Abstract
Two commercially available dental amalgams are studied with respect to microstructural and phase changes during exposition at higher temperatures as compared with the temperature in the mouth. High-copper amalgam Ana 2000 was found to be more thermally stable than low-copper amalgam Safargam. Transformation of gamma-1 phase was observed only in the amalgam Safargam. Mercury released during this phase change reacts with silver-rich particles forming new amalgamation products. Evaporation of certain amount of mercury from amalgam surface is expected.

Key words
dental amalgams, high-copper amalgam Ana 2000, amalgam Safargam, phase changes

Full text not available