What angle offset does the face of a Gracey curette have in relation to the terminal shank?

The face of a Gracey curette is designed with a specific angle offset from the terminal shank to optimize its performance for periodontal debridement. This unique angle—specifically 110 degrees—allows the curette to effectively adapt around tooth contours and maintain proper angulation against the tooth surface during scaling and root planing procedures.

The design ensures that when the instrument is in use, the face of the blade remains aligned with the tooth surface, which helps in maximizing the effectiveness of the cutting edge while minimizing the risk of tissue trauma. This angled face allows the clinician to reach areas that may be difficult to access otherwise, such as furcations or concavities, enhancing overall periodontal treatment outcomes.

Understanding this angle is crucial for proper instrument selection and technique, as it informs the clinician about the specific applications of Gracey curettes compared to other instruments in periodontal therapy.