Dental Surgery Licensure Exam preparation SET 2

Q1

Which temperature range is mandated for vaccine storage under NHPC cold chain management protocols?

A

2-6°C for all vaccine types

B

15-30°C for most pharmaceutical preparations

C

4-8°C for vaccines, 20-25°C for general medicines

D

20-25°C is considered adequate for heat-sensitive medications

Q2

The setting reaction of gypsum products is:

A

Acid-base reaction

B

Hydration of calcium sulfate hemihydrate

C

Polymerization

D

Oxidation reaction

Q3

Type IV dental stone is used for:

A

Study models

B

Dies and casts requiring high strength

C

Mounting models

D

Articulation

Q4

The most commonly used impression material in Nepal dental clinics is:

A

Polyether

B

Alginate (irreversible hydrocolloid)

C

Silicone

D

Polysulfide

Q5

The compressive strength of dental amalgam is:

A

Lower than composite

B

Higher than composite

C

Same as composite

D

Zero

Q6

The setting expansion of Type III stone is:

A

0.06-0.10%

B

0.30-0.50%

C

0.80-1.00%

D

2.00%

Q7

Zinc phosphate cement is used for:

A

Permanent cementation of crowns only

B

Temporary cementation only

C

Luting and base material

D

Impression material

Q8

The water-powder ratio affects:

A

Only the color of the stone

B

Strength and porosity of the gypsum product

C

Setting time only

D

No effect

Q9

Alginate impression material should be poured within:

A

24 hours

B

1 hour ideally

C

1 week

D

Never needs pouring

Q10

Dental composite resin polymerization is initiated by:

A

Catalyst only

B

Light activation or chemical activation

C

Heat only

D

Pressure only

Q11

The particle size of nanofill composite is:

A

5-50 micrometers

B

0.005-0.01 micrometers

C

1-5 micrometers

D

50-100 micrometers

Q12

The most common cause of failure of dental restorations in Nepal is:

A

Material fracture

B

Secondary caries

C

Patient dissatisfaction

D

Allergic reaction

Q13

GIC (Glass Ionomer Cement) bonds to tooth structure by:

A

Mechanical retention only

B

Chemical bond to calcium in tooth structure

C

No bonding

D

Micromechanical interlocking only

Q14

The fluoride release from GIC is beneficial because:

A

It strengthens enamel only

B

It has antimicrobial and anticariogenic effect

C

It causes staining

D

No benefit

Q15

Wax distortion in impression is minimized by:

A

Keeping at room temperature

B

Dipping in cool water after heating (boxing)

C

Heating multiple times

D

Using thin layers only

Q16

The Brinell hardness of enamel is approximately:

A

50

B

300-350

C

700

D

1000

Q17

The mixing time for zinc phosphate cement affects:

A

Only the color

B

Film thickness and working time

C

No effect on the cement

D

Only setting time

Q18

Auto-polymerizing acrylic resin is used in Nepal for:

A

Only denture bases

B

Temporary crowns, denture repairs, and splints

C

Only impressions

D

Only cast fabrication

Q19

Copper band impressions in Nepal are used for:

A

Full arch impressions

B

Individual tooth preparation impressions

C

Bite registration

D

Facebow transfer

Q20

The setting time of alginate is affected by:

A

Only water temperature

B

Water temperature, mixing time, and powder measurement

C

Only powder amount

D

Room humidity only

Q21

Dental porcelain is primarily composed of:

A

Silica, feldspar, and quartz

B

Zinc oxide and eugenol

C

Calcium sulfate

D

Poly methyl methacrylate

Q22

The coefficient of thermal expansion of acrylic resin is:

A

Similar to tooth structure

B

Much higher than tooth structure

C

Lower than tooth structure

D

Same as metal

Q23

Zinc oxide eugenol impression paste is used for:

A

Edentulous impressions

B

Bite registration in surgery

C

Full arch impressions

D

All of the above

Q24

The elastic recovery of alginate after removal from mouth is:

A

100%

B

95-98%

C

70-80%

D

50%

Q25

The fusing temperature of inlay wax is approximately:

A

40 degrees Celsius

B

60-70 degrees Celsius

C

100 degrees Celsius

D

200 degrees Celsius

Q26

PJC (Porcelain Jacket Crown) in Nepal is:

A

Commonly used for anterior teeth

B

Never used

C

Only for posterior teeth

D

Only for children

Q27

The most common cavity liner used in Nepal is:

A

Zinc phosphate cement

B

Calcium hydroxide liner

C

GIC base

D

Cavity varnish

Q28

Model print materials (die spacers) are used to:

A

Increase crown retention

B

Create space for cement between die and crown

C

Strengthen the die

D

Prevent fracture

Q29

The pouring temperature for dental stone should be:

A

Boiling water

B

Room temperature water or as per manufacturers instructions

C

Freezing temperature

D

Any temperature

Q30

Dental stone expansion can be compensated by:

A

Adding more water

B

Using expansion liquid or double-mix technique

C

Using less powder

D

Heating the model

Q31

The resiliency of impression compound is:

A

High

B

Low

C

Moderate

D

Non-existent

Q32

In Nepal dental clinics, the most commonly used restorative material for primary teeth is:

A

Amalgam

B

GIC or composite

C

Gold

D

Porcelain

Q33

Dental amalgam contains mercury in approximately:

A

30%

B

50%

C

70%

D

90%

Q34

Silicone impression material has the highest:

A

Tear strength

B

Elastic recovery and dimensional accuracy

C

Flow

D

Setting expansion

Q35

The kneading property of impression compound is achieved by:

A

Heating in water bath

B

Heating over flame and kneading

C

Room temperature manipulation

D

No kneading required

Q36

The celluloid strip matrix is used for:

A

Posterior restorations

B

Anterior proximal surface restoration

C

Crown preparation

D

Impression

Q37

The most important property of luting cement is:

A

High compressive strength

B

Low film thickness

C

High tensile strength

D

Elasticity

Q38

Dental rubber base impression material is:

A

Irreversible hydrocolloid

B

Polysulfide polymer

C

Alginate

D

Wax

Q39

The compressive strength of Type III dental stone is approximately:

A

5 MPa

B

30-40 MPa

C

100 MPa

D

200 MPa

Q40

In Nepal, the cost-effective restorative material for Class V lesions is:

A

Composite resin

B

GIC or amalgam

C

Gold inlay

D

Porcelain veneer

Q41

Bite registration material in Nepal commonly used is:

A

Wax only

B

Aluwax or silicone bite registration material

C

Alginate

D

Impression compound

Q42

A patient with sudden severe lower abdominal pain and referred shoulder pain is most suggestive of which condition?

A

Appendicitis

B

Tubal ectopic pregnancy

C

Ovarian cyst rupture

D

Urinary tract infection