Scalers are held in the modified pengrip (between the thumb, the index finger and the middle finger). Since instruments for scaling and rootplaning are used with a certain amount of pressure a correct grasp, proper point of support and stable but flexible finger rest are very important.
The scaler 11A/12A is used for the removal of calculus (and plaque) in the whole mouth (universal instrument). The technique of this instrument is identical to the technique of the scaler S204SD. The scaler 11A/12A is bigger and the working part is thicker.
Scalers are suitable for removal of calculus up to a pocket depth of 3 mm. In deeper pockets the chances that the sharp tip of the instrument can cause damage to the surrounding tissue is too great.
