The pain exists after 3 years. When I went back in for a follow-up just 4 months after the root canal the nurse said I shouldn't come back to them. She said the root was removed and you need to stay with your dentist. The dentist said I should go back to kennedy. When I called again kennedy's receptionist Laurie said I would need to pay $140 for a new exam and that I should be going to my dentist not kennedy.