Go figure since the 1800's dentists have been using Amalgam or Silver fillings to fix our cavities which is basically Mercury mixed with silver, by weight it's about 50 percent mercury.  So we have it in our mouths for years, we chew on it, we brush it, we floss it, (I don't want to know what else you do with it) but guess what, all that may release vapors of mercury which has been said that significat amounts can permanently damage the brain and kidneys. Fetuses and children are especially sensitive to its harmful effects.

So now the FDA says the amounts are not significant enough to pose a danger, even though people with Amalgam fillings have showed mercury in their blood and urin samples.

You can read the full article HERE