well..a few thoughts..the ADA says mercury doesn't leak out much, not enough to hurt anyone. in lakes, there would be an accumulative effect, and the mercury would not be secured and amalgamized in the human. i do recommend, however, that humans with mercury fillings do not go swimming in lakes and keep their mouths open, just to be on the safe side of protecting our environment. on a serious note, i believe the ADA and FDA (and congress) is hoping that all people have their mercury fillings replaced (at their own expense, of course) so that no one will have anything to complain about. in fact, i bet they love seeing more and more dentists become mercury-free. after all, the government has so many other special interest groups they support, the mercury industry is dispensable.

Torrie