Wedge Sharpening Stone
Why Sharpen?
 Instruments should be kept sharp and true to their original design. Dental procedures are most effective when using sharp instruments because they reduce fatigue, improve deposit removal, save time and improve tactile sensitivity.
When to sharpen?
Repeated use of an instrument wears away minute particles of metal from the blade causing the cutting edge to take on a rounded shape resulting in a dull, ineffective blade.
When a blade is dull, the Technician loses the ability to ‘feel’ the sharp edge ‘grabbing’ onto a surface. It may then seem that the blade is ‘sliding’ over the surface or deposit which causes them to work harder to remove deposits.
For best results, instruments should be sharpened lightly after each use rather than reconditioning or recontouring after repeated use. Remember that consistent sharpening on a regular basis is preferable to an extensive amount of sharpening or reconditioning all at once.
Sharpening Stone
Wedge Stone- The wedge stone is a rectangular-shaped stone with rounded edges.
Stone Care- After each use, stones should be wiped with a clean cloth to remove metal particles. Alternate the areas used for sharpening to prevent ‘grooving’ in the stone.
Stone Lubrication- Ceramic stones may be lubricated with water or used dry.
Curettes & Scalers
These are sharpened on either side of the stone using the curve that best suits their shape. Use a back and forth and a rotating movement of the stone to sharpen the face of the instrument.
Elevators
These are sharpened on the flat surface of the stone. The elevator is held in the hand with the index finger just behind the point, with the instrument being drawn back towards you while maintaining the angle of the cutting surface of the elevator.
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