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Therory And Practice > Instruments > Flashcards

Instruments Flashcards

1
Q

Extraoral fulcrum

A

Stabilization point outside of patients mouth (cheek chin)

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2
Q

Intraoral fulcrum

A

Stabilization point for the hand on tooth surface

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3
Q

Indirect vison

A

Use of mirror to view tooth surface or intraoral structure that cannot be seen directly (lingual surfaces)

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4
Q

Retraction

A

Use of mirror head to hold the patients cheek, lip or tongue to view tooth surfaces other wise hidden

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5
Q

Indirect illumination

A

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

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6
Q

Transillumination

A

Directing light off of the mirror and through the anterior teeth

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7
Q

Front surface mirror

A

Reflecting surface on front, clear image, good quality, scratched easy

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8
Q

Concave mirror

A

Reflecting surface on front, magnified image, distorts image, resist scratching

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9
Q

Plane (flat) mirror

A

Reflecting image is on back, produces double image

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10
Q

Rhodium surface mirror

A

Highly reflective, sharp images

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11
Q

Crystal/HD surface mirror

A

Layers of medal oxides for reflective material, more bright and accurate, expensive

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12
Q

Knurling pattern

A

Texture on handles - static friction - less pinch force

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13
Q

Balanced instrument

A

Working ends are aligned with handle (centre)

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14
Q

Simple shank

A

A shank that is bent in one plane

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15
Q

Complex shank

A

Bent in two planes

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16
Q

Tactile sensitivity

A

Ability to feel vibrations from working end to fingers on shank and handle

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17
Q

Functional shank

A

Allows working end to be adapted to the tooth (for roots and crowns)

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18
Q

Lower shank

A

section of functional chank nearest to the working end

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19
Q

Terminal shank

A

another term for lower shank

20
Q

extended lower shank

A

shank length that is 3mm linger than standard lower shank (for deep periodontal pockets)

21
Q

Unpaired working-ends

A

Double ended instrument with dissimilar ends - example: one end is a curet and the other is a sickle scaler

22
Q

Paired working-ends

A

Double ended instrument with exact mirror imaged ends - example both ends are a curet

23
Q

Design name

A

Identifies the school or individual originality responsible for the design or development of an instrument or group of instrument

24
Q

Design Number

A

A number designated that when combined with the name provides an exact identification of working end example Gracey-11

25
Q

Face

A

Concave surface of the working end

26
Q

Back

A

Convex side (opposite to the face) of the working end

27
Q

Lateral surfaces

A

Surface of the working end on either side of the face (similar to back)

28
Q

Cutting edge

A

Sharp area formed where lateral surface meets the face surface (edges)

29
Q

Toe of working end

A

Rounded end of working end (where cutting surfaces meet

30
Q

Tip of working-end

A

Sharp tip of working end (where cutting surfaces end)

31
Q

Cross section

A

a cut through something at an angle perpendicular to its ling axis in order to view its interior structure (toe - looks like jujube, tip looks like triangle

32
Q

Clarifications - instruments

A

assessment instruments and calculus removal instruments

33
Q

periodontal probe

A

Blunt, rod-shaped working ends (circular or rectangular cross sections) - used to evaluate health of tissues

34
Q

explorer

A

Flexible shanks (circular in cross section) used to locate calculus deposits, tooth surface irregularities, and margins

35
Q

Supragingival instrumentation

A

Use of instrument coronal to above the gingival margin

36
Q

Subgingival instrumentation

A

Use of instrument apical to below gingival margin

37
Q

Supragingival deposits

A

Calculus above gingival margin (visible)

38
Q

Subgingival calculus deposits

A

Calculus below gingival margin (not detected visually)

39
Q

adaptation

A

First 1 or 2 mm if the working ends lateral surface in contact with the tooth

40
Q

Function of a probe

A

Detecting and measuring periodontal pockets, health status, attachment loss, bleeding

41
Q

Williams probe

A

Standard, mm groves at 1 - 10 mm (skipping 4 & 6)

42
Q

WHO probe

A

Ball-end of 0.5 mm. Markings at 3.5, 5.5, 8.5 and 11.5

43
Q

Nabers function probe

A

No markings, curved pig tail (slips between roots)

44
Q

6 zones of tooth

A

Destofacial, facial, mesiofacial, distolingual, lingual, mesiolingual

45
Q

Probing technique

A

15 grams of pressure, modified pen grasp, 6 readings, walking stroke (1-3mm up and down)

Therory And Practice (8 decks)

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