The amalgam mixes should be discarded after?: (A) 3.5 minutes, (B) 2.5 minutes, (C) 1.5 minutes, (D) 2 minutes
Answer is A. Amalgam mixes should be discarded after 3.5 minutes. It may enhance microleakage and diminished retention of the restoration will result.
Reference: Marzouk Operative dentistry, pg-113,114