Silver daily intake

There have been numerous reports of possible allergic reactions to mercury and mercury salts and to the mercury, silver and copper in dental amalgam as well as to amalgam corrosion products Studies of the release of mercury by amalgams into distilled water, saline and artificial saliva tend to be conflicting and contradictory but, overall, the data indicate that mercury release drops with time due to film formation and is less than the acceptable daily intake for mercury in food . Further, while metallic mercury can sensitise, sensitisation of patients to mercury by dental amalgam appears to be a rare occurrence. Nevertheless, there is a growing trend to develop polymer-based posterior restorative materials in order to eliminate the use of mercury in dentistry. 

It is estimated that the normal adult body contains approximately 1.0 mg of silver, though this will vary depending on the levels of exposure. It is estimated that the average daily intake of silver by humans is <0.1 mg however, individuals seem to absorb silver selectively, for unknown reasons. From the above-mentioned recent transfer study by Wappelhorst et al. (2002), an average silver intake of 16.6 31.7 pg per day was calculated, which is of the order of the estimated daily intake of <0.1 mg per day. 

Figure 2. Annual average daily intake of arsenic (as As Os) in the US. total diet as a function of the method of analysis Mo blue = molybdenum blue method AgDDC = silver diethyldithiocarbamate method A A hydride = arsine evolution, atomic absorption determination.

Daily intake of total silver from all sources by humans in the United States ranged from... 

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