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Operative 1 > Dental Instruments > Flashcards

Dental Instruments Flashcards

1
Q

what are types of hand instruments?

A
  • cutting
  • non-cutting
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2
Q

What are the tools we have for dentistry?

A
  • Hand instruments
  • rotary instruments
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3
Q

non-cutting tools

A
  • amalagm condensers
  • mirrors
  • explorers
  • probes
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4
Q

cutting tools

A
  • excavators
  • chisels
  • ect
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5
Q

what is this

A

nib

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6
Q

the shank is ________ to allow the cutting edge of the blade
to be within the projected axis of the handle

A

angled

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7
Q

double handed instruments are

A

more effiecent

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8
Q

single ended instruments are

A

safer

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9
Q
A

know picture

triple has 3 bends bin has two bends …..

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10
Q

bi-bevels

A
  • chisels
  • ordinary hatchet
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11
Q

single bevels

A

gingival margin trimmer

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12
Q

Formulas

A
  1. width
  2. cutting edge (clockwise centigrade)
  3. blade length (mm)
  4. blade angle (clockwise centigrade)

W Ca BL Ba

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13
Q

Cutting edge angle is

A

NOT present all of the time

expressed as a percent of 360 degree

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14
Q

with the mirror

A

always have in non-dominant hand

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15
Q

What hand instruments do we use for a prep?

A
  • MIRROR
  • explorer
  • perio probe (lab only)
  • spoon excavator (CLINIC only)
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16
Q

Explorer

A

◦ Feel for caries (clinic)
◦ Feel for smoothness, sufficient interproximal clearance (lab)

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17
Q

what do we use for an amalgam restoration

A
  • MIRROR
  • amalgam carrier
  • condensers
  • burnishers
  • carvers

in clinic :articularing paper holder

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18
Q

what do we use for a composite restoration?

A
  • MIRROR
  • composite gun
  • condensers
  • burnishers
  • hollenback
  • optrasculpt
  • curing light
  • articulating paper (clinic)
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19
Q

what are thing we use for a class 2 restoration?

A
  • Shepherd’s hook explorer
  • Matrix band
    ◦ Tofflemire + band for amalgam
    ◦ Sectional (Palodent Plus) for composite
  • Forceps
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20
Q

What hand instruments do we use sometimes in restorations?

A

dycal instrument and spatula

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21
Q

instrument classification type

A
  • purpose
  • positon of use
  • working end
  • shape of shank
  • comnination
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22
Q

hatchets

A
  • sharpen line angles
  • place retention

cutting

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23
Q

spoons

A

remove caries

cutting

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24
Q

gingival margin trimmers

A
  • mesial and distal
  • bevel enamel at the gingival

cutting

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25
Q

enamel hatchet

A

cut enamel

cutting

26
Q

chiesls

A
  • Straight, slightly curved (Wedelstaedt), or bin-angle
  • chisel- plane walls of prep

cutting

27
Q

Condensing Instruments

A
  • Amalgam condensers,
  • composite instruments
  • plastic instruments
28
Q

what are the types of Rotary Instruments

A

friction grip
latch-type grip

29
Q

bur

A
  • applies to all rotary cutting instruments that
    have bladed cutting heads
30
Q

burs can be used to

A

◦ Prepare enamel
◦ Adjust resin restorations
◦ Finish metal and resin restorations
◦ Laboratory Work
◦ Surgical Removal of Bone (not in operative)

31
Q

We use ________ burs at UMKC

A

Carbide

cheaper than diamond

32
Q

330 bur

A

pear shaped

33
Q

169 bur

A

inverted cone

34
Q

56 bur

A

straight fissure

35
Q

245 bur

A

larger pear shape

36
Q

Carbide burs

A

stiffer and stronger than steel

37
Q

bur classification

A

In the US, arbitrary numerical code for head size and shape

38
Q

dimond bur

A
  • Higher hardness
  • Cutting effectiveness
39
Q

dimond bur used for

A

o Intracoronal and extracoronal tooth
preparations
o Bevel enamel margins
o Enameloplasty

40
Q

which are better for cutting?

A

diamond

41
Q

Our ELECTRIC HANDPIECE CAN BE

****

A

high or slow speed

42
Q

high-speed hand piece

A
  • Pneumatic
  • Electric
43
Q

Max rpm for pneumatic

A

450,000

44
Q

Max rpm for electric

A

200,000

45
Q

Slow speed rpm

A

20,000 to 40,000

46
Q

Pulpal Precautions for handpieces

A
  • Light pressure
  • air-water (sprays and sharp burs)
47
Q

Soft Tissue Precautions for hand pieces

A
  • Rubber dam
  • retract soft tissue (mirror & cotton roll)
48
Q

Prevent Hazards with Cutting Instrument

A

eye precautions
inhalation
ear(optional)

49
Q

Modified pen grasp

A

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

50
Q

Inverted pen grasp

A

◦ Palm toward operator
◦ Used mostly for tooth
preparation from lingual

Usually on anterior teeth

51
Q

Palm-and-thumb grasp

A

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

52
Q

Modified Palm-and-Thumb Grasp

A

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

53
Q

sharpen at

***

A

first sight of dullness

**

54
Q

Dull instruments result in

A

◦ More pressure needed
◦ More pain
◦ Less control
◦ Takes longer
◦ Reduces quality

55
Q

what is the order for sharpening

A

CLEAN and Sterilize
sharpen
re-sterilize

56
Q

what are the four acceptable methods of sterilization?

A

◦ Autoclave
◦ Dry heat
◦ Chemiclave
◦ Ethylene oxide

57
Q

Autoclave

A

uses steam under pressure

58
Q

Autoclave numbers

A

250 degrees
15 PSI
20 mins

59
Q

Dry heat

A
  • oven-type
  • 120 mins
60
Q

chemiclave

A
  • chemical vapor pressure
  • 20 mins
  • need proper ventilation
61
Q

ethylene oxide

A

*need proper ventilation
* several hours
* below 100 degrees

62
Q

protect instruments

A
  • add rust inhibitors
  • have free of blood and debris

Operative 1 (15 decks)

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