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Fundamentals of DH Care > Parts of the Instrument, Grasp, Fulcrum, Use of the Mirror, Instrument Design and Classification > Flashcards

Parts of the Instrument, Grasp, Fulcrum, Use of the Mirror, Instrument Design and Classification Flashcards

1
Q

What is knurling?

A

Texture on handle of instruments for better grip

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2
Q

What is an unpaired instrument?

A

When the working ends on either side of the instrument are different (not mirrored)

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3
Q

Explain instrument balance

A

the center of the working end is level with the center of the handle

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4
Q

Shank

A

Located between the handle and the working end. It increases the length of the instrument so that the working end can be correctly positioned on the tooth/root

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5
Q

Where is a simple shank used?

A

On anterior teeth

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6
Q

Where is a complex shank used?

A

Posterior teeth

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7
Q

What is supra?

A

Above the gingiva

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8
Q

What is sub?

A

Below/under the gingiva

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9
Q

Where would you use a short shank instrument?

A

Supra-gingival

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10
Q

Where would you use a complex shank with a short functional end?

A

Supra-gingival on the posterior teeth

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11
Q

Where would you use a simple shank with an extended functional end?

A

Sub-gingival on the anterior teeth

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12
Q

Where would you use a simple shank with a short functional length?

A

Supra-gingival on the anterior teeth

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13
Q

Where would you use a complex shank with an extended functional end?

A

Sub-gingival on posterior teeth

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14
Q

What would you use a flexible shank for?

A

Assessments, light calculus, tactile sensitivity.

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15
Q

What would you use a rigid shank for?

A

Calcified deposit and stain removal

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16
Q

What is the cutting edge of the instrument?

A

The lateral surface and the face create the cutting edge

This is the surface that you will use to scrape and remove debris

17
Q

What is a toe and what instruments have this?

A

The toe is a rounded working end. Curets have this end

18
Q

What instruments have a “tip”

A

Sickles (only supra until more experienced)

19
Q

What instruments are for assessments?

A

Periodontal probes and explorers

20
Q

Which instruments are for calculus removal?

A

Sickle scalers, curets, periodontal files, chisel, and hoes

21
Q

What are the two sections of the instrument shank?

A

Functional (whole shank) and terminal (just the small part before the working end)

22
Q

What would you use the periodontal probe for?

A

Measuring pockets or lesions

23
Q

What is the recommended grasp?

A

Modified pen grasp

24
Q

What is the purpose of the modified pen grasp?

A

Allows precise control of the working end, wide range of movement, and tactile skill

25
Q

What are the functions of the fulcrum finger?

A

Serves as a support beam, enables hand & instrument to move as a unit, and allows for precise control of stroke pressure and length

26
Q

What is a same arch fulcrum?

A

When you place the fulcrum finger on the occlusal/incisal surface near the tooth being instrumented

27
Q

What is opposite arch fulcrum?

A

Fulcrum on one arch and instrument on the opposite

28
Q

What are the 3 types of dental mirror surfaces?

A

Front surface, concave, and plane/flat surface

29
Q

What is a front surface mirror?

A

Reflecting surface, most commonly used, scratches easily

30
Q

What is a concave surface mirror?

A

Produced distorted magnified image

31
Q

What is a plane/flat surface mirror?

A

Produced double image, reflecting surface on back of lens

32
Q

What is indirect vision?

A

using the mirror to view a tooth/surface that cannot be seen directly

33
Q

What is retraction?

A

Using the mirror head to hold the patient’s cheek, tongue, lips to the clinician can get a better view

34
Q

What is direct illumination?

A

Using the mirror to reflect light onto a tooth surface in a dark area of the mouth

35
Q

What is transillumination?

A

Directing light off of the mirror and through the anterior teeth. Another way to see incipient lesions in the tooth

36
Q

When do you use the modified pen grasp with the mirror?

A

For retraction of the tongue and cheeks

37
Q

When do you use the palm grasp with the mirror?

A

For retracting the upper and lower lips to see the labial/facial surfaces

Fundamentals of DH Care (13 decks)

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