I recently had a root canal and had an old filling replaced with a new one, both are next to each other. Everything went well and I had no lasting pain. I went in this week to get the permanent crown put on my root canal tooth, and now I have been in pain ever since. The dentist flossed around the crown and between the tooth with the new filling and I instantly felt pain. The pain goes all the way down to the jaw. I told the dentist and he said it should go away in a few days. I do not understand how it felt fine before, and now it is in pain. I would appreciate any help because now I am fearful of going back. thanks