Instruments

Question 1

Straight probe

Answer 1

Clinical examinations of restorations, restoration margins and exposed carious dentine

Question 2

Briault probe

Answer 2

Examination of interproximal surfaces and internal cavity walls
3 corners

Question 3

William’s probe

Answer 3

Periodontal pocket depths and clinical examination of tooth surfaces
mm increments with 4 and 6 missing

Question 4

UNC probe

Answer 4

Measuring periodontal pocket depths
Preferred to William’s probe
mm increments with 4-5, 9-10, 14-15 blocked

Question 5

Naber’s probe

Answer 5

Measuring periodontal furcation involvement

Fish hook

Question 6

Scalers

Answer 6

To remove supra/ subgingival calculus deposits

Question 7

WHO probe

Answer 7

To walk around gingival sulcus and measure periodontal pocket depths
3.5-5.5mm blocked, 8.5 and 11.5mm points

Question 8

Chisels

Answer 8

To remove unsupported enamel and bevel cavity margins

Question 9

Hatchet/ hoe

Answer 9

To remove unsupported enamel and bevel cavity margins

Question 10

Excavators

Answer 10

To remove caries and soft temporary restorations

Can be used to shape plastic materials

Question 11

Marginal trimmers

Answer 11

To remove unsupported enamel and bevel cavity margins

Question 12

Amalgam packer

Answer 12

Packing plastic or amalgam restorations into cavities

Question 13

Carvers

Answer 13

For cutting/ carving shape of final restorations

Question 14

Flat plastics

Answer 14

For conveying, placing and shaping plastic materials

Question 15

Burnishers

Answer 15

To finish and polish amalgams and to place and shape composite fillings before setting

Question 16

Spatula

Answer 16

Used for mixing materials e.g. Kalzinol

Question 17

Slow speed handpiece

Answer 17

Bigger
Latch grip burs
Contra angle
Air driven motor and handpiece

Question 18

High speed

Answer 18

Smaller and thinner
Friction grip burs
Used for cutting sound enamel or dentine and removing existing restorations

Question 19

Diamond grip burs

Answer 19

Pear shaped
Round
Straight
Tapered

Question 20

Rose head bur

Answer 20

Slow speed hand piece
For removing soft carious dentine during caries removal
Tungsten carbide

Question 21

Greenies and brownies

Answer 21

Polishing/ finishing amalgam

Latch grip for slow speed handpiece

Question 22

Finishing burs

Answer 22

Round/ flame shaped/ tapered: amalgam

Finishing microfine diamonds (with yellow band)/ soflex disc/ polishing strips: composite

Question 23

Matrix band

Answer 23

To substitute for a missing wall and recreate a contact point in a 2 surface cavity

Question 24

Young’s frame

Answer 24

Rubber dam frame

Question 25

What are most instruments made out of

Answer 25

Medical grade stainless steel or carbon steel

Tungsten carbide sometimes brazed to cutting edges of instruments for increased longevity of sharpness