Which of the following is the weakest phase in amalgam reaction?
The mercury phase is the weakest phase in the product mass, and when it exceeds a certain volume limit, there will be a drastic drop in the strength and hardness properties of amalgam, in addition to increase in flow and creep of the restoration.
Reference: Marzouk Operative dentistry, pg-106
The voids phase
The trace element phase
The mercury phase
The interphase