fillings

On the questionnaire from Dr. David Russell in Denmark, he asked me some very interesting and deep questions.  One of which is:  Do you now have, or have you ever had (date removed) amalgam/’silver’/’mercury’ fillings in your teeth?  Actually, the answer is Yes, I do.  I have 2 fillings from 1996 that are amalgam.  If this substance could be leeching into my system causing problems, then it seems easy enough to facilitate a safe removal.  I'm on a cancelation list for next week with my dentist and I expressed this importance, which she completely understood.  Why is this not a thought in mainstream medicine in the USA?

http://en.wikipedia.org/wiki/Dental_amalgam_controversy