What is the primary design feature of a Gracey curette blade?

The primary design feature of a Gracey curette blade is its single cutting edge. This characteristic allows for precise and effective scaling and root planing in periodontal therapy. The single cutting edge is positioned at a specific angle relative to the handle, which facilitates access and instrumentation in deep periodontal pockets and on root surfaces, enhancing tactile sensitivity and control during instrumentation.

Moreover, the Gracey curette is designed with a rounded toe and a curved blade, which helps in adapting to the contours of the tooth and the anatomy of the periodontal pocket. This design is critical for minimizing trauma to the surrounding tissues while effectively removing calculus and biofilm from the root surface.

The unique single cutting edge of Gracey curettes allows clinicians to use specific instruments for different surfaces of teeth, such as mesial or distal angles, providing an efficient and targeted approach to periodontal treatment.