For an abrasive,the higher the speed,the greater the frequency per unit of time the particle contacts the surface.In a clinical situation it is easiest to control pressure rather than speed to vary the rate of abrasion.

Question

Quizplus · Accepted Answer

The first statement is true as higher speed results in greater frequency of contact with the surface. However, the second statement is false as pressure and speed are interrelated factors and controlling pressure alone cannot vary the rate of abrasion. The speed of the abrasive also needs to be controlled.

For an Abrasive,the Higher the Speed,the Greater the Frequency Per