(a form of inorganic
mercury) in the mouth, especially during chewing.
As a result, mercury crosses the placenta
through blood circulation. This fact has concerned
the scientific community as to whether or not amalgam
fillings should be used in vulnerable populations,
such as pregnant women. Using a rubber dam
and high-speed evacuation (suction) during amalgam
placement or removal may significantly
reduce the inhalation of mercury elements (mercury
vapour)