Hi. I had a root canal done back in Feb. The dentist missed a canal and it had to be redone. I had an endo redo it. It still hurts badly. the surrounding teeth are fine. I went to the doctor and he said that it could be something of a nerve problem since I cant get in to the see the dentist. He gave me the name and told me to google it but i forgot the term i think it was "neur" or something like that since I have had pain shocks all over the mouth. It goes from top to bottom and front to back and yet the dentists and endo dont think its the teeth. Could the previous dentist who left a file in my canal and didnt clean the orignal root canal properly caused this? Im so sick of dentists and even sicker of paying their bills. The endo said the orignal dentist stuffed up and wrote a report on it. But I saw the doctor and said it might be a facial nerve problem. Any clue?