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Direct/Cariology > Instrumentation > Flashcards

Instrumentation Flashcards

1
Q

What are the two types of tooth cutting instruments

A

-Hand and rotary instruments

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2
Q

What are hand instruments used for

A

to cut, plan, and cleave tooth structure

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3
Q

How many series are there in the UBSDM internal system

A

3 (A,B,C series)

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4
Q

A series instruments are used to..

A

cut and shape tooth structure and includes hatchets, hoes, chisels, and spoon excavators (caries removal)

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5
Q

B series instruments are used to

A

place restorative materials (i.e amalgam condensors and plastic instruments)

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6
Q

C series instruments are used to…

A

shape and finish restorative materials (i.e holdback covers, cleoid discoids, and other carvers)

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7
Q

Blacks classification systems for instruments is based on…

A

size and configuration of instrument

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8
Q

What is the primary cutting edge of an instrument

A

primary working surface of the instrument

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9
Q

The primary cutting edge can be either __ or __ beveled

A

mono or bi

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10
Q

What is the shank

A

connects the blade to the handle

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11
Q

Can a blonde have a secondary cutting edge

A

yes

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12
Q

How many numbers (digits) are there is Blacks instrument classification system

A

3

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13
Q

What does each digit in the Blacks Classification system mean

A
  • 1st digit= Width of blade in 10th of a millimeter
  • 2nd digit= Length of blade in mm
  • 3rd digit=Angle of the long axis of blade with handle in degrees centigrade
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14
Q

If the first digits in Blacks classification system is 15 what does this means

A

the width of the blade is 1.5 mm

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15
Q

90 degrees is how many degrees centigrade

A

25

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16
Q

270 degrees is how many degrees centigrade

A

75

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17
Q

0 degrees is how many degrees centigrade

A

0

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18
Q

Blacks classification system also has a 4 number formula, what digits in this new classification system are the same as the 3 digits system

A

the 1st remains the same

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19
Q

What digit in the 3 digit Blacks classification system comes the 3rd digit in the 4 digit system

A

2nd digit

20
Q

The 2nd digit in the Blacks classification system with 4 digits represent

A

2nd= Angle of the cutting edge of the blade with the handle in degrees centigrade

21
Q

The 4th digit represents

A

angle of long axis of blade with handle in degrees centigrade (Same as the 2nd digit in the 3 digits system)

22
Q

Is the drill the same as the bur

A

no

23
Q

A bur is __ cutting verses a drill which is __ cutting

A

side… end

24
Q

Multibladded rotary instruments are more effective at __ cutting verses __ cutting

A

die… end

25
Q

A bur is a __ instrument

A

multibladded rotary instrument

26
Q

(T/F) burs cut in one direction only

A

t

27
Q

How are burs classified

A

shape and diameter of the cutting edge of the bur

28
Q

What are the two parts of the bur

A

head and shaft

29
Q

How is the head of the bur classified

A

shape and diameter

30
Q

What is the function of the shaft of the bur

A

adapts the head to the handpiece

31
Q

Straight fissure bur is (single/multipurpose)

A

multipurpose

32
Q

What is the straight fissure bur numbered

A

55.5-60

33
Q

The straight fissure bur is a __ sided bur

A

parallel

34
Q

Cross cut bur is similar to…

A

straight fissure bur

35
Q

What are the differences between a cross cut bur and a straight fissure bur is that the cross cut burs have __ on the blades

A

notches (or flutes)

36
Q

Cross cut straight burs are numbered

A

556-560

37
Q

How are cross cut straight burs not as necessary today

A

because there are flutes on the blades which are not as necessary because of high speed handpeices

38
Q

What is the numbering for an inverted cone bur

A

33.5-40

39
Q

What is an inverted cone bur used for?

A

Develops retentive features, smooth walls and sharpen angle of cavity prep

40
Q

In inverted cone burs the side of the bur (Diverge/converge/are parallel) towards the shank

A

converge

41
Q

The tapered fissure bur is numbered

A

168-171

42
Q

A tapered fissure bur is used for

A

initial stages of cavity preparation and tapered wall forms

43
Q

Describe the shape of the tapered fissure bur

A

Sides of the bur converge towards the end of the bur

44
Q

What is the number for a round bur

A

1/16 - 11

45
Q

Purpose of the round bur is to

A

develop retentive features and remove caries

46
Q

There are notes on this reading in my notebook

A

ok

Direct/Cariology (20 decks)

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