I wasn't sure where to add this comment, but my son developed tics after getting 2 teeth filled. Turns out, they were BPA fillings! I'm having them removed to see if that removes the tics. He also has dark circles under his eyes which always tells me he is having an allergic reaction to something. His diet is strict and our naturopath believes it is the fillings because of the timing. He did also get NO2 (which I didn't realize was bad) and we are now supplementing with lots of vitamins. I'll post again to let you know if we see changes after fillings come out.