I had the same problem with my teeth from using toothpaste. I quit brushing with toothpaste. I now use bar soap. I read about this in Dr. Gerard F. Judd's book "GOOD TEETH FROM BIRTH TO DEATH." He has a Web page where you can read about it (http://gerardjudd.com/goodteeth.htm). You might have brushed the enamel away from your teeth, which will cause sensitivity. I have read about people restoring teeth. I think you need to clean up your blood for this to happen, which will likely involve a change in diet, getting rid of parasites, and detoxifying. Checkout the "Ask Barefoot Herbalist" forum on this Website. He has a lot to say about cleaning up your blood. Also, Barefoot sells Tooth & Gum Restore Powder.