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Exposure to Mercury Due to Inhalation
Based on available science, normal ambient air concentrations of mercury vapour, averaging 1.6 nanograms per cubic meter of air, do not appear to be a cause for concern (1 nanogram = one billionth of a gram). However, inhalation can be a significant route of exposure when mercur y-silver amalgam is used in dental fillings, particularly for individuals that are hypersensitive to mercury. Health Canada advises that mercury fillings should not be placed in the teeth of pregnant women or people with impaired kidneys, and wherever possible, non-mercury fillings should be used for children.
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