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Mercury Uptake and Kinetics after Ingestion of Dental AmalgamDept. of Basic Oral Sciences, School of Dentistry, Karolinska Institutet, PO Box 4064, S-141 04 Huddinge, Swedengunilla.sandborgh{at}ofa.ki.se
Dept. of Basic Oral Sciences, School of Dentistry, Karolinska Institutet, PO Box 4064, S-141 04 Huddinge, Sweden,
Toxicology and Risk Assessment, National Institute for Working Life, Stockholm, Sweden
Dept. of Basic Oral Sciences, School of Dentistry, Karolinska Institutet, PO Box 4064, S-141 04 Huddinge, Sweden The aim of the present study was to investigate the G-I uptake of mercury (Hg) after intake of a single dose of amalgam-Hg, followed by pharmacokinetic analysis of the data. Eleven volunteers without amalgam fillings ingested 1.00 g amalgam powder. Hg in plasma vs. time was analyzed with a two-compartment model by means of mixed-effects modeling. A fraction of the absorption rate of Hg to the central compartment was inversely proportional to the plasma ferritin levels. The population mean half-life of the terminal phase of Hg in plasma was 37 days, with a considerable standard deviation in the population. The absorbed fraction of the administered dose was estimated to be about 0.04%. It is concluded that the G-I uptake of Hg is of quantitative importance during dental treatment.
Key Words: plasma absorption human oral administration pharmacokinetics
Journal of Dental Research, Vol. 80, No. 9,
1793-1796 (2001) |
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