theory keywords ch 36 pg 628

fine-grained sharpening stone quarried from natural mineral deposits

to smooth and polish; an effect that can result when a dull scaler or curet is passed over tenacious calc in attempt to remove the deposit

the fine line formed where the face and lateral surfaces of a scaler or curet meet when the instrument is sharp when the instrument is dull, the line has thickness and may even reflect light

a sharpening stone

sharpening

a sharpening stone mounted on a metal mandrel for use in a dental handpiece

when a scaler or curet is sharp, the cutting edge is a fine line that does not reflect light

plastic 1/4 inch rod, 3 inches long, used to test the sharpness of a scaler or curet