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[Mercury loading from amalgam fillings].

J Wirz1, D Ivanović, F Schmidli

  • 1Abteilung für Zahnärztliche Technologie, Universität Basel.

Schweizer Monatsschrift Fur Zahnmedizin = Revue Mensuelle Suisse D'Odonto-Stomatologie = Rivista Mensile Svizzera Di Odontologia E Stomatologia
|January 1, 1990
PubMed
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Dental amalgam fillings are safe for patients, with no significant mercury level differences found in those with or without fillings. Dental staff showed higher mercury levels but remained below poisoning thresholds.

Area of Science:

  • Dentistry
  • Toxicology
  • Environmental Health

Background:

  • Dental amalgam, a common filling material, faces public criticism due to mercury concerns.
  • Patient desire for tooth-colored fillings and media-driven fear of mercury fuel the controversy.

Purpose of the Study:

  • To investigate the risk associated with dental amalgam fillings.
  • To quantify mercury levels in individuals exposed to amalgam and in control groups.

Main Methods:

  • Flameless atom absorption spectroscopy was used to analyze mercury content in blood and urine samples.
  • Four test groups were studied: dentists/assistants, individuals with amalgam fillings, and two control groups.

Main Results:

  • Dental staff processing amalgam showed double the blood mercury levels and significantly higher urine mercury levels compared to controls.

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  • No significant difference in mercury levels was observed between control groups with and without amalgam fillings.
  • All tested groups remained below mercury poisoning threat levels.

    • Conclusions:

    • Dental amalgam fillings pose no risk to patients.
    • Slight mercury traces in the general population likely originate from diet and environment.
    • Protective measures are recommended for dental office staff to minimize occupational mercury exposure.