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Occupational exposure to mercury. What is a safe level?
R Moienafshari1, B Bar-Oz, G Koren
1University of Toronto.
Canadian Family Physician Medecin De Famille Canadien
|July 13, 2000
Summary
Pregnant dental hygienists exposed to mercury should monitor exposure levels. Mercury vapor concentrations above 0.01 mg/m3 are unsafe for pregnant women and fetuses. Testing blood and urine confirms exposure.
Area of Science:
- Occupational health
- Environmental toxicology
- Reproductive health
Background:
- Dental hygienists may encounter mercury in the workplace.
- Occupational mercury exposure during pregnancy poses potential risks to fetal development.
- Patient concern regarding mercury's impact on pregnancy necessitates clear guidance.
Purpose of the Study:
- To address concerns about occupational mercury exposure in pregnant dental hygienists.
- To define safe mercury vapor levels in the workplace for pregnant women.
- To recommend appropriate actions for managing mercury exposure during pregnancy.
Main Methods:
- Assessment of patient's occupational exposure to mercury.
- Review of current guidelines on safe mercury vapor concentrations.
- Consideration of diagnostic testing for mercury exposure.
Main Results:
- Mercury vapor concentrations exceeding 0.01 mg/m3 are considered unsafe for pregnant women.
- Blood and urine mercury level testing can confirm occupational exposure.
- Mercury salts in the workplace should be avoided by women of childbearing age.
Conclusions:
- Occupational mercury exposure requires careful management during pregnancy.
- Monitoring environmental mercury levels and biological markers is crucial.
- Preventive measures, including avoiding mercury salts, are recommended for pregnant workers.