HOSA Dental Terminology Practice

What is the primary use of the cleoid/discoid instrument in dental practices?

1. To mix alginate

2. To carve amalgam

3. To dry root canal

4. To take jaw measurements

The correct answer is: To carve amalgam

The cleoid/discoid instrument is primarily used for carving amalgam in dental practices. This instrument features a unique shape with a pointed end (the cleoid) for shaping and carving, and a flat end (the discoid) for smoothing amalgam restorations. When dentists place dental amalgam in cavities, they need to ensure that the restoration is not only functional but also anatomically correct, replicating the natural contours of the tooth. This is where the cleoid/discoid instrument comes into play, allowing for precise shaping and finishing of the amalgam material to achieve optimal results in terms of both aesthetics and function. While other tools fulfill the tasks mentioned in the other options, they do not perform the specific function of carving amalgam. For example, mixing alginate typically involves a specific bowl and spatula, drying root canals employs various endodontic instruments, and taking jaw measurements requires bite registration materials and tools. Hence, these tasks are distinct from the primary purpose of the cleoid/discoid instrument.