The research is so across the spectrum. The dentist often says its no big deal, don't worry about the vapors. But if you notice staff, they are all covered up and protecting themselves. sure, they may do it more often, etc. but that just means 9to me) that there is some risk involved.
Any future fillings I get are composite, and I pay the difference. I've had a few amalgam replaced due to additional decay. It's a subtle poison, so I couldn't tell you if I had any effects.
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