Choosing Gracey Curettes by Tooth Surface: A Practitioner's Guide
Introduction
Gracey curettes are among the most essential instruments in periodontal therapy. Unlike universal curettes, each Gracey curette is designed for a specific tooth surface or region — making correct selection critical for effective subgingival debridement and root planing. This guide helps dental practitioners choose the right Gracey curette for every clinical situation.
What Makes Gracey Curettes Unique?
Gracey curettes feature an offset blade — the face of the blade is angled at approximately 60–70° to the shank, rather than 90° as in universal curettes. This design means only the lower cutting edge is used, and the instrument must be adapted correctly to each tooth surface. The benefit is superior adaptation to root anatomy and reduced tissue trauma.
Gracey Curette Numbering System
The numbering system follows a logical pattern based on the area of the mouth and tooth surface:
- Gracey 1/2 & 3/4 — Anterior teeth (incisors and canines), all surfaces
- Gracey 5/6 — Anterior teeth and premolars, all surfaces
- Gracey 7/8 — Posterior teeth, facial and lingual surfaces
- Gracey 9/10 — Posterior teeth, facial and lingual surfaces (deeper pockets)
- Gracey 11/12 — Posterior teeth, mesial surfaces
- Gracey 13/14 — Posterior teeth, distal surfaces
Selecting by Tooth Surface
Anterior Teeth
For incisors and canines, the Gracey 1/2 is the go-to choice for all surfaces. The Gracey 3/4 offers a slightly longer terminal shank for deeper pockets. The Gracey 5/6 is versatile and transitions well into premolar regions.
Premolars
The Gracey 5/6 adapts well to premolar facial and lingual surfaces. For mesial and distal surfaces of premolars, the Gracey 11/12 and 13/14 can be used with careful adaptation.
Posterior Mesial Surfaces
The Gracey 11/12 is specifically designed for mesial surfaces of posterior teeth. Its angled shank allows access to the mesial aspect without impinging on adjacent teeth.
Posterior Distal Surfaces
The Gracey 13/14 is the instrument of choice for distal surfaces of molars and premolars — often the most challenging surfaces to instrument due to limited access.
Posterior Facial and Lingual Surfaces
The Gracey 7/8 and 9/10 are designed for buccal and lingual surfaces of posterior teeth. The 9/10 is particularly useful in deeper pockets where the longer shank provides better reach.
Tips for Correct Adaptation
- Always use the lower cutting edge (the one closest to the tissue)
- Maintain a 0–5° angulation between the blade face and the root surface during insertion
- Open to 45–90° for the working stroke
- Use overlapping strokes to ensure complete coverage
- Regularly sharpen your curettes — a dull blade increases lateral pressure and patient discomfort
Choosing Between Standard and Extended Shank Designs
Standard Gracey curettes are suitable for most clinical situations. However, for pockets deeper than 5mm, consider extended shank (After Five) or mini-bladed variants, which offer improved access to deep subgingival areas and furcations.
Shop Gracey Curettes at Virco
At Virco, we stock professional-grade Gracey curettes designed for precision and durability. Whether you need a complete set or individual instruments, our range covers every clinical need.
Shop our Gracey Curettes Set of 7 — ideal for a comprehensive periodontal kit covering all tooth surfaces.
Shop our Silicone Coated Gracey Curettes Set of 7 — featuring ergonomic silicone handles for reduced hand fatigue during extended procedures.
Browse our full Curettes & Scalers collection for the complete range.