Remember how followers of the mercury militia were getting all their old mercury amalgam fillings pulled? It turns out that maybe that’s not the greatest idea.
A group from the U of I found that once you dig out the fillings, under the right conditions, mercury can become exposed to certain bacteria that methylate it, forming toxic methylmercury compounds.
If this pans out, it may change the way mercury fillings are removed and the waste products disposed of.
University of Illinois at Chicago (2008, March 27). Dental Chair A Possible Source Of Neurotoxic Mercury Waste. ScienceDaily.