Sharp cutting edge to reduce force and pressure applied to the tooth
Rigid shanks allow the removal of heavy calculus deposits
Texturing on the handle increases control
Hollow handles are lightweight and reduce hand fatigue
Design
Each working end has a cutting edge on both sides of the blade and a rounded toe.
In cross section, the blade appears semicircular with a convex base.
The lateral border of the convex base forms a cutting edge with the face of the semicircular blade.
Cutting edges are present on both sides of the blade.
The blade curves from the shank towards the toe and also appears to curve to the side.
Offset blade; face the blade beveled at 60 degrees to shank.
This unique angulation allows the blade to be inserted in the precise position necessary for subgingival scaling and root planing, provided the lower shank is parallel to the long axis of the tooth surface being scaled.
The flexible shank of the Gracey provides tactile sensitivity.
Double-ended curettes provide a more convenient and faster switch between root surfaces.
Description
Gracey curettes are representative of the area-specific curettes, a set of several instruments designed and angled to adapt to specific anatomic areas of the dentition.
Curettes can be adapted for and provide good access to deep pockets with minimal tissue trauma.
Furthermore, it provides sub-gingival adaptation around the root surfaces.
These curettes and their modifications are probably the best instruments for subgingival scaling and root planing because they provide the best adaptation to complex root anatomy.
Modifications
Double-ended Gracey curettes are paired in the following manner:
Gracey #1-2 and #3-4: Anterior teeth
 Gracey #5-6: Anterior teeth and premolars
 Gracey #7-8 and #9-10: Posterior teeth, facial and lingual
 Gracey #11-12: Posterior teeth, mesial
Gracey #13-14: Posterior teeth, distal
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