Instrumentation and Clock Position Practice Test 2026 - Free Practice Questions and Study Guide

Area-specific curettes are designed with a single active cutting edge on each blade. This means only one edge actually cuts and removes calculus, while the opposite edge serves as a guide to help maintain the correct angulation and protect the soft tissue. This one-edge design lets the instrument be optimized for specific tooth surfaces and access, making work on restricted areas more precise and efficient. If there were two or more cutting edges, the instrument wouldn’t be the area-specific type but rather a universal design that uses multiple edges. So the correct number of cutting edges is one.