_____ is added to dental amalgam alloy powder for strength.
silver
Copper is added to dental amalgam alloy powder to increase the strength of the material. Copper helps to form a stronger, more stable crystalline structure, which makes the amalgam more resistant to the stresses and strains of daily use in the mouth. In addition, copper can improve the corrosion resistance of the amalgam and make it more resistant to tarnish or discoloration over time. The amount of copper used in dental amalgam alloys can vary depending on the specific formulation, but it typically ranges from 10-30% by weight. Other elements that may be added to dental amalgam alloys include silver, tin, and zinc.
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