If it does not feel right it may be that there is an inflammation going on down there in your jaw bone. Roots cannot really be filled up properly 8which every dentist will deny), because there are so many extremely fine channels, that often little parts are not filled. Sometimes the filling "overflows" and can cause irritation in the bone. It should not be giving you trouble, that is a sign something is not right. Have an x-ray done, sometimes one can see if an inflammation or other not so nice things are going on.