MDS PREP
For extraction of mandibular molar, anaesthesia is given to act on
1. Inferior alveolar nerve
2. Buccal nerve
3. Lingual nerve
4. Masseteric nerve
Oral Surgery
Answer: 1
For extraction of mandibular molar, anaesthesia is given to act on the inferior alveolar nerve.
The following factors play a role and cause variations in susceptibility of sensory nerve fibers to local anaesthesia
1. Diameter of the nerve fiber
2. Distance between nodes of Ranvier
3. Length of nerve fiber
4. All of the above
Oral Surgery
Answer: 4
The following factors play a role and cause variations in susceptibility of sensory nerve fibers to local anaesthesia: diameter of the nerve fiber, distance between nodes of Ranvier, and length of nerve fiber.
Which of the following would be indicated if one expected a long surgical procedure and a general anaesthetic to be administrated
1. Sodium thiopental iv
2. Vinyl