Module 2 Ultrasonics Flashcards Preview

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Flashcards in Module 2 Ultrasonics Deck (26):
1

What are the 3 main modes of action of an ultrasonic scaler?

Mechanical
Cavitation
Irrigation

2

Sonic Scalers use what form of energy?

air pressure

3

Ultrasonic Scalers use what form of energy?

electrical

4

What is required to dissipate the heat produced at the vibrating tip?

water

5

Cavitation is the action created by the formation and collapse of _____ in the water?

bubbles

6

Cavitation can remove ______ from root surface and can destroy?

endotoxins
surface bacteria

7

Amplitude is the distance of ______which determines?

tip movement
power output

8

Is amplitude adjustable?

yes

9

Frequency is the _____of the tip movement?

speed

10

Frequency is measured in?

cycles per second

11

Amplitude is measured in?

mm

12

What are the 3 types of power-driven scalers?

Sonic
Magnetostrictive
Piezoelectric

13

Vibrations and heat from the ultrasonic may damage ______ in children?

pulp tissue

14

You should avoid areas of ______ and ____ when using the ultrasonic?

demineralization
exposed dentin

15

Powered scalers can decrease risk of _____ in clinicians?

carpal tunnel

16

Constant _____ of instrument, correct ______ and ample _______ are essential to safe operation of ultrasonic devices?

motion
angulation
water

17

What kind of tips are used on low power and effective for fine scaling and root planning?

diamond coated

18

Excessive lateral pressure can cause damage to ______, ______Of calculus, and _____ of tip vibrations?

tooth
burnishing
deactivation

19

A US tip w/out power can be used as a _____only?

probe

20

A __ to _____mm loss in length of US tip renders the tip ineffective?

2-3

21

T/F the gingival changes are apparent immediately after instrumenting?

F

22

The sulcus can be gently probed after _____time frame after tx.

2wk

23

When should pt. instructions be presented following periodontal instrumentation?

at end of each appt.

24

What 3 solutions are soothing to gingiva after periodontal instrumentation?

Salt water
Sodium bicarbonate
Chlorhexidine

25

There is a shift from _____ gram______ to ______gram ______ after periodontal instrumentation?

anaerobic -
aerobic +

26

Without personal daily biofilm control the germs can return to pretreatment levels within ___days

42