Pain after permanent crown in root canal tooth...normal?

Root canal is usually painfull. When people are told that they need a root canal treatment, they usually think about pain. However, the pain they feel is caused by an infection in the tooth, not by root canal treatment. A root canal is done to eliminate that pain. The root canal procedure itself is painless. A local anesthetic numbs the tooth and the surrounding area. Many people may be afraid to have a root canal because they are anxious about having dental work done. Dentists can provide calming medicines, such as nitrous oxide. You migh have a contact to your crown that lead the pain by biting. I recommended go back to your dentist and ask him about your problem.

Based on your symptoms, it seems like there is premature contact on the permanent crown leading to pain on biting/pressure. I would recommend that you go back to your dentist as soon as possible for an occlusal/bite adjustment.