HOSA Dental Terminology Practice

Which of the following instruments is designed specifically for carving occlusal surfaces?

1. Auto matrix

2. Walls carver

3. Discoid/Cleoid carver

4. Cortical bone chisel

The correct answer is: Discoid/Cleoid carver

The Discoid/Cleoid carver is specifically designed for carving occlusal surfaces in dental restorations. This instrument features a unique design that allows dental professionals to create precise contours and anatomic features on the occlusal surfaces of teeth, such as those found on molars. The discoid end, which is circular, is adept at removing excess material and shaping the surface to mimic the natural anatomy of the tooth, while the cleoid end, which is more pointed, allows for detailed carving and finishing of the restoration. This precision in shaping is essential for achieving optimal occlusion and ensuring that the restored tooth functions properly within the bite. Other instruments mentioned serve different purposes. For example, an auto matrix is used for creating a temporary mold for restorations, and a cortical bone chisel is designed for use in oral surgery rather than for carving tooth anatomy. The walls carver, while potentially useful in shaping dental materials, does not possess the specific tooling and shape required for detailed occlusal work compared to the Discoid/Cleoid carver.