You think a dentists website contains reliable and objective information about the safety of mercury amalgams?!! GASP!!!
Mercury Amalgams have *never* been proven to be safe. Metallic mercury in fillings vaporises into an inorganic form which is higly toxic and is absorbed into the brain/nervous and endocrine system. No doubt some people are more able to deal with its effects than others.
There's *plenty* of scientific refs on the net about the dangers of mercury in Amalgams (apart from other sources like vaccines)....