A comparative electrochemical in vitro evaluation of the corrosion behaviour of dental amalgams

The electrochemical corrosion behaviour of 16 currently marketed amalgams for dental fillings was studied in vitro. Depending upon the type of amalgam and the treatment of the filling the electrochemical corrosion currents derived from cyclic voltammograms varied over several orders of magnitude. Their change as a function of time was also very different. Suggestions are made for a stability rating of the products based on the results obtained.