CLINIC THEORY MIDTERM 1
COMPREHENSIVE EXAMINATION TEST
2026 FULL QUESTIONS AND CORRECT
ANSWERS
◉What mechanism of action is characterized by formation and
explosive collapse of micro bubbles in a flowing liquid? Answer:
Cavitation
◉What occurs near any object in oscillatory motion in liquid?
Answer: Acoustic microstreaming
◉What metal is the ultrasonic insert? Answer: Nickel
◉What is the magnetostrictive handpiece made of? Answer: Copper
wires
◉What is piezoelectric handpiece made of? Answer: A crystalline
disk
◉What is a characteristic of a piezo tip? Answer: Screwed on by
torque wrench
, ◉What is operating frequency? Answer: The number of complete
back and forth cycles the oscillating tip completes per second
(measured in kilohertz)
◉30 kilohertz is how many strokes per second? Answer: 30,000
◉What does the power input control? Answer: Displacement
(length of movement) of the oscillating tip
◉What tip is also referred to as thin or perio and is 30-40%
narrower and can be circular or rectangular? Answer: Slim
◉What tip has a mass 40% thinner than the slim and currently can
only be circular in shape? Answer: Ultra-slim
◉What is the active area of an ultrasonic tip? Answer: 4mm
◉Which part of the ultrasonic tip has the least fore exerted?
Answer: Face
◉What three things are needed to produce an appropriate level of
acoustic power? Answer: Displacement amplitude, tip diameter, tip
shape
COMPREHENSIVE EXAMINATION TEST
2026 FULL QUESTIONS AND CORRECT
ANSWERS
◉What mechanism of action is characterized by formation and
explosive collapse of micro bubbles in a flowing liquid? Answer:
Cavitation
◉What occurs near any object in oscillatory motion in liquid?
Answer: Acoustic microstreaming
◉What metal is the ultrasonic insert? Answer: Nickel
◉What is the magnetostrictive handpiece made of? Answer: Copper
wires
◉What is piezoelectric handpiece made of? Answer: A crystalline
disk
◉What is a characteristic of a piezo tip? Answer: Screwed on by
torque wrench
, ◉What is operating frequency? Answer: The number of complete
back and forth cycles the oscillating tip completes per second
(measured in kilohertz)
◉30 kilohertz is how many strokes per second? Answer: 30,000
◉What does the power input control? Answer: Displacement
(length of movement) of the oscillating tip
◉What tip is also referred to as thin or perio and is 30-40%
narrower and can be circular or rectangular? Answer: Slim
◉What tip has a mass 40% thinner than the slim and currently can
only be circular in shape? Answer: Ultra-slim
◉What is the active area of an ultrasonic tip? Answer: 4mm
◉Which part of the ultrasonic tip has the least fore exerted?
Answer: Face
◉What three things are needed to produce an appropriate level of
acoustic power? Answer: Displacement amplitude, tip diameter, tip
shape
