What is the silver-metal filling material mixed with mercury called?

• A. Amalgam
• B. Composite Resin
• C. Zinc Oxide Eugenol
• D. Gold Alloy

Answer: (A)

The material is dental amalgam. Dental amalgam is made by mixing a powdered alloy containing metals like silver, tin, copper (and sometimes zinc) with elemental mercury. This triturated blend forms a pliable paste that can be packed into a prepared cavity and then sets into a durable filling. Amalgam is well known for its strength and longevity, especially in back teeth that endure heavy chewing. The other materials listed—composite resin (tooth-colored polymer-based filling), zinc oxide eugenol (often used as a temporary filling or base), and gold alloy (used for crowns or inlays)—are different types of dental materials with distinct properties and uses.