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[Mercury determination in human amniotic fluid].

P F Lugliè1, A Frulio, G Campus

  • 1Istituto di Clinica Odontoiatrica, Università degli Studi, Sassari. pfluglie@ssmain.uniss.it

Minerva Stomatologica
|October 21, 2000
PubMed
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Silver amalgam dental fillings may expose fetuses to mercury. While the number of fillings showed no link, larger filling surface areas correlated with higher mercury levels in amniotic fluid.

Area of Science:

  • Environmental Health
  • Toxicology
  • Dental Materials Science

Context:

  • Dental amalgam, containing silver (Ag) and mercury (Hg), is widely used.
  • Mercury's potential to cross the placental barrier raises concerns for fetal exposure.
  • Understanding mercury transfer from maternal dental work to the fetus is crucial.

Purpose:

  • To quantify total mercury levels in human amniotic fluid.
  • To investigate the relationship between mercury concentration and dental amalgam characteristics (number and occlusal extension).

Summary:

  • A study analyzed mercury concentrations in amniotic fluid from 56 pregnant women undergoing amniocentesis.
  • Dental assessments identified the number and occlusal extension of amalgam fillings.
  • Mercury levels were measured using atomic absorption spectrophotometry with a FIAS-amalgam technique.

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Impact:

  • Results indicated a statistically significant correlation between the occlusal extension of dental amalgam fillings and mercury concentration in amniotic fluid (p < 0.05).
  • No significant direct relationship was found between the number of fillings and mercury levels.
  • The findings suggest cautious use of silver amalgam during pregnancy due to potential fetal mercury exposure.