Ultrasonics

Question 1

Which sides of the ultrasonic do we use?

Answer 1

laterals and back sides

Question 2

What side of the ultrasonic do we NEVER use?

Answer 2

never use point of tip, avoid face of tip

Question 3

All strokes used to remove calc deposits with ultrasonic

Answer 3

horizontal, oblique, vertical (magnetorestrictive)

Question 4

When is use of ultrasonics contradicted?

Answer 4

-unshielded pacemaker
-issues w/ swallowing (dysphagia)
-COPD lung disease
-on restorative work

Question 5

Deplaquing power setting

Answer 5

low/ out of phase

Question 6

Calc removal power setting

Answer 6

medium/ in phase

Question 7

What is the stroke pattern for magnetorestrictive ultrasonics

Answer 7

eliptical

Question 8

What is amplitude?

Answer 8

POWER; measure of how far the powered end delivers a stoke
*can only control power, not frequency (how fast tip moves)

Question 9

Technique for subgingival calc removal

Answer 9

Top down approach/channeling
start at top of deposit and work in apical direction

Question 10

Difference between 25K and 30K powered tip

Answer 10

25k: shorter less powerful strokes
30k: longer more powerful strokes

Question 11

What is cavitation?

Answer 11

action that causes bubbles to form and collapse when water contacts vibrating working end
aids in breaking up microbial matrix of biofilm

Question 12

Importance of water flow to working end

Answer 12

prevents overheating of the tip to avoid pulpal damage, increases visibility

Question 13

Triple Bend (orange)

Answer 13

SUPRA
mod-heavy

Question 14

Slimline/Swivel (black)

Answer 14

SUB
mod-heavy
good for concavities, root curves, furcations

Question 15

Perio (blue)

Answer 15

SUB
mod-heavy
straighter tip reaches into deep pockets