In the study of U.S. military veterans with dental amalgams, mean urinary mercury was 3.1 µg/L. Urine mercury and the number of dental Amalgams were correlated, and on average, the urine mercury increased by approximately 0.1 µg/L for each surface with a dental Amalgam (Kingman et al., 1998).¹
Looks like you are excreting 1.2X more than an American soldier with mercury-amalgam fillings...
The overall mean urinary mercury concentration varied between 0.12 μg Hg/L and 0.31 μg Hg/L...²
...but(12-30)X more than a random sample of Canadians.