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dental assisting mda > Clinical Dentistry - Instrument Identification > Flashcards

Clinical Dentistry - Instrument Identification Flashcards

1
Q

angle formers are used in a downward motion to -

A

form and define point angles, and sharpen line angles

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2
Q

the double working ends of an angle former are

A

angled cutting edge

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3
Q

a chisel is used to ____ enamel and dentin walls in prep

A

shape and plane

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4
Q

the blade of a chisel is ___

A

straight across

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5
Q

the instrument used to remove decay material and debris from the tooth, inverting dental dam and packing retraction cord is known as the

A

spoon excavator. shaped like a spoon

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6
Q

gingival margin trimmers are double ended to accommodate the __ and __

A

mesial and distal margins

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7
Q

gingival margin trimmers are used to

A

bevel the gingival margin wall of the prep

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8
Q

enamel hatchets are used to

A

refine prep walls and create retention

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9
Q

enamel hatchets have a straight edged tip that sits on a ___ angle

A

90 degree

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10
Q

hoes are used in a pulling motion (like a garden hoe) in order to shape the ____

A

floor of the cavity prep

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11
Q

cutting instruments are

A

angle formers, hoes, hatchets, gingival margin trimmers, chisels and excavators

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12
Q

what is the use of cutting instruments

A

design of prep, to refine and define the walls

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13
Q

how many cutting instruments are there

A

6

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14
Q

a basic kit consists of

A

explorer, mirror, aW tip, cotton pliers and possibly a probe

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15
Q

non cutting instruments are

A

basic exam instruments and instruments used to insert and finish restorations

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16
Q

a burnisher is a ___ instrument

A

non cutting

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17
Q

burnishes are used to smooth rough margins, squeeze out mercury and

A

shape metal matrix bands

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18
Q

burnishers come in a variety of shapes like …

A

beaver tail, football, tball and ball shape

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19
Q

which end of a amalgam carrier is used first in the filling process

A

the smallest end

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20
Q

what are the two common names for carvers

A

hollenback and cleiod-discoid

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21
Q

a mesial GMT angles toward the ___ and has a blacks number 4 of

A

midline, and 85-90

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22
Q

the blade of a hoe is ___ to the handle

A

perpendicular

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23
Q

the hollenback carver is used on the

A

interproximal areas

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24
Q

discoid-cleoid carvers are used on the __ surface

A

occlusal

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25
Q

carvers are to remove ___ and carve __

A

excess material and carve anatomy before hardening

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26
Q

T3 / tanner carver is similar to the discoid but has

A

larger ends

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27
Q

composite instruments are similar to PFI in regard to the use being

A

to carry, place, condense and carve composite materials

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28
Q

PFI typically is double ended with a

A

paddle and condensing end

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29
Q

finishing knives have a working end that is

A

a blade

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30
Q

non cutting instruments are aka ___ instruments

A

restorative

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31
Q

low / slow speed handpieces are __

A

short and straight

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32
Q

10,000 - 30,000 rpms are ___ handpieces

A

low speed

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33
Q

intraoral use of slow speed used the __ attachment

A

contraangle with latch type bur

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34
Q

when is it safe to clean the overhead light

A

when it’s fully cooled down

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35
Q

the central air compressor provides air for the ___

A

air water syringe and hand pieces

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36
Q

the central vacuum bc provides suction to the

A

ejector and HVE

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37
Q

supine position has the patients __ and __ at about the same level

A

head and knees

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38
Q

when working mandibularly the chin would be positioned

A

slightly down / normal head position

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39
Q

when working on the maxilla the chair is nearly parallel with the floor so that the chin can be

A

angled upward

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40
Q

what is ideal distance between patients face and operators

A

12-14 inches

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41
Q

light is positioned at a __ angle when working on the maxilla

A

45

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42
Q

when working on the mandible the light is at a __ angle

A

90 degree

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43
Q

class I motion is movement of the

A

fingers only

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44
Q

class II motion is movement of the

A

fingers and wrist only

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45
Q

class III motions is movement of the

A

fingers wrist and elbow

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46
Q

class IV motion is movement of

A

the entire arm and shoulder

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47
Q

enamel hatchet blade is ___ to the handle

A

parallel

48
Q

a right handed operators zone would be from __ to __ o clock

A

7-12

49
Q

a two handed transfer is appropriate when the item is

A

bulky or hinged

50
Q

single handed transfers are completed using the

A

last two fingers of the left hand

51
Q

which hand is kept free for auction only

A

the right hand

52
Q

when passing instruments they should be facing the

A

direction of use

53
Q

modified pen grasp is when

A

instrument is held as a pen with middle finger pad resting on top

54
Q

what is the mouth mirror used for

A

retraction, light reflection, indirect vision and trans illumination

55
Q

when fulcruming which finger is used as support

A

the ring finger

56
Q

working on tooth 1.5 , fulcruming occurs how far away, on what surface and in which arch?

