FUNDAMENTALS OF PERIODONTAL
INSTRUMENTATION 7TH EDITION CH.
8 QUESTIONS AND ANSWERS
LATEST EDITION
Motion activation - ANS -The muscle action used to move the working end of a periodontal
instrument across a tooth surface
Wrist motion activation - ANS -The act of rotating the hand and wrist as a unit to provide the
power for an instrumentation stroke
Acts as the drive finger when rolling the instrument handle - ANS -Index or thumb
The finger that acts as the pivot - ANS -Fulcrum finger
True or False: Much periodontal instrumentation occurs on the crown surfaces of the teeth -
ANS -False. Much instrumentation occurs on the root surfaces of the teeth
True or false: Teeth are usually tilted in the dental arches - ANS -True. It is a common
misconception that they are positioned vertically in the dental arch
Touching or overlapping fingers makes it easier to roll the instrument handle. Pivoting the hand
and arm makes it more difficult for the clinician in keeping the working-end against the tooth as
it moves around the tooth. - ANS -Both statements are false.
Digital motion activation - ANS -moving the instrument by flexing the thumb, index and middle
fingers. Used whenever physical strength of not required
INSTRUMENTATION 7TH EDITION CH.
8 QUESTIONS AND ANSWERS
LATEST EDITION
Motion activation - ANS -The muscle action used to move the working end of a periodontal
instrument across a tooth surface
Wrist motion activation - ANS -The act of rotating the hand and wrist as a unit to provide the
power for an instrumentation stroke
Acts as the drive finger when rolling the instrument handle - ANS -Index or thumb
The finger that acts as the pivot - ANS -Fulcrum finger
True or False: Much periodontal instrumentation occurs on the crown surfaces of the teeth -
ANS -False. Much instrumentation occurs on the root surfaces of the teeth
True or false: Teeth are usually tilted in the dental arches - ANS -True. It is a common
misconception that they are positioned vertically in the dental arch
Touching or overlapping fingers makes it easier to roll the instrument handle. Pivoting the hand
and arm makes it more difficult for the clinician in keeping the working-end against the tooth as
it moves around the tooth. - ANS -Both statements are false.
Digital motion activation - ANS -moving the instrument by flexing the thumb, index and middle
fingers. Used whenever physical strength of not required
