I have a concern now,I read the dental assistants have a 3 times chance of having a miscarriage then other women,I guess cause the vapors frome the fillings which I think are 50% mercury.My worries now are I miscarryed at 10 weeks and 4 months before I got pregnant I had 7 fillings put in 5 new and 2 replacing old ones from when I was a kid.I thought I was doing the right thing fixing cavities but now I am worried when I go to try to get prego again (soon) that something else or the same will happen.