No not a picture of one on your arm or wherever of a tooth with silver amalgam in it (he he), but a discoloration of the gum from amalgam particles.

I convinced my mother to getting her fillings replaced and the dentist said she has a couple of these tattoos. I had never heard of this before. I don't know how dangerous they are but she was advised to see a orthodontist to have it biopsied. Does anyone here have them? I sure hope it's not a big problem.