How is the term 'alloy' defined in dental practice?

In dental practice, the term 'alloy' specifically refers to a combination of metals mixed with mercury, particularly in the context of dental amalgams used for restorations. Alloys are essential in dentistry because they can be formulated to achieve specific properties, such as strength, durability, and resistance to corrosion, which are critical for materials used in dental procedures. The use of metals in dental alloys allows for improved stability and longevity of restorations, making them a reliable choice for fillings.

The unique interaction of these metals with mercury during the mixing process is what enables the material to be malleable at first, allowing for easy placement in a cavity, before it hardens into a solid, durable structure. This is why identifying an alloy as a combination of metals mixed with mercury is key in understanding its application in dental restorative practices.