Wonderful piece here... and if I may: from my limited understanding of dream analysis and form what I learned back in high school psychology, dreams about teeth are dreams pertaining to the way you view your vanity. Teeth are associated with smiling and if you have a lovely smile then you're a lovely person, basically. So dreams involving the distortion of the teeth could (key word) mean a distortion of the way you see yourself and your aesthetics.
Also, FKK that. Mouths creep me out and I'm glad that has been kept out of my list of recurring nightmare themes...mine are usually black dogs trying to kill me, some with upside down heads x.x
I have the dreams where your teeth push out really easily and you feel that sick smashing of it against your gums before it falls out, and I panic every time. I looked it up and I guess it means I have low confidence in my physical appearance? I don't know HOW it means that, but eh.