[Mercury concentration in blood and urine--before and after the placement of dental amalgam fillings].
70 patients of dentist's surgery were given MOD amalgam fillings (non-gamma-2 amalgam) for molars. They were allocated for comparison to four groups defined by their treatment, i.e. the number of old and new restorations and whether a rubber dam was used. Blood and urine samples were collected at regular intervals before and during a 14-day period after treatment and tested for mercury concentration (Hg). Over the observation period the groups with the highest exposure (1-2 old restorations replaced by new ones) showed a tendency, in contrast to the less exposed groups (1 new filling with or without dam), towards increases (p less than 0.10) in group average Hg values of approx. 0.2 microgram/L (blood) and 0.3 microgram/g creatinine (urine) as acute treatment effects. The highest values recorded before and after the treatment, 3.3 micrograms/L (blood) and 16.5 micrograms/L (urine) are higher than normal but do not indicate any increase in the risk to health especially if they are not persistent.
Babisch
W
W
Institut für Wasser-, Boden- und Lufthygiene des Bundesgesundheitsamtes, Berlin.
Kovacic
S
S
Krause
C
C
Roulet
J F
JF
Thron
J L
JL
Hoffmann
M
M
D003404:Creatinine / Q000652:urine; D003723:Dental Amalgam; D003793:Dental Restoration, Permanent; D005260:Female; D006801:Humans; D008297:Male; D008628:Mercury / Q000097:blood* / Q000652:urine; D012307:Risk Factors
D003723:Dental Amalgam; D003404:Creatinine; D008628:Mercury