Hello all, I am a 26 year old male that has always had a huge fear of the dentist. Well recently the cavities on all four of my back molars and my wisdom teeth pain was finally enough to push me over the edge. I had my wisdom teeth removed as I was told I needed to in order to have any work done on the back molars. Now 2 of them are very "small" cavities that should be an easy fix, the 3rd is ugly looking but still needs just a crown. The 4th and last though is absolutely terrible looking. I have had this cavity for years so you can imagine its condition. The entire back portion of the tooth and fractured off leaving that nasty black/brown/grayish decay. My dentist has assured me that they can all be saved and no root canals are needed. I asked about extracting at least the 4th since it looked so bad and I just wanted it gone and was told that was a bad idea and completely un needed. I am missing the entire back half of the tooth, leaving only the decay left on the portion. Is this truly still salvageable? I just done want to have the crown done to have to go back later for a root canal or extraction. The tooth is sensitive to cold/hot, but in the X-rays my dentist has showed me it is not yet to the nerve. Has anyone had experience with having a tooth this far gone and crowning it? With the amount of the tooth gone would you recommend extraction? Thanks