Not being able to move your face would be scary for sure. That is interesting that a tooth causes that but if you had enough damage to a root, I can see that. It's happening again? I'd check for the same thing, then. Have you gotten on top of your dental health at all? Is it numb in the same area? If you had a tooth extraction, that means you had a root canal. You may have some residual issues after that. I had a root canal after a long term issue and even though it's been almost a year, if I press in the area above where this took place, I get tingling stretching up into my face and sinuses. Lovely, right? sigh. But that's what a bad toot infection can do and it can take a long time to heal. Go see your dentist and ask about this. If they have nothing for you, go to your doctor. Bells palsy is a reason that people have an issue moving their face but since you've had these teeth issues, that is likely still involved. Let me know what happens, okay?