Razagui IB, Haswell SJ. Mercury and selenium concentrations in maternal and neonatal scalp hair. Biological Trace Element Research. 2001 Jul 1;81(1):1-9.
The data from this preliminary study suggest that amalgam-based dental treatment during pregnancy is associated with higher prenatal exposure to mercury, particularly in cases of amalgam removal and replacement. The ability of a peripheral biological tissue, such as hair, to elicit such marked differences in neonatal mercury concentrations provides supporting evidence of high fetal susceptibility to this form of mercury exposure.