I had posted a while back my oro antral communication healed. About a month later I began having pressure on that side of the roof of my mouth - a lot of pressure. It throbs and sometimes will go on all day. Then it gets better, and I may feel nothing. Also, my tongue feels scalded. I have been back to the oral surgeon and he is having some issues diagnosing this and has been working with my general dentist. I do clench my teeth in my sleep (I have a mouth guard), wondering if this has anything to do with it. Has anyone heard of this and have any experience.