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62 INSTRUMENTS AND APPLIANCES
Lancet is applied more frequently to that form of knife for
use about the mouth, as in the lancing of abscesses and in all
minor oral surgery operations (Fig. 70).
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Fig. 68.—Gates-Glidden Fig. 69.—Kerr tapered canal reamers.
reamers.
Fig. 70.—Bistouries. Fig. 71.—S. S. White scalers.
(g) Scaler.—An instrument for the removal of calculus.
The blade is similar to the hoe and hatchet excavator. The
instrument has various angles in the shank, and is used mostly
