Which material in amalgam aids in bonding to mercury?

Tin plays a crucial role in the bonding process of amalgam fillings with mercury. When amalgam is created, the components of silver, copper, tin, and zinc combine with mercury to form a malleable and durable dental material. In this amalgam mixture, tin specifically reacts with mercury to create a unique compound that enhances the overall properties of the amalgam.

The presence of tin contributes to the amalgamation process by forming a relatively strong bond with mercury. This bond ensures a better consistency and minimizes the chances of creep or dimensional changes in the finished amalgam restoration. Additionally, tin helps improve the alloy's fluidity, which is essential for filling in the intricate details of a cavity preparation and achieving a close adaptation to the tooth structure.

While other elements like silver and copper also contribute to the overall performance and properties of the amalgam, it is the tin that specifically aids in the fundamental reaction with mercury that creates the cohesive material used in dental restorations.