I had a crown done in July and all went well and thought it was done properly. All of a sudden I am having a dull intermittent pain in that area. I don't have any sensitivity when I eat hot or cold things and it does not hurt when I eat, brush teeth or bite down. Any suggestions on what this could be? I have a gut feeling its from grinding my teeth at night or my bite is off. On a scale of 1-10 the pain is about a 1.5.