If your still grinding your teeth a lot look into increasing your Magnesium intake (either through food or supliments). It completely eliminated my nightly grinding
I don't know how it would stop the grinding, but it, sure enough, sounds like it would help with the tension headaches I get when my neck muscles tense up/cramp up from all the grinding.
Thank you very much for suggesting this, if this actually stops the grinding too then you've just given me some serious increase in quality of life!