I had dental work done during pregnancy and my daughter is now hypothyroid, and probably has been since birth. It is only since I developed chronic fatigue (mercury toxicity) myself and researched it that I worked out that she was actually hypothyroid - before I just thought she was chubbier than my other children, more emotionally labile, with abnormally dry skin. She also has candida. Children may appear to be normal and OK, but if you know what you're looking for you'll find mercury symptoms. I am not proud of what I have passed on to my children - my son is also affected. The dentists are poisoning us for generations to come.