The only negative thought I had regarding amalgam removal is this - the dentist 
digs out the amalgam plus a little more of the tooth, thus increasing the size 
of the filling.  The bigger the filling, the weaker the tooth, which can lead 
to capped teeth and another vicious cycle.  

Mine have been replaced and I'm not sure I've noticed a difference.  Mercola 
says that chlorella will remove the heavy metals such as mercury.
http://www.mercola.com/forms/chlorella.htm

Cindy