I believe that amalgam is defective by design - it has more than trace amounts of mercury in it. We are already getting a large dose of heavy metals by living here in UZ, and the US is steadily moving in that direction, so R is switching his fillings to ceramic while it's cheap.

Amalgam is the old and cheap way of doing things. I have all ceramic fillings and as far as i can tell they are the best thing to put in your teeth.