What can I do about "night grinding"?

When I get stressed out, I tend to grind my teeth a lot, especially at night when I'm sleeping. I'll wake up with headaches, my jaw hurts, and eventually this will cause dental problems (if it hasn't already - I don't know). Unfortunately, I also have minor sensory integration issues - it would be really painful for me to wear any kind of device in my mouth (I don't know if that would be a suggestion, but that would be my first thought). Any suggestions?