Verified answer

When I had that my dentist told me to start using a toothpaste called Sensodyne or something, and I've been fine since.

Actually the person who said sensodyne is correct. It contains high flouride content that helps with sensitivity it really does work after you use it a while. If it does not then you need a special kind from the dentist.

There are a lot of sensitive teeth tooth pastes out there, use them.

Also the dentists have a cream that can help,