I went to a dentist who said I needed to replace a crown that wasn't giving me any problems. I did at her suggestion. Before the new crown was put on, she cleaned out the area and she dug so deep that even with the novacaine I could feel some pain. After she replaced the crown, I started to get pain in the crown as well as a headache. She recommended 800 mgm of Ibuprofen 3 times a day to calm the nerve. That didn't work. The pain in the tooth went away but I'm stuck with the headaches am and pm so end up taking Ibuprofen. She now claims I need a root canal. I no longer go to her, went to another dentist who xrayed and said the nerve looks fine. Still the headaches. Should I have the root canal done anyway on a good tooth?