The ADA says this is perfectly safe as the basis for amalgam fillings-- it combines with other materials to make it stable
The 
Americas: The existence of that treaty is creating momentum to end... [DOC] [TLE] Mercury Filling Toxicity - DR Vizcarra [PAR] Each amalgam filling has as much mercury as a thermometer, and its ... ADA still 
uses the deceptive word "silver" to describe a product that is .... "The proposed 
project entailed making about 200 dental amalgams of .....