Hi, thankyou for your reply. I have been checked for sinus infection over the past few years and have been cleared. I did have a few bouts of sinusitis after the sinus surgery and occasionally the facial pain does spread across my face and into the sinus area. I did wonder at one point about it being a sinus leak also and both ENTs I saw could not find any evidence of that. Over the past year or so, there has been a lessening of any sinus pain. However, I do believe it is all connected and setting each other off - sinus, tooth, facial nerve