ASPEN Dental Assisting Practice Exam

Amalgam is a metal alloy that can be placed directly into a prepared cavity and then hardens into a durable filling, which is ideal for direct posterior restorations. It combines mercury with metals such as silver, tin, and copper to form a hard, wear-resistant mass that withstands the chewing forces in the back teeth. It’s also relatively easy to place and cost-effective, contributing to its longstanding use as a direct restorative material. Ceramic and composite are non-metal materials, not alloys, and gold alloy, while an alloy, is typically used for indirect restorations or specialty cases rather than routine direct fillings.