All of the following influence the energy emitted from the working end of an ultrasonic instrument except:

Question

Quizplus · Accepted Answer

Water does not influence the energy emitted. The water is used to cool magnetostrictive instruments and for cavitation for all ultrasonic instruments. Pressure increases the effect of the working end on the root or crown. Too much pressure will cause the tip to dampen or stop. When too much pressure is used, calculus removal can be less effective. The longer the time of exposure on the same tooth surface, the greater the energy emitted. The greater the angle of application of the working end to the tooth, the greater the energy output. The tooth to working end angle should be 15 degrees or less. A square end emits more energy. Rounded working ends are preferred for light periodontal debridement to enhance comfort and prevent potential hard and soft-tissue trauma.

All of the Following Influence the Energy Emitted from the Working