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Operative > Instruments and Equipment > Flashcards

Instruments and Equipment Flashcards

1
Q

____ are used for removal and shaping of tooth structure; Essential aspects of restorative dentistry; Includes: Hand instruments◦Rotary instruments(handpieces)

A

Tools

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2
Q

Excavators and chisels are examples of ____ instruments

A

Cutting instruments

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3
Q

Amalgam condensers, mirrors, explorers, and probes are examples of _____ instruments

A

Non-cutting instruments

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4
Q

_____ of an instrument is the outermost area of the working part of non-cutting instrument

A

Face

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5
Q

_____ of an instrument is the outermost area of the working part of cutting instrument

A

Cutting edge

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6
Q

The working part of non-working instrument is called

A

Nib

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7
Q

The working part of working instrument is called

A

Blade

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8
Q

____ is the neck of the instrument that is often curved

A

Shank

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9
Q

_____ of instrument is angled to allow the cutting edge of the blade to be within the projected axis of the handle; allows force on blade without rotation

A

Shank

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10
Q

Chisels and ordinary hatchets are ____ bevels

A

Bi-bevels

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11
Q

Gingival margin trimmers are ____ bevels

A

Single bevels

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12
Q

To place bevels on the mesial cervical margin of the preparation

A

Mesial marginal trimmer

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13
Q

To place bevels on the distal cervical margin of the preparation

A

Distal marginal trimmer

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14
Q

The ___ number on the handle of an instrument denotes Width of blade in tenths of mm

A

First

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15
Q

The ___ number on the handle of an instrument When necessary, describes angle of CUTTING EDGE to instrument shaft in clockwise centigrade

A

Second

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16
Q

The ___ number on the handle of an instrument denotes Length of Blade in millimeters

A

Third

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17
Q

The ___ number on the handle of an instrument denotes Angle of blade relative to the long axis of the handle in clockwise centigrade

A

Fourth

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18
Q

_____ is measured from a line parallel to the long axis of the instrument handle in clockwise centrigrades. The angle is expressed as a percent of 360 degrees; not always present

A

Cutting edge angle◦

19
Q

What instruments place retention and sharpen line angles?

A

Ordinary Hatchets

20
Q

What instruments remove caries?

A

Spoon excavators

21
Q

___ are straight, slightly curved (Weldelstaedt), or bin-angle; plane walls of prep

A

Chisels

22
Q

____ cut enamel

A

Enamel hatchets

23
Q

____ bevel enamel at gingival

A

Gingival margin trimmers

24
Q

Amalgam condensers, composite and plastic instruments are ____ instruments

A

Condensing instruments

25
Q

_____ applies to all rotary cutting instruments that have bladed cutting heads◦Prepare enamel◦Adjust resin restorations◦Finish metal and resin restorations◦Laboratory Work◦Surgical Removal of Bone

A

bur

26
Q

33 1/2, 34, 37, and 39 are ____ burs

A

Inverted cones

27
Q

330-333 are ____ burs

A

Pear-shaped burs

28
Q

56, 57, 557 are ____ burs

A

Straight fissure

29
Q
  1. 170, and 171 are ____ burs
A

Tapered fissure

30
Q

____ burs are stiffer and stronger and steel; more brittle

A

Carbide burs

31
Q

____ burs have Higher hardness; Cutting effectiveness; Used for Intracoronal and extracoronal tooth preparations, Bevel enamel margins, and Enameloplasty

A

Diamond burs

32
Q

Can the electric handpiece be used for high and slow speed?

A

Yes

33
Q

_____ handpiece utilizes air-water spray for cooling, high operating speed (450,000 rpms for pneumatic and 200,000 rpms for electric), carbide or diamond burs; se light pressure

A

High-speed handpiece

34
Q

____ precautions include using light pressure, air water sprays and sharp burs

A

Pulpal Precautions

35
Q

____ precautions include using rubber dam, retract soft tissue with mirror and cotton roll

A

Soft tissue precautions

36
Q

___ grasp Palm away from operator, 3rd and 4th fingers rest on nearby tooth, Greatest sense of touch

A

Modified pen grasp

37
Q

____ grasp: Palm toward operator, Used mostly for tooth preparation from lingual, Usually on anterior teeth

A

Inverted pen grasp

38
Q

____ grasp: Similar to holding a knife while pairing an apple◦Power grasp◦Thumb rests on a nearby tooth to operating site

A

Palm-and-thumb grasp

39
Q

____ grasp: Power plus delicacy◦Rest thumb on same tooth that is being prepared or the adjacent tooth

A

Modified Palm-and-Thumb Grasp

40
Q

A process by which all forms of microbial life including bacteria, viruses, spores and fungi are completely destroyed

A

Sterilization

41
Q

____ Uses steam under pressure◦250 °F, 15 PSI, 20 mins*◦Shelves for cassettes

A

Autoclaving

42
Q

Oven-type sterilizer◦320 °F, 60 to 120 mins*

A

Dry heat

43
Q

Chemical vapor pressure◦Uses chemical solution in a pressurized chamber ◦270 °F, 20 to 40 PSI, 20 mins*◦Proper ventilation must be installed

A

Chemiclaving

44
Q

Several hours, below 100°C *◦Proper ventilation must be installed

A

Ethylene Oxide

Operative (12 decks)

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