Anbesol (I think that's how you spell it). It's the same stuff you put on kids gums when they are teething. The only problem with it is that the longer you use it the more you have to apply it. I had a nerve die several years ago in one of my front teeth. I bought this stuff and it worked great. I put it on and had no pain for about an hour. Then I reapplied it and had no pain for 45 minutes. You get the picture. Eventually I was putting the stuff on about every five minutes. Make an emergency dentist appointment as soon as you buy the stuff.