Cause of tooth sensitivity is:
tooth caries (cavities)
gum disease gingivitis & periodontitis- root is exposed
tooth attrition, erosion, abrasion-tooth grinding, loss of tooth structure.
fractured teeth
compromised tooth fillings or broken filling
exposed tooth root etc.
Toothpaste can give you temporary relief. But to get permanent relief & to protect the tooth solve the cause of sensitivity. don't neglect this problem. Don't take treatment on your own, take advice from a good dentist. If you take the correct treatment at the correct time then easily you can protect your tooth, if you getting tooth sensitivity immediately take specialist advice. So to get permanent relief & do the proper treatment, know the cause of sensitivity, treat the disease & automatically you will get relief from symptoms of tooth sensitivity.