Module 2 Ultrasonics Flashcards
What are the 3 main modes of action of an ultrasonic scaler?
Mechanical
Cavitation
Irrigation
Sonic Scalers use what form of energy?
air pressure
Ultrasonic Scalers use what form of energy?
electrical
What is required to dissipate the heat produced at the vibrating tip?
water
Cavitation is the action created by the formation and collapse of _____ in the water?
bubbles
Cavitation can remove ______ from root surface and can destroy?
endotoxins
surface bacteria
Amplitude is the distance of ______which determines?
tip movement
power output
Is amplitude adjustable?
yes
Frequency is the _____of the tip movement?
speed
Frequency is measured in?
cycles per second
Amplitude is measured in?
mm
What are the 3 types of power-driven scalers?
Sonic
Magnetostrictive
Piezoelectric
Vibrations and heat from the ultrasonic may damage ______ in children?
pulp tissue
You should avoid areas of ______ and ____ when using the ultrasonic?
demineralization
exposed dentin
Powered scalers can decrease risk of _____ in clinicians?
carpal tunnel
Constant _____ of instrument, correct ______ and ample _______ are essential to safe operation of ultrasonic devices?
motion
angulation
water
What kind of tips are used on low power and effective for fine scaling and root planning?
diamond coated
Excessive lateral pressure can cause damage to ______, ______Of calculus, and _____ of tip vibrations?
tooth
burnishing
deactivation
A US tip w/out power can be used as a _____only?
probe
A __ to _____mm loss in length of US tip renders the tip ineffective?
2-3
T/F the gingival changes are apparent immediately after instrumenting?
F
The sulcus can be gently probed after _____time frame after tx.
2wk
When should pt. instructions be presented following periodontal instrumentation?
at end of each appt.
What 3 solutions are soothing to gingiva after periodontal instrumentation?
Salt water
Sodium bicarbonate
Chlorhexidine
