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Oral Surgery

Description: oral surgery
Number of Questions: 15
Created by:
Tags: MDS entrance Oral surgery MDS (Masters in Dental Surgery)
Attempted 0/15 Correct 0 Score 0

Mechanical advantage obtained from the wedge principle of elevator is

  1. 3

  2. 6

  3. 2.5

  4. 4.6

  5. 5


Correct Option: C
Explanation:

Mechanical advantage 2.5 is for wedge principle.

Which of the following statement is correct?

  1. Endocarditis is contraindicated for extraction of teeth.

  2. Glomerulonephritis is contraindicated for extraction of teeth.

  3. Rheumatic fever is contraindicated for extraction of teeth.

  4. Vincent infection is contraindicated for extraction of teeth.

  5. All of the above


Correct Option: D
Explanation:

This is correct answer. Vincent infection is contraindicated for extraction of teeth.

The fracture of the tooth bearing segment of the mandible is ___________.

  1. simple fracture

  2. complex fracture

  3. compound fracture

  4. comminuted fracture

  5. none of the above


Correct Option: C
Explanation:

 Compound fracture: these fractures have a communication with the external environment, usually by the periodontal ligament of a tooth, and involve all fracture of the tooth-bearing portions of the jaws.

The best example of an elevator which works on wheel and axle principle is

  1. Howarth's periosteal elevator

  2. Winter cross bar elevator

  3. Millers apexelevator

  4. Straight elevator

  5. All of the above


Correct Option: B
Explanation:

Winter cross bar elevator works on wheel and axle principle.

According to biological site and mode of action, which of the following is a class A local anaesthetic substance?

  1. Articaine

  2. Benzocaine

  3. Biotoxin

  4. Quaternary ammonium analogue

  5. Prilocaine


Correct Option: C
Explanation:

Biotoxin: Class A local anaesthesia.

According to American Society of Anaesthelogist, the physical status of a patient with mild systemic disease is

  1. ASA-I

  2. ASA-II

  3. ASA-III

  4. ASA-IV

  5. All of the above


Correct Option: B
Explanation:

ASA-II: A patient with mild systemic disease.

To give nerve block, the LA should be deposited near

  1. large branch of peripheral nerve

  2. main trunk

  3. small nerve endings

  4. periodontal ligament

  5. small nerve endings and large branch of peripheral nerve


Correct Option: B
Explanation:

Main trunk is blocked in nerve block.

pKa of bupivacaine is

  1. 7.6

  2. 7.9

  3. 8.5

  4. 8.1

  5. 9.1


Correct Option: D
Explanation:

pKa of bupivacaine is 8.1.

Bird face appearance is seen in

  1. unilateral TMJ ankylosis

  2. TMJ dislocation

  3. bilateral TMJ ankylosis

  4. bilateral condylor fracture

  5. unilateral condylor fracture


Correct Option: C
Explanation:

Bilateral TMJ ankylosis is openbite, relative maxillary hyperplasia, micrognathia with small or deformed chin resulting in bird face.

Which syndrome is not associated with mandibular hypoplasia?

  1. Goldenhar's syndrome

  2. Hemifacial microsomia

  3. Pierre Robin's anomal

  4. Crouzen disease

  5. Treacher Collins syndrome


Correct Option: D
Explanation:

Hypoplastic maxilla or retrognathic maxilla is seen in Crouzen disease.

Which surgical procedure is carried out to treat fibrous ankylosis?

  1. Gap arthroplasty

  2. Interpositional gap arthroplasty

  3. Condylectomy

  4. Discoplasty

  5. Capsulorrhaphy


Correct Option: C
Explanation:

Condylectomy is indicated in case of fibrous ankylosis.

The severe complication of the canine space infection is

  1. dry socket

  2. cavernous sinus thrombosis

  3. muscle trismus

  4. devitalization of teeth

  5. ankylosis


Correct Option: B
Explanation:

Cavernous sinus thrombosis is the severe complication of the canine space infection.

Which of the following is not a method of treatment of cyst?

  1. Marsupialisation

  2. Resection

  3. Enucleation

  4. Cauterization

  5. Resection and enucleation


Correct Option: D
Explanation:

Cauterization is the burning of part of a body to remove or close off a part of it.

Hind approach to the TMJ is a through

  1. post ramal approach

  2. endaural approach

  3. retroauricular approach

  4. submandibular approach

  5. hemicoronal approach


Correct Option: A
Explanation:

Post ramal approach: Hind approach.

Aspirate, which is clear, pale, straw coloured fluid, is suggestive of

  1. odontogenic keratocyst

  2. stafne's cyst

  3. dentigerous cyst

  4. cavernous hemangioma

  5. traumatic bone cyst


Correct Option: C
Explanation:

Dentigerous cyst is clear pale straw coloured fluid.

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