26 Aug 2016
silver amalgam dental fillings

Silver Amalgam Fillings Toxicity

There is much discussion on Mercury Amalgam Filling toxicity.  I would like to share a 2007/2009 Canadian Health Measures Survey that assessed the relationship between mean urinary mercury concentration in the general Canadian population and the number of amalgam surfaces.  The researchers also reviewed data on mercury levels for males and females and for different age groups.

To translate, the team looked at the total number of silver amalgam fillings in a patient and compared it to how much mercury was in their urine.  They also looked for gender and age differences.

The results show that the overall mean mercury concentration was well below levels associated with any health risks, regardless of the number of amalgam surfaces.  Overall, approximately 98% of participants had mercury levels that were lower than levels considered to pose a health risk.  The study was in line with studies conducted in the US and Europe.  It demonstrated that dental amalgams are not a hazardous source of elemental and inorganic mercury in human beings.

The study authors acknowledge that the levels of mercury they measured could not be attributed to dental amalgam alone.  Other sources of mercury, such as contaminated fish and seafood, could also contribute to the mercury levels they observed.  (That being said, if there were other sources of mercury, the levels from the Silver fillings would be even less.)



Nicolae A, Ames H, Quinonez C.  Dental amalgam and urinary mercury concentrations