M.B.
Good morning L.!
I'm responding to you with some advice for tooth sensitivity. However, your request didn't specify if it was for you or your children. So...for you, I recommend brushing with Sensodyne brand toothpaste. It has an additive in it that helps to diminish sensitivity. For your children, I recommend Orajel for Children...both items can generally be found at CVS or Duane Read. I hope this helps...Good luck!
-M.