Thank you for the reply. I'm really upset because I had the dentist use this instead of mercury fillings in my daughters teeth. They could not put in porcelain because they were not prepared to use it or something to that effect. So I told them I definitely did not want mercury in her mouth and they told me the only other thing they could use was the resin. I thought it would be alright to use but I guess I was wrong. It is very hard to find a dentist who does not use mercury fillings. I'm going to do that search you mentioned on bisphenol-a and see what I find. Thanks again.