A

1-4 teeth away, incisal edge and same arch

57
Q

what are the two types of oral evacuation

A

HVE, and saliva ejectors

58
Q

how is the HVE held to the tooth surface when suctioning

A

parallel to the surface, slightly distal

59
Q

3 types of isolation techniques

A

cotton rolls, dental dam, and dry angles

60
Q

3 types of dental dam frames

A

otsby frame, young frame, plastic U frame

61
Q

which dental dam frame is placed under the dam?

A

the plastic U shaped frame

62
Q

What size hole is used for the clamped/anchor tooth?

A

size 5 the largest

63
Q

the bow of the clamp is the

A

rounded portion that sits distally

64
Q

winged clamps are used to

A

hold the dam down better

65
Q

what clamp would you use for tooth 2.6 or 4.7

A

12A

66
Q

what clamp is used in posterior quadrants 1 and 3

A

13A

67
Q

2A clamps are used on all

A

premolars

68
Q

what is necessary to tie to clamp prior to any placement in the mouth

A

a ligature

69
Q

where do you place the ligature of a clamp

A

on the buccal side

70
Q

what can be used in place of clamps on anterior teeth

A

wedjets/stabilizing cords and or wedges

71
Q

the amount of wedges needed is determined by the

A

number of walls missing

72
Q

__ inch is left at the top and bottom of dental dam to ensure isolation

A

1 inch at top, 2 inch at bottom

73
Q

holes are punch in the dental dam with ___ space between

A

3.0 - 3.5 mm

74
Q

what instrument is used to start removal of dam

A

crown and bridge scissors

75
Q

the three number formula classify the ,,_

A

width, length, angle to long axis

76
Q

the four number formula classifies as ,,,

A

width, degree of cutting edge, length, angle to long axis

77
Q

Low speed handpieces has 3 attachments called

A

contraangle, prophyangle, and straight attachment

78
Q

the conta angle attachment uses a ___ bur

A

latch type

79
Q

the low speed handpiece operates at ___ rpm

A

10,000-30,000 rpm

80
Q

High speed handpieces require ___ to prevent frictional heat

A

water coming system

81
Q

the handpiece that operates at 450,000 rpm is the

A

high speed

82
Q

the laboratory handpiece operates at ___ rpm

A

20,000

83
Q

what kind of bur attachment is used for the high speed

A

friction grip

84
Q

how does the air abrasion handpiece work

A

it produces high pressure of aluminum oxide particles

85
Q

parts of a bur

A

head, neck, shank

86
Q

parts of a instrument

A

handle, shank, working end

87
Q

cutting burs are typically made of

A

tungsten carbide

88
Q

round burs come in sizes __

A

1/4 to 10

89
Q

which 4 burs are used for initial entry into prep

A

round, straight fissure plain cut, pear shaped and end cutting burs

90
Q

the tapered fissure burs (xcut and plain) are used to

A

provide angles to prep walls

91
Q

inverted cone burs are in the ___ size range

A

30s

92
Q

greenies are used to

A

polish amalgam

93
Q

brownies are used to

A

smooth amalgam

94
Q

what is used to final polish composite

A

cuttlebone

95
Q

abrasive disks attach onto a ___ then into the handpiece

A

mandrel

96
Q

Internal cavity walls ___ extend to the external surface

A

do not

97
Q

the axial wall of a prep runs ___ to the long axis

A

parallel

98
Q

the pulpal wall is ___ to long axis

A

perpendicular

99
Q

what is a line angle

A

an angle former by 2 walls or surfaces

100
Q

resistance form is when the

A

dentist determines shape and placement of walls for protection

101
Q

in the initial tooth prep the outline is when the

A

dentist determines the shape of prep needed

102
Q

retention form is to

A

prevent displacement or removal of restoration

103
Q

convenience form is for

A

easy access to prep

104
Q

direct veneers are applied __

A

chairside

105
Q

indirect veneers have to be made in a __

A

lab

106
Q

why are retention pins used, and what is placed on top of them

A

used in severe loss of structure, a core build up is place on top. 1 pin per cusp lost

107
Q

the inner knob of a matrix retainer is for

A

increasing the size

108
Q

the outer knob on a matrix retainer is for

A

tightening and loosening the band

109
Q

the screw/pin that hold the band in place is called the

A

spindle

110
Q

which way does the diagonal slot of a retainer face when placed

A

gingival

111
Q

the smaller circumference of the matrix band is placed on

A

the bottom toward gingiva

112
Q

when would it be appropriate to use a extension matrix band

A

when a cusp is missing

113
Q

for quadrants 1 and 3 the loop of the matrix band faces the

A

screw, to the right

114
Q

for quadrants 2 and 4 the matrix band loop faces the

A

tofflemire word, to the left

115
Q

why are wedges used with matrix systems

A

to adapt the band to the gingival surface and provide spacing

116
Q

what type of matrix system is used for anterior teeth

A

mylar/celluloid strips

dental assisting mda (35 decks)

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