You have every right to be angry! I would be too, and am from your post. There is no way EVER I would let a dentist put mercury in my kid's mouth (if I had one). It makes me sick what they are doing to people. So many dentists here are leaving the NHS and I am sure amalgam is part of the reason. If you're poor, you get amalgam, if you can pay, you get something better. Amalgams took my later childhood, I am sure of it, because I totally believe they gave me OCD.