The fifth generation amalgam included?: (A) Silver, copper, tin, (B) Silver, copper, zinc, tin, indium, (C) Silver, copper, tin, indium, (D) Silver, copper, tin, palladium
Answer is C. The alloying of silver, copper, tin and indium together creating a quaternary alloy in which almost none of the tin is available to react with the mercury when mixed with the powder, was the 5th generation amalgam to be developed.
Reference: Marzouk Operative dentistry, pg-106