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DHG 130 > Exam 2 CH 39 Instruments and Principles for Instrumentation > Flashcards

Exam 2 CH 39 Instruments and Principles for Instrumentation Flashcards

1
Q

Sequence of instruments for treatment?

A
  1. 11/12 Explorer
  2. Ultrasonic
  3. Scaler
  4. Universal Curet
  5. Area Specific/ Gracey (Used for fine scaling/root planning)
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2
Q

Types of strokes by direction?

A
  1. Diagonal or Oblique
  2. Vertical
  3. Horizontal
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3
Q

Why do we not use a fulcrum on mobile teeth?

A

Because you do not have stability on mobile teeth and can cause further damage to an already weaken periodontium.

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4
Q

What instruments are used for an examination?

A

Probe, Explorer, and mirror

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5
Q

What instruments are used for treatment?

A

Curets and Scalers

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6
Q

Term; Relationship between the working end of an instrument and the tooth surface being treated?

A

Adaptation

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7
Q

Term; A curved , rounded dental instrument utilized for scaling, root planning, and gingival curettage?

A

Curet

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8
Q

Term; A specialized instrument designed with specific angles in the shank for adaptation to a certain group of tooth structures?

A

Area-Specific Curet

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9
Q

Term; A curet designed for use on any tooth surface where the adaptation, angulation and other principles of instrumentation can be correctly and effectively accomplished?

A

A Universal Curet

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10
Q

Term; For an intraoral rest, the place on a tooth or teeth where the third or ring finger of the hand holding the instrument is placed to provide stabilization and control during activation of the instrument?

A

Finger Rest

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11
Q

Term; Use of a dental mouth mirror to view the area of instrumentation. Indirect lighting is provided by the mirror?

A

Indirect vision

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12
Q

Term; The minimal pressure that is required of an instrument against the tooth to accomplish the objective of the assessment or treatment?

A

Lateral Pressure

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13
Q

Term; The blade of an area-specific gracey curet in which the lower shank is at 70 degree angle to the face of the blade; contrasts with a universal curet blade, which is at a 90 degree angle with the lower shank

A

Offset Blade

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14
Q

Term; Instrument designed for initial removal of calculus, prior to finishing with a curet?

A

Scaler

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15
Q

Term; The part of the shank next to the blade?

A

Lower or terminal Shank

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16
Q

Parts of an instrument?

A

Working End, Shank and Handle

17
Q

Why do is Hollow handles preferred compared to solid handles?

A

Because they have enhanced tactile sensitivity and lessen fatigue

18
Q

Surface texture; Handles may be smooth, ribbed, or knurled is called?

A

Serrations

19
Q

T/F Serrations are for control and comfort without muscle fatigue, a smooth handle is avoided

A

True

20
Q

What type of handle do you want?

A

Serrated Hollow instrument

21
Q

T/F Straight shanks are used for Anterior(unrestricted) and Angled shanks are used for Posterior (restricted)

A

True

22
Q

T/F In general, the more restricted the tooth access, the more angled the shank is used

A

True

23
Q

T/F Heavier shanks are stronger and able to withstand greater pressure without flexing. They are needed for heavier calculus removal.

A

True

24
Q

T/F Less rigid, more flexible shanks provide more tactile sensitivity and are used to remove fine deposits

A

True

25
Q

T/F A finger rest is ALWAYS used when instruments are applied to the teeth and gingiva.

A

True

26
Q

What does adaption of a gracey give you?

A

Gives you access to get into a pocket better.

Longer shank, Shorter blade

27
Q

What is the modified pen grasp?

A

A three finger grasp with a specific target points of the thumb, index finger and middle finger all in contact with the instrument.

28
Q

How much of the blade is used during instrumentation?

A

1/3 or last 3mm of blade

29
Q

On a unviersal curet, the face of the blade is at what _______degree to the______?

A

90

lower shank

30
Q

Area specific/ Gracey curets are what angle to the lower shank?

A

70

31
Q

What are the objectives of a Finger Rest?

A
  1. Stability
  2. Unit Control
  3. Prevention of injury
  4. Comfort for the pt
  5. Control of length stroke
32
Q

What are the four diameter handles available?

A

3/8
5/16
1/4
3/16

33
Q

What is separable from the shank and working end. They permit instrument exchanges and replacements?

A

Cone socket

34
Q

T/F Principles for instrument use; Stability is essential for effective, controlled action of an instrument

A

True

35
Q

What are the causes of carpal tunnel?

A

Brought on by pressure on the median nerve in the carpal tunnel, is one of the nerve entrapment conditions that results from inappropriate work habits, such as working with a bent wrist

36
Q

What is the working end of an instrument?

A

The part used to carry out the purpose and function of the instrument.

Each working end is unique to the particular instrument.

The working end of a scaler or curet is the BLADE.

37
Q

What are problem areas for adaptation?

A
  • Line angles
  • convex and rounded surfaces (narrow roots)
  • Cervical Area (root is constricted)
  • Proximal root surfaces (concave, longitudinal grooves)
38
Q

Form the back of the instrument?

A

Lateral surface

DHG 130 (16 decks)

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