Dental MCQ Questions — Page 675

Question 1

Which of the following material used in orthodontics, commonly causes sensitivity

ASteel

BCeramic

CNickel

DPlastic

Question 2

A 13 year old male patient complains of pain in upper front teeth region and gives a history of fall on the ground while playing. Intra-oral examination reveals grade I mobility with maxillary left central incisor. Radiologic finding is suggestive of root fracture with 21. Which of the following could be the least favourable form of repair for this tooth?

Answer

Healing with calcified tissue

Answer

Healing with interposition of connective tissue, in which the fractured root surfaces are covered by cementum with connective tissue fibers joining the two fragments.

Answer

Healing with interposition of bone and connective tissue, in which a bony bridge and connective tissue are positioned between the fragments.

Answer

Interposition of granulation tissue

Question 3

Mercapton groups are seen in

DPolyether

Answer

Polysulphide

Answer

Addition silicone

Answer

Condensation silicone

Question 4

Crown completion of deciduous Maxillary 2nd molar occur

AAt birth

Answer

1 ½ month after birth

Answer

12 months after birth

Answer

6 months after birth

Question 5

A 19 year old female patient with the chief complaint of crooked teeth, wants to undergo orthodontic treatment without undergoing extractions. On examination, mild lower incisor crowding was noted. Which of the following model analysis must be done before deciding a treatment plan for this patient?

Answer

Linder Harth analysis

Answer

Pont’s index

Answer

Korkhaus analysis

Answer

Peck and Peck index

Question 6

Patient with leprosy, smear sample taken show 10- 100 bacilli in one field. Bacterial index is:

A1+

B2+

C3+

D4+

Question 7

All are true about lingual ledges except:

Answer

Part of tooth preparation for a resin bonded retainer

Answer

Increases the retention and resistance form

Answer

Decreases the casting rigidity

Answer

Aids in orientation of the casting during cementation

Question 8

The strength of the gypsum specimen when the water in excess of that required for the hydrate of the hemihydrate is left in the specimen is called?

Answer

Dry strength

Answer

Green strength

Answer

Water strength

Answer

Compressive strength

Question 9

FRANKLE-IV used for

Answer

Class-I malocclusion

Answer

Class-II malocclusion

Answer

Class-III malocclusion

Answer

Bimaxillary protrusion