Its really great to get your perspective Moose!!
Temple Grandin is who you are referring to. She used a cattle press to get over her sensory disorders.
I am a total mouth sensory person. Pens and pencils never survive being around me. I always chew them up. I really wonder if Aaron does, in fact have a sensory issue that its helping him deal with.
When he started school last year, they gave him this little rubbery letter Q to chew on.
I tell you-- I bit down on it really hard and I felt it in my sinuses when I released my bite-- and it felt REALLY good to do it.
So, you're probably right about the teeth grinding.
Thanks for the input!!