A few months ago I went to dentist with pain. He exrayed and said a different tooth from area I said was the cause and it needed a root canal. Which he did. He treated the area I said was hurting with fluoride (I think it was) to help with sensitivity. A couple months later I started feeling pain again occationally. I ignored it. Now after several months the pain is worse. I went in and he says sometime since my last visit I cracked my tooth the crack doesn't show in xray, but he can feel it. (rare he says in a tooth that hasn't a cavity nor a filling) and the nerve is bad. This tooth now needs a root canal, which he says may or may not be successful. I am asking for a second opinion. I truly like this dentist, but it is a big expense to incur so soon after saying I had pain in that very place. What do you think? Thanks!