DH201 - powered instrumentation quiz study guide
UPDATED ACTUAL Questions and CORRECT
Answers
p661
what are the two types of powered instrumentation devices? - CORRECT ANSWER sonic and ultrasonic
p661
what two categories do ultrasonic powered devices break down into - CORRECT ANSWER piezoelectric (piezo)
magnetostrictive (magneto)
p661
how does the sonic powered devices work? - CORRECT ANSWER convert air pressure into high frequency sound
wave that produce rapid vibrations of the powered working end
p661
what frequency does the sonic devices relatively operate at inaudibly? - CORRECT ANSWER 3000 to 8000 cycles
per second and are driven by compressed air from the dental unit
p661
how do ultrasonic powered devices work? - CORRECT ANSWER convert electrical energy into high frequency
sound waves that produce rapid vibrations of the powered working end
p661
what frequency does the ultrasonic devices operate at inaudibly? - CORRECT ANSWER 18000 to 50000 cycles
per second (kHz)
p661
which ultrasonic device category (piezo/magneto) uses electrical energy to activate crystals within the handpiece to
produce vibrations of the powered working end? - CORRECT ANSWER piezo
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which ultrasonic device category (piezo/magneto) transfers electrical energy to metal stacks or a ferrous rod to produce
vibrations of the powered working end - CORRECT ANSWER magneto
p662
what are 6 strengths of powered instrumentation? - CORRECT ANSWER 1. effective removal of calculus deposits
and plaque biofilms
2. pocket penetration
3. access to furcation areas
4. irrigation (lavage)
5. shorter instrumentation time
6. facilitation of difficult instrumentation tasks
T/F
p662
when used by skilled clinicians, powered instrumentation has been shown to attain similar results as hand instrumentation
for supra and sub gingival calculus removal and removal of subgingival plaque biofilms - CORRECT
ANSWER true
p662
T/F
you should not use an explorer to reevaluate the treatment area after hand instrumentation or powered instrumentation -
CORRECT ANSWER FALSE - as with hand instrumentation, an explorer is used to thoroughly reevaluate the
treatment area for residual deposits
p662
, pocket penetration - CORRECT ANSWER slim working ends penetrate deeper into periodontal pockets than hand
instruments
p662
access to furcation areas - CORRECT ANSWER slim working ends are effective in treating class II and III
furcations when used by experienced clinicians
p662
irrigation (lavage) - CORRECT ANSWER water irrigation of the pocket washes toxic products and free floating
bacteria from the pocket and provides better vision during instrumentation by removing blood from the treatment site
p662
shorter instrumentation time - CORRECT ANSWER several studies have shown that instrumentation time may be
reduced when using powered instruments in conjunction with hand instruments for effective calculus removal and
treatment planning
p662
facilitation of difficult instrumentation tasks:
in a minor amalgam overhang is acting as a biofilm trap, - CORRECT ANSWER the excess amalgam can be
removed using a specialized powered instrument working end designed for this purpose
T/F
p662
facilitation of difficult instrumentation tasks:
removal of orthodontic cement or debonding of orthodontic brackets is facilitated by use of a powered standard tip -
CORRECT ANSWER true
p662
what are 2 limitations of powered instrumentation? - CORRECT ANSWER -clinician skill level
-production of aerosols
T/F
p662
the clinician skill level is the best predictor of the outcome of periodontal instrumentation regardless of whether hand or
powered instrument is used - CORRECT ANSWER true
p662
a powered instrument is _____ and may even be _____ if the clinician is not skilled in the technique - CORRECT
ANSWER ineffective; harmful
p662
powered instrumentation - whether magneto or piezo - is just as technique sensitive as is ______ ______ - CORRECT
ANSWER hand instrumentation
p662
a complete understanding of _____ anatomy is the key to successful periodontal instrumentation - CORRECT
ANSWER root
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clinicians experience (less/more) tactile sensitivity when using powered instruments than with hand instruments -
CORRECT ANSWER less
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a disadvantage of power driven scalers is the production of ______ contaminated with oral microorganisms - CORRECT
ANSWER aerosols
p662
production of aerosols requires additional care to achieve and maintain good _____ control when using powered
instrumentation - CORRECT ANSWER infection
UPDATED ACTUAL Questions and CORRECT
Answers
p661
what are the two types of powered instrumentation devices? - CORRECT ANSWER sonic and ultrasonic
p661
what two categories do ultrasonic powered devices break down into - CORRECT ANSWER piezoelectric (piezo)
magnetostrictive (magneto)
p661
how does the sonic powered devices work? - CORRECT ANSWER convert air pressure into high frequency sound
wave that produce rapid vibrations of the powered working end
p661
what frequency does the sonic devices relatively operate at inaudibly? - CORRECT ANSWER 3000 to 8000 cycles
per second and are driven by compressed air from the dental unit
p661
how do ultrasonic powered devices work? - CORRECT ANSWER convert electrical energy into high frequency
sound waves that produce rapid vibrations of the powered working end
p661
what frequency does the ultrasonic devices operate at inaudibly? - CORRECT ANSWER 18000 to 50000 cycles
per second (kHz)
p661
which ultrasonic device category (piezo/magneto) uses electrical energy to activate crystals within the handpiece to
produce vibrations of the powered working end? - CORRECT ANSWER piezo
p661
which ultrasonic device category (piezo/magneto) transfers electrical energy to metal stacks or a ferrous rod to produce
vibrations of the powered working end - CORRECT ANSWER magneto
p662
what are 6 strengths of powered instrumentation? - CORRECT ANSWER 1. effective removal of calculus deposits
and plaque biofilms
2. pocket penetration
3. access to furcation areas
4. irrigation (lavage)
5. shorter instrumentation time
6. facilitation of difficult instrumentation tasks
T/F
p662
when used by skilled clinicians, powered instrumentation has been shown to attain similar results as hand instrumentation
for supra and sub gingival calculus removal and removal of subgingival plaque biofilms - CORRECT
ANSWER true
p662
T/F
you should not use an explorer to reevaluate the treatment area after hand instrumentation or powered instrumentation -
CORRECT ANSWER FALSE - as with hand instrumentation, an explorer is used to thoroughly reevaluate the
treatment area for residual deposits
p662
, pocket penetration - CORRECT ANSWER slim working ends penetrate deeper into periodontal pockets than hand
instruments
p662
access to furcation areas - CORRECT ANSWER slim working ends are effective in treating class II and III
furcations when used by experienced clinicians
p662
irrigation (lavage) - CORRECT ANSWER water irrigation of the pocket washes toxic products and free floating
bacteria from the pocket and provides better vision during instrumentation by removing blood from the treatment site
p662
shorter instrumentation time - CORRECT ANSWER several studies have shown that instrumentation time may be
reduced when using powered instruments in conjunction with hand instruments for effective calculus removal and
treatment planning
p662
facilitation of difficult instrumentation tasks:
in a minor amalgam overhang is acting as a biofilm trap, - CORRECT ANSWER the excess amalgam can be
removed using a specialized powered instrument working end designed for this purpose
T/F
p662
facilitation of difficult instrumentation tasks:
removal of orthodontic cement or debonding of orthodontic brackets is facilitated by use of a powered standard tip -
CORRECT ANSWER true
p662
what are 2 limitations of powered instrumentation? - CORRECT ANSWER -clinician skill level
-production of aerosols
T/F
p662
the clinician skill level is the best predictor of the outcome of periodontal instrumentation regardless of whether hand or
powered instrument is used - CORRECT ANSWER true
p662
a powered instrument is _____ and may even be _____ if the clinician is not skilled in the technique - CORRECT
ANSWER ineffective; harmful
p662
powered instrumentation - whether magneto or piezo - is just as technique sensitive as is ______ ______ - CORRECT
ANSWER hand instrumentation
p662
a complete understanding of _____ anatomy is the key to successful periodontal instrumentation - CORRECT
ANSWER root
p662
clinicians experience (less/more) tactile sensitivity when using powered instruments than with hand instruments -
CORRECT ANSWER less
p662
a disadvantage of power driven scalers is the production of ______ contaminated with oral microorganisms - CORRECT
ANSWER aerosols
p662
production of aerosols requires additional care to achieve and maintain good _____ control when using powered
instrumentation - CORRECT ANSWER infection
