HOSA Dental Terminology Practice

Which type of bur is specifically used to cut tooth structure?

1. Finishing burs

2. Tapered fissure burs

3. Burs

4. Excavating burs

The correct answer is: Burs

The classification of burs is essential in dentistry, especially concerning their specific functions during procedures. When discussing burs used for cutting tooth structure, the focus shifts primarily to their design and purpose. Burs, in general, are rotary instruments used in dental drills, crafted with various shapes and sizes to accomplish different tasks, including cutting, finishing, and excavating. Among these, tapered fissure burs and excavating burs are specialized for certain functions. Tapered fissure burs are designed to cut enamel and dentin and are often used in cavity preparation due to their specific geometry that allows for effective cutting and creating smooth walls in the cavity. Excavating burs, on the other hand, are typically utilized to remove decayed tooth structure. Therefore, while the term "burs" is broader and encompasses various types used in cutting and other operations, it serves as an umbrella term that includes those designed specifically to slice through tooth structure. Recognizing that "burs" is the general category under which different types, including those that specifically cut tooth structure, fall helps in understanding its relevance in dental practices.