Mercury causes tooth grinding and from what I have read and experienced it is because of the fact that it blocks magnesium (a very important mineral). Without enough magnesium, your muscles can't relax but are in a constant state of contraction. TMJ and bruxism are simply mg deficiency symptoms. My dentist wanted to have me sleep with a night guard and I had TMJ and muscle tension headaches everyday until I discovered magnesium and they all went away (only return some when I get low levels again) even though I still had my 11 amalgams in at the time.

I read an article that said that