<s>[INST] My 53 year old son has 7 gold capped teeth.  I had several murcury fillings in the past , of which I experienced a unpleasant time each time when Iwpould be using a silver-plated fork or spoon into my mouth.  My son has developed an incurable disease, Scleroderma.  A autoimmune problem.  There is little known about  Scleroderma.  I know I am clutching at straws.  With that much gold in his mouth causes me to wonder. I know that gold does react differently than the old  murcury, but I am wondering if  all that gold is causing some sort of reaction to his immune system. [/INST] Hellooo...read through your query...gold is the noblest metal and is also doesn't react with the body tissues(biocompatible).it is not used these days BCO it's an era of aesthetics and everyone prefer tooth color filling rather than metal fillings(anesthetic).so nothing to worry about his fillings...immunity is not hampered by gold...so think much about that...hope your benefitted something by this reply.have a healthy day!!! </s>