Hello-I went to a dentist in 1987, I had an amalgam filling put in -I did NOT know about amalgam then the dentist s assistant was the one that mixed the filling material together, which I felt was wrong and I REALLY believe she didn t know what she was doing. I then had this disgusting metallic taste in my mouth for many days-I had amalgam before and never experienced that s then I got this VERY,VERY severe pain in my head, lost vision in one eye. Back then MRI s were just coming out and the Dr. only sent me for a Cats can w/contrast and everything came out normal. Well, at the age 22 I was diagnosed with MS.I had all my fillings taken out ten yrs. later and that Dr. said it was the amalgam.