Hi my thoughts on this are, the tooth is living tissue with a nerve inside. Any chelator travels into the nervous system, organs, etc etc could pull mercury where it goes depends on being fat/water suluable. If you have amalgams in it then makes sense that a chelator could pull mercury from those fillings. e.g, even things like copper bands, garlic, what ever you rub into the skin will get absorbed. Why could a chelator not draw some mercury from the amalgams in teeth.

Phil