"The American Dental Association still says it is safe to use mercury or silver fillings. That's something I've always wondered about, since the Environmental Protection Agency (EPA) considers old mercury fillings that have been removed from the body toxic waste that has to be disposed as such."
And here's the punch line:
"Let me put this another way. It's apparently all right to put mercury fillings in your mouth -- but not to throw them out in the garbage!"