Thought I'd add my two cents worth, since I had several months of very bad pain on my AN side recently. After seeing several doctors and my dentist (who ruled out any cavities), everyone finally agreed that it must be TMJ. I started having the pain within a month or so of my translab surgery and it just kept escalating. It felt like a bad tooth and caused my whole jaw and neck to hurt. I finally got fitted for a lower night guard (I had worn an upper for years for bruxism, teeth clenching) but it was no longer doing any good. The lower guard has been a little weird to get used to, but it is working really well and almost ALL of the pain is totally gone.
My dentist and ENT believe that the facial paralysis triggered severe TMJD in my case. Not being able to chew on that side, nor being able to move my face in a normal way for months caused my whole jaw to get out of alignment. The only downside of the night guard is that I can't close my jaw and since I am having some muscle spasms in my cheek and lip now, I can't close the AN side of my mouth at night so it gets very dry. I slather on lip salve at night and keep water next to the bed, but I still wake up with dry lips and mouth. No pain, though, and that's a blessing!
By the way, if you have facial paralysis, it is good to try to chew on that side, but VERY bad to chew gum as that can cause synkinesis!
Acoustic Neuroma - the gift that keeps on giving...
Debbi