intense unilateral pain in upper jaw (right side). The pain occurs randomly radiates across the right side of face and when the pain subsides it is followed by throbbing sensation and teeth and gums feel tender. The initial pain and other symptoms localised to the incisors, canine and pre-molar. The pain isn't constant and happens intermittently. Last time I had this pain it was about a month ago and 3 months before that. I went to the dentist and they couldn't see a problem. Pain killer do not shift the pain. What is wrong?