...exposed nerves! help!? For a while now, the broken tooth has been a hole w/ exposed nerves and it's sensitive to hot and cold and of course sugar. But tonight, I was eating and a piece of food went into the hole when I bit down hard and it's been throbbing ever since. Do I have to get the wisdom and the broken tooth pulled or what?? Anbesol or Orajel isn't working eithr!! What else can I do?