The silver, copper and mercury amalgam is the tooth restoration material that has been most widely used to date. This is due to its excellent cost/benefit ratio and it is therefore very likely that even though more modern and esthetic dental restoration materials exist, this material will continue to be used for a long time. A large quantity of copper has been added to the classic amalgams, eliminating the gamma 2 phase that led to a higher susceptibility of the amalgam to corrosion. For this reason, the amalgam alloys currently used are called non-gamma 2. The amalgam is inserted into the cavity as a paste, compacted, remodeled and, after hardening, polished (16).