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NEETMDS- Oral Surgery mcq
MDS PREP
Of the following, where antrostomy is commonly used? 
 1. To remove high maxillary third molars
 2. To expose a tooth root for apicoectomy
 3. To treat an alveolar abscess
 4. Following closure of an oroantral fistula
Oral Surgery Answer: 4

Idiopathic trigeminal neuralgia most commonly affects the
1. right mandibular division
2. lett maxillary division
3. right ophthalmic division
4. left mandibular division
Oral Surgery Answer: 1

How much time should be taken to inject 2 ml of an anesthetic solution in the tissues?
1. 20 seconds
2. 1 minute
3. 4 minutes
4. 10 minutes
Oral Surgery Answer: 2

Gunshot wounds of the face caused by
1) Low-velocity missiles have a deceptive external appearance in that there is extensive internal damage covered by a small entry wound
2) High-velocity bullets are sterile
3) High-velocity bullets must be sutured as soon as possible
4) None of the above
Oral Surgery Answer: 2

Gunshot wounds of the face caused by high-velocity bullets can lead to extensive internal damage despite a small entry wound, making them particularly dangerous.

The "red line" in Winter"s classification of impacted teeth represents
1) The depth at which the impacted teeth is isolated
2) The angulation of the 2nd molar
3) The summit of the alveolar bone covering the impacted tooth
4) Relation of the 3rd molar to the ramus
Oral Surgery Answer: 1

Maximum recommended dosage of lignocaine with 1:1,00,000 adrenaline subcutaneously is
1) 100 mg
2) 30 mg
3) 500 mg
4) 700 mg
Oral Surgery Answer: 3

The tips of anatomic forceps should be placed
1) On the crown portion
2) At the junction of clinical and anatomical crowns
3) Near junction of apical and middle thirds of clinical crown
4) On the root surface as far apically as possible
Oral Surgery Answer: 4

Action of lignocaine is affected by all except
1) pH at the site of injection
2) Blood flow at the site of injection
3) Vasoconstrictor in the LA solution
4) Action of cholinesterase at the site of injection
Oral Surgery Answer: 4

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