Subject: Module 09: Technique Essentials: Movement and Orientation to Tooth Surface
1. The act of moving the instrument to produce an instrumentation stroke is termed motion
activation. The act of rotating the hand and wrist as a unit to provide the power for an
instrumentation stroke is called digital motion activation.
A. Both statements are true.
B. Both statements are false.
C. The first statement is true; the second statement is false.
D. The first statement is false; the second statement is true.
Answer: C
Subject: Module 09: Technique Essentials: Movement and Orientation to Tooth Surface
2. A classmate complains of muscle pain in his fingers after a clinic session in which he was
removing calculus deposits with a hand-activated instrument. Which of the following techniques
is the most likely cause of his muscle strain?
A. Using digital motion activation with the instrument
B. Using his thumb and index finger to roll the handle to maintain adaptation
C. Using the ring finger to stabilize the hand in the mouth
D. Pivoting the hand on the fulcrum finger
Answer: A
Subject: Module 09: Technique Essentials: Movement and Orientation to Tooth Surface
3. Instrumentation strokes are usually large movements to cover as much of the tooth surface as
possible. During motion activation for calculus removal, it is best to keep the ring finger
(fulcrum finger) in a curved, relaxed position.
A. Both statements are true.
Copyright © 2016 by Jones & Bartlett Learning, LLC, an Ascend Learning Company 9-1
, B. Both statements are false.
C. The first statement is true; the second statement is false.
D. The first statement is false; the second statement is true.
Answer: B
Subject: Module 09: Technique Essentials: Movement and Orientation to Tooth Surface
4. Rolling the instrument handle between the thumb and the index finger aids the clinician in
maintaining adaptation of the working-end to the tooth surface. It is easier to roll the instrument
handle if the thumb and index finger are overlapped on the handle.
A. Both statements are true.
B. Both statements are false.
C. The first statement is true; the second statement is false.
D. The first statement is false; the second statement is true.
Answer: C
Subject: Module 09: Technique Essentials: Movement and Orientation to Tooth Surface
5. Digital motion activation is produced by flexing the ring finger to create motion. Digital
motion activation is used for calculus removal with an ultrasonic instrument since the machine
provides the power for the instrumentation stroke.
A. Both statements are true.
B. Both statements are false.
C. The first statement is true; the second statement is false.
D. The first statement is false; the second statement is true.
Answer: D
Subject: Module 09: Technique Essentials: Movement and Orientation to Tooth Surface
Copyright © 2016 by Jones & Bartlett Learning, LLC, an Ascend Learning Company 9-2
1. The act of moving the instrument to produce an instrumentation stroke is termed motion
activation. The act of rotating the hand and wrist as a unit to provide the power for an
instrumentation stroke is called digital motion activation.
A. Both statements are true.
B. Both statements are false.
C. The first statement is true; the second statement is false.
D. The first statement is false; the second statement is true.
Answer: C
Subject: Module 09: Technique Essentials: Movement and Orientation to Tooth Surface
2. A classmate complains of muscle pain in his fingers after a clinic session in which he was
removing calculus deposits with a hand-activated instrument. Which of the following techniques
is the most likely cause of his muscle strain?
A. Using digital motion activation with the instrument
B. Using his thumb and index finger to roll the handle to maintain adaptation
C. Using the ring finger to stabilize the hand in the mouth
D. Pivoting the hand on the fulcrum finger
Answer: A
Subject: Module 09: Technique Essentials: Movement and Orientation to Tooth Surface
3. Instrumentation strokes are usually large movements to cover as much of the tooth surface as
possible. During motion activation for calculus removal, it is best to keep the ring finger
(fulcrum finger) in a curved, relaxed position.
A. Both statements are true.
Copyright © 2016 by Jones & Bartlett Learning, LLC, an Ascend Learning Company 9-1
, B. Both statements are false.
C. The first statement is true; the second statement is false.
D. The first statement is false; the second statement is true.
Answer: B
Subject: Module 09: Technique Essentials: Movement and Orientation to Tooth Surface
4. Rolling the instrument handle between the thumb and the index finger aids the clinician in
maintaining adaptation of the working-end to the tooth surface. It is easier to roll the instrument
handle if the thumb and index finger are overlapped on the handle.
A. Both statements are true.
B. Both statements are false.
C. The first statement is true; the second statement is false.
D. The first statement is false; the second statement is true.
Answer: C
Subject: Module 09: Technique Essentials: Movement and Orientation to Tooth Surface
5. Digital motion activation is produced by flexing the ring finger to create motion. Digital
motion activation is used for calculus removal with an ultrasonic instrument since the machine
provides the power for the instrumentation stroke.
A. Both statements are true.
B. Both statements are false.
C. The first statement is true; the second statement is false.
D. The first statement is false; the second statement is true.
Answer: D
Subject: Module 09: Technique Essentials: Movement and Orientation to Tooth Surface
Copyright © 2016 by Jones & Bartlett Learning, LLC, an Ascend Learning Company 9-2
