediately. It takes up to 2-4 weeks of continuous daily exposure for the product to work.
Sensodyne can be used as a "stand-alone" toothpaste, since it has fluoride in it, or it can be used just for sensitive areas.
Finally, the effect of the potassium nitrate will wear off over time, so it is likely one will need to repeat the treatment as sensitivity returns.
This is a great product for those with sensitive teeth.
Sensodyne Toothpaste for Sensitive Teeth and Cavity Prevention, Maximum Strength, Fresh Mint, 4-Ounce Tubes (Pack of 4)
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