In the mid 90's the Food and Drug Administration allowed the oral pharmaceutical industry to combine two active ingredients in a single toothpaste. Sensitivity toothpaste is best used on a cotton swab held up on a dry tooth for 1 - 2 minutes. It can take 4 - 6 weeks for any effects to be noticed and the procedure must be continued for the patient's lifetime. These have the potential to dull the tooth surface and must be used on a limited basis. These toothpastes should not be considered a substitute for professional dental cleanings and polishings.
Smoking cessation is the best method for preventing stain as well as for preserving overall health.
In addition, the actual form of the ingredients does not produce the expected result. Baking soda does freshen both the breath and the refrigerator. Some products contain alcohol and should NOT be used by children or recovering alcoholics. The most common ingredient is pyrophosphate. Tartar control toothpaste is not a substitute for professional dental cleanings.