Ultrasonic

Question 1

Objectives of Periodontal Debridement

Answer 1

• Disruption and removal of subgingival biofilm
• Removal of plaque retentive factors
• Conservation of tooth structure
• Resolution of inflammation

Question 2

What is the primary action of ultrasonic instrumentation?

Answer 2

Mechanical action.

Question 3

What is the purpose of irrigation with ultrasonic instruments?

Answer 3

Irrigation uses water to counteract frictional heat generated by the oscillating tip moving against the tooth surface.

Question 4

What is cavitation in ultrasonic instrumentation?

Answer 4

The formation and explosive collapse of microscopic bubbles in a liquid due to forces acting on the liquid.

Question 5

What is acoustic microstreaming?

Answer 5

It occurs near any object in oscillatory motion in liquid, creating fluid movement around the object.

Question 6

Magnetostrictive armamentarium

Answer 6

Insert
Handpiece
Base unit
Foot switch

Question 7

Piezoelectric armamentarium

Answer 7

Tip
Handpiece
Base unit
Foot switch

Question 8

Ultrasonic Operational Variables

Answer 8

Operating frequency
Power input
Water flow rate
Tip diameter
Tip shape

Question 9

What factors influence the amount of cavitation and microstreaming activity?

Answer 9

The efficiency of the mechanical mechanism of action and the acoustic power.

Question 10

What factors affect the level of acoustic power in ultrasonic instrumentation?

Answer 10

Displacement amplitude
Tip diameter
Tip shape.

Question 11

What does the diameter of an ultrasonic tip refer to?

Answer 11

The width of the tip.

Question 12

What are key design features of ultrasonic tips?

Answer 12

Diameter, shape, geometry, profile, and monitoring tip.

Question 13

What are the possible shapes of an ultrasonic tip?

Answer 13

Circular or rectangular cross-section.

Question 14

What is the geometry of an ultrasonic tip?

Answer 14

The number of places the shank crosses.

Question 15

What does the profile of an ultrasonic tip refer to?

Answer 15

The number of bends in the active area.

Question 16

When should an ultrasonic tip be replaced?

Answer 16

When 2mm of the tip length is lost, according to manufacturers.

Question 17

What are specialty tips?

Answer 17

Tips designed for specific tasks or areas in ultrasonic cleaning.

Question 18

What is a straight ultrasonic tip?

Answer 18

A tip slightly curved in one direction, for universal use.

Question 19

What are contrangled ultrasonic tips?

Answer 19

Paired instruments used in specific areas.

Question 20

What are periodontal ultrasonic tips?

Answer 20

Thin, straight tips designed for subgingival areas.

Question 21

What are slimline ultrasonic tips?

Answer 21

Tips designed for deeper access to subgingival areas.

Question 22

What are thicker blue and green ultrasonic tips used for?

Answer 22

Higher settings for moderate to heavy calculus.

Question 23

What is the purple ultrasonic tip used for?

Answer 23

It’s thinner, used for light calculus or biofilm disruption and should be used on lower power.

Question 24

What is the purple ultrasonic tip good for?

Answer 24

Gingivitis patients

Question 24

Adaptation techniques for the Ultrasonic

Answer 24

Vertical Horizontal Oblique

Question 25

Ultrasonic Instrumentation Technique Principles

Answer 25

Adaptation Angulation Lateral pressure Working stroke

Question 26

How is the ultrasonic tip advanced in channeling?

Answer 26

The tip is advanced to the base of the pocket using the indicated stroke pattern.

Question 27

How is the grasp determined for ultrasonic instrumentation?

Answer 27

Balancing the handpiece between the thumb and forefinger.

Question 28

What is the purpose of a fulcrum in ultrasonic instrumentation?

Answer 28

stabilization

Question 29

How should ultrasonic instrumentation be done for efficiency?

Answer 29

Work by sextant to reduce the frequency of changing the tip.

Question 30

What is the benefit of working by sextant in ultrasonic instrumentation?

Answer 30

It requires fewer changes in the operator’s position.

Question 31

How should you advance the ultrasonic tip?

Answer 31

Begin on the most terminal tooth and advance toward the operator.

Question 31

How long should you flush water lines before starting?

Answer 31

60 seconds.

Question 32

What should you do before using the ultrasonic handpiece?

Answer 32

Fill the handpiece with water and insert the appropriate tip.

Question 33

How should the water supply be adjusted for ultrasonic instrumentation?

Answer 33

Fine mist

Question 34

How should the ultrasonic tip be positioned on the tooth surface?

Answer 34

The tip should be parallel to the tooth surface.

Question 35

What should the angulation of the ultrasonic tip be near?

Answer 35

Near zero degrees.

Question 36

How much lateral pressure should be applied when using the ultrasonic tip?

Answer 36

Little to no lateral pressure.

Question 37

What is important to remember about the tip during ultrasonic instrumentation?

Answer 37

Keep the tip moving at all times.

Question 38

What are some medical conditions that require special consideration for ultrasonic instrumentation?

Answer 38

Communicable diseases Immunocompromised patients Kidney disease Chemotherapy Organ transplant Respiratory conditions Dysphagia Pacemakers.

Question 39

Which respiratory conditions may require special consideration?

Answer 39

COPD Emphysema Uncontrolled asthma Cystic fibrosis.

Question 40

Why should caution be used with patients who have dysphagia or gag easily?

Answer 40

They are at risk for aspiration pneumonia.

Question 41

What neurological conditions require special consideration during ultrasonic treatment?

Answer 41

Multiple sclerosis (MS) Parkinson's disease Muscular dystrophy (MD) Post-stroke.

Question 42

Can you use a cavitron if the pacemaker is unshielded?

Answer 42

No