Dental instruments

Question 1

Which instruments are found in an exam kit?

Answer 1

mirror, probe no.6, probe PCP 12, probe CPITN, college tweezers

Question 2

What is the cons(ervative)/restorative kit used for?

Answer 2

direct/indirect restorations and root canal treatment

Question 3

What are the bare essential instruments required for exam?

Answer 3

mirror, probe no.6, college tweezers

Question 4

Which probe is used as a screening tool for periodontal disease?

Answer 4

WHO BPE probe / CPITN

Question 5

Describe a WHO BPE / CPITN probe

Answer 5

0.5mm diameter sphere tip, markings up to 3.5, 5.5, 8.5 and 11.5mm

Question 6

Describe a PCP 12 probe?

Answer 6

marking of increments of 3mm up to 12mm (4x3mm bands)

Question 7

Which probe is used for a periodontal chart?

Answer 7

PCP 15mm UNC probe (university of North Carolina)

Question 8

Describe a PCPUNC probe

Answer 8

1mm increments in 5mm groups up to 15mm

Question 9

What are the 2 types of tweezers?

Answer 9

college tweezers and locking tweezers

Question 10

Which instrument is used to remove soft caries?

Answer 10

spoon excavator

Question 11

Which instrument is used to remove lots of caries?

Answer 11

large excavator

Question 12

Which equipment is needed to recreate a tooth wall?

Answer 12

matrix band (posterior teeth) or cellulose matrix strip (anterior teeth)

Question 13

What is the advantage of using a cellulose matrix strip?

Answer 13

it is clear so curing light can pass through

Question 14

What is an orange matrix band?

Answer 14

a much thinner matrix band

Question 15

Example of a lining material

Answer 15

calcium hydroxide

Question 16

What is the purpose of a lining material?

Answer 16

acts as a sealer / thermal insulator which protects the pulp especially if the cavity is deep. Increases longevity of restoration.

Question 17

Which instrument is used to place lining material in a cavity?

Answer 17

calcium hydroxide applicator

Question 18

Appearance of calcium hydroxide applicator

Answer 18

rounded/sphere tip

Question 19

Which instrument is used to manipulate restorative material before it sets?

Answer 19

flat plastic

Question 20

Which instrument can be used as a burnisher?

Answer 20

plugger

Question 21

What is a burnisher?

Answer 21

instrument used to contour / smooth surface of restoration

Question 22

What is the main use of a plugger (not burnishing)?

Answer 22

to firmly pack amalgam into cavity which requires lots of force.

Question 23

Why does a plugger have two ends?

Answer 23

to plug amalgam into different areas of the cavity

Question 24

Which instrument can be used to contour fissures into the restoration?

Answer 24

Wards carver

Question 25

What drives a high speed handpiece?

Answer 25

air turbine

Question 26

What drives a slow speed handpiece?

Answer 26

motor

Question 27

How fast does a high speed revolve?

Answer 27

250-400 000 RPM

Question 28

Use of a high speed (turbine) handpiece

Answer 28

cutting into enamel or filling material

Question 29

Which burs are used with high speed handpieces?

Answer 29

diamond fissure bur, diamond round bur, diamond composite finishing burs? (flame and rugby ball). smooth grip

Question 30

How fast does a slow speed (motor) handpiece revolve?

Answer 30

20-40 000 RPM

Question 31

Function of slow speed (motor) handpiece

Answer 31

removing caries and polishing restoration

Question 32

What ratio of motor to bur turns does a slow speed (motor) handpiece have?

Answer 32

1:1 ratio (one motor turn leads to one bur turn)

Question 33

Which specialty uses a speed-reducing handpiece?

Answer 33

endodontics

Question 34

What is the ratio of a speed-reducing handpiece?

Answer 34

6:1 (6 motor turns for 1 bur turn)

Question 35

Which burs are used with slow speed handpieces?

Answer 35

rosehead burs (sizes 1/2 - 10), soflex polishing/finishing disks. both have latched grip

Question 36

Function of slow-speed rosehead burs

Answer 36

removes decay and dentine

Question 37

Function of diamond composite finishing burs

Answer 37

shaping resin based materials

Question 38

Function of soflex polishing/finishing discs

Answer 38

finishing resin based materials

Question 39

What is used to attach Soflex discs to slow speed motor handpiece?

Answer 39

mandrel

Question 40

What can be used interdentally for finishing restoration?

Answer 40

interproximal finishing strips (have coarse and fine ends)

Question 41

What is used to check that occlusion is unaffected by restoration?

Answer 41

articulating paper