Obtaining a bacterial plaque sample for microscopic evaluation requires all of the following  EXCEPT:

One effective way to reduce the number of airborne organisms in the aerosols produced by an electronically powered instrument is: 

The fluid stream flowing through a powered instrument tip produces bactericidal effects.  Slim-diameter insrument tips penetrate deeper into periodontal pockets than do hand instruments.  

Ultrasonic instruments are used with light stroke pressure. The very end (point/tip) of the ultrasonic tip should be directly adapted to the tooth surface.  

The power knob on an ultrasonic device controls which of the following? 

What mechanism does an ultrasonic use to remove calculus deposits fro the tooth surface?

Which of the following BEST describes the ethical principle of nonmaleficence? 

The appropriate mechanism of action for a magnetostrictive device is:

From the list below, select the cause(s) of a hot handpiece while scaling with a magnetostrictive scaling device.  1. distorted insert stack 2. trapped air bubble in handpiece 3. inadequate volume flow of water 4. power setting is too high

A system such as ORA, which facilitates the inclusion of multiple aspects of patient information in a concise and structured manner can be used to: