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Dental hygiene > Clinic 2 midterm > Flashcards

Clinic 2 midterm Flashcards

1
Q

How many functional cutting edges does a racy curet have per end?

A

One

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2
Q

What type of calculus can be removed with a Gracey curet?

A

Ridge shank is light to heavy

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3
Q

How are gracey curets different from the universal curets?

A

They can only be used on certain teeth; area specific more complex shank

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4
Q

What type of ridge does the Gracey have in the SJVC cassettes ?

A

Ridge

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5
Q

Which cutting edge of a gracey is used for calculus removal?

A

Lower working cutting edge

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6
Q

Identify the Graceys by # with their area of use

A

1/2-all surfaces of anteriors
7/8-Buccal lingual
11/12- mesial of the posterior teeth
13/14-distal of the posterior teeth
15/16- Mesial,Buccal, lingual of posterior

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7
Q

Gracey is automatically tilted to 70 degrees when?

A

Lower shank is parallel to the tooth surface being instrumented

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8
Q

Who designed gracey curet serious of instruments?

A

Dr. Clayton Gracey

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9
Q

How do you determine the correct working edge of the gracey?

A
  1. Hold the instrument so that you are looking at the face of the working end
    2.position the lower shank so that it is perpendicular to the floor
    3.find the cutting edge that is lower then the other
  2. The lower cutting edge is the one that is used for instrumentation
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10
Q

Best instrumentation sequence

A

Start with the removal of the Supra gingival first and start with the universal

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11
Q

Which 2 instruments have th identical shank but are off set on angles?

A

13/14 & 15/16

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12
Q

What is the purpose of a periodontal file

A

To crush or roughen heavy deposits

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13
Q

Files are never to be used directly on

A

Enamel or root surface it will gawge the surface

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14
Q

What characteristics of the gracey allow it to be used in the deepest area of the sulcus or pockets with no tissue trauma?

A

Round back and rounded toe

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15
Q

Describe the design characteristic of the after 5 curets?

A

3mm longer in the terminal shank

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16
Q

Describe the design characteristics of the mini 5 curets?

A

Shorter blade, working end is about half of the length of a standard gracey; short blade allows easier insertion into narrow pockets and tight tissues

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17
Q

Calculus removal with an ultrasonic tip starts from

A

Top down

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18
Q

What is the first thing you do after turning on the ultrasonic?

A

Flush the waterline and check the power level

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19
Q

How should the tip of an ultrasonic insert be adapted to a tooth?

A

2-4 mm on the lateral sides to the tooth sureface

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20
Q

Why fill the hand piece with water before inserting the tip

A

Expels air bubbles from the hand piece; air bubbles can cause the hand piece to over heat

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21
Q

What type of lateral pressure is applied with powered instruments?

A

None only light touch

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22
Q

How often should the water level be adjusted

A

Everytime you change tips

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23
Q

What is a warm hand piece a sign for?

A

Not enough water

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24
Q

What type of grasp is used with a ultrasonic

A

Modified pen grasp

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25
Q

Standard ultra sonic working end

A

Larger in size with shorter shank length; removes moderate- heavy calculus

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26
Q

Slim line ultra sonic working end

A

40% smaller in size with longer more complex shank removes light- moderate calculus

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27
Q

How are the amounts of energy dispersed on the ultra sonic tip starting from highest power to lowest power?

A

Point of the tip, concave face, convex back, lateral surfaces

28
Q

What is the sequence the serious of ultra sonic tips should be used?

A

Standard first then slim line

29
Q

The tip-tooth surface angulation should be?

A
30
Q

The triple bend standard insert can be used to better adapt to ?

A
31
Q

Which portion of the working end is most frequently used?

A

Lateral surface is the most effective

32
Q

What part of an insert is responsible for calculus removal?

A
33
Q

Frequency

A
34
Q

Amplitude

A
35
Q

What factors influence the powe setting

A

Stubbornness of the calculus

36
Q

Cavitation

A
37
Q

Transverse orientation

A

Cross wise; lateral surface of th working end is adapted to the proximal surface starting from the outermost edge ( best for interproximal)

38
Q

Vertical orientation

A

Working end is positioned with the lateral surface against the tooth surface, tip down and moving vertically up and down (prob like) (best for pockets and deplaqueing)

39
Q

Why is it important to keep the tip of a powered instrument moving

A
40
Q

Tapping

A

Tip placed onto the calculus and start tapping down on the calculus

41
Q

Sweeping

A
42
Q

Ergonomics

A

Study of the workers and their occupational environment

43
Q

Ergonomic risks factors for a DH

A

-prolonged static postures
-repetitive movements
-Working in a confined space
-challenges with positioning yourself or the patient
-limitations with tools and equipment used

44
Q

Consequences of poor ergonomics

A

-fatigue
-Pain/discomfort
-illness/injury
-Missed days at work
-Errors
-Lower productivity
-Patient dissatisfaction

45
Q

2 most common causes for musculoskeletal disorders in the DH profession

A

-Cumulative trauma
-prolonged static posture

46
Q

Things that cause cumulative trauma

A

-Repetitive movements like scaling and polishing
- vibrations from the hand piece

47
Q

Static posture leads to ?

A

Muscular imbalances; problems with neck rotation to right or left side

48
Q

Carpal tunnel

A

Compression of the median nerve as it passes through the carpal tunnel; Caused by pinching and gripping activities with wrist bent; made worse with repetitive flex ion and extension activities at wrist

49
Q

Trigger finger

A

Forceful grip and repetitive motion irritates the tendon & sheaths, nodules form in the tendon causing warm, swelling, tenderness; pain occurs during movement that places tendons in tension; finger locks in a trigger position

50
Q

Cubical carpal tunnel syndrome

A

Prolonged use of the elbow while flexed or trauma from overuse can compress the ulnar nerve; pain, numbness, tingling, and impaired sensation in the little and ring fingers, side and back of the hand; loss of fine control, reduce finger grip strength

51
Q

What is the leading cause of occupational disability in the dental healthcare profession?

A

Lower back pain

52
Q

What is the best position for a dental hygienist to sit in?

A

Leg balanced sitting; allows for forward and upward posture to transfer the body support to the feet

53
Q

Angulation for correct seating

A

Hips- 100-120
Knee angle- 110-135
Forward seat title of 45-55 from horizontal
Opposing muscle groups balaced and curve in the lower back stays maintained

54
Q

What can a hygienist utilize to improve neck posture?

A

Magnification system like Loupes

55
Q

What type of seating can aid in better posture and back relief?

A
56
Q

What are some ways to prevent ergonomic injuries

A

-frequent breaks
-shorter breakers are preferable
-changes in positioning before feeling pain
-go back to neutral posture

57
Q

When are instruments sharpened ?

A
58
Q

What is done with the stone father it has been lubricated and used to sharpen instruments on the tray?

A
59
Q

What sharpening technique does SJVC utilize?

A
60
Q

What is the correct angulation of the stone for sharpening?

A
61
Q

What are the consequences of a dull instrument?

A
62
Q

Why dont we sharpen the face of the instrument?

A
63
Q

How do you reduce the occurrence of a wire edge?

A
64
Q

How do you reduce the occurrence of a wire edge?

A
65
Q

What is the Most important step in sharpening a gracey

A

Dental hygiene (20 decks)

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