i think it's a bad idea. but they've been using it
since 1880.

silver-mercury amalgam is nice and soft and squishey
and easy to work with, and the dentists are too lazy
to use modern ceramic fillings.

combine that with all of the lead we spewed into the
environment for 60 years (leaded gasoline),
and,... people wonder why everyone is either
crazy or borderline crazy?