QUOTE (Ghost It Notes @ Nov 4 2007, 08:40 PM)

The cost of replacing all of your amalgam fillings with composite would be stiff. Also, you would lose more tooth structure as the dentist would have to drill out more space to clean out the old filling. It would be fine if you only had one or two teeth involved. But I'm not entirely sure the percentage of mercury would harm you.It is only 1 or 2 percent in the filling. Here is some more info on that;
Mercury, which is poisonous, is used in dental amalgam. Is amalgam filling safe?
Amalgam contains various metals such as silver, copper and tin, as well as mercury. When mercury is combined with these metals, it becomes an inactive stable substance. Only under unusually great pressure or abrasion will the amalgam release a minute amount of mercury vapour. As compared to the daily dosage of mercury being absorbed from the environment, such as food, water and air, the minuscule amount of mercury released from the amalgam fillings is insignificant.
Should people have the amalgam fillings in their mouths removed in order to prevent certain serious illnesses such as Alzheimer's disease?
There is no scientific literature or evidence which shows that the removal of amalgam fillings helps patients recover from their illnesses, nor is there any evidence which suggests such a relationship. Unless there is an allergic reaction, it is not advisable to have amalgam fillings replaced because of the following reasons:
Replacement of filling materials will lead to further loss of tooth structure.
Amalgam is still the most preferred filling material owing to its safety and effectiveness. Tooth-coloured filling material such as composite is not as resistant to stress as amalgam and is not suitable for large cavities. Gold is an effective material, but it is expensive.
Are some people allergic to amalgam?
Allergic reaction to amalgam is very rare. Within 150 years of usage, there were only 100 documented cases. This type of patients should use other filling materials.
I meant for all the new fillings, like stop doing the metal fillings from now on and just go with the composites. As to allergies I am allergic to most metals and have one metal filling since I couldn't afford a composite in that one.