Elimination of which compound in the gamma-2 phase of amalgam setting increases clinical longevity in today's high-copper amalgam restorations?

Question

Quizplus · Accepted Answer

The gamma-2 phase (Sn8Hg) in dental amalgam, which is a mercury-tin phase, is susceptible to corrosion and contributes to the failure of dental restorations. High-copper amalgams were developed to eliminate or significantly reduce the gamma-2 phase, replacing it with copper-tin phases that are more resistant to corrosion, thereby increasing the clinical longevity of the restorations.

Elimination of Which Compound in the Gamma-2 Phase of Amalgam