If you’ve ever sat in a dentist’s chair for a cavity filling, you’ve probably noticed a variety of shiny tools moving in and out of your mouth. One of these tools—though often overlooked—is the amalgam carrier. It may look simple, but its role in cavity filling is anything but small. Think of it as the “delivery truck” that safely transports filling material right into the tooth. In this guide, we’ll break down exactly what amalgam carriers do, how they’re used step-by-step in cavity fillings, and why they’re still relevant in modern dentistry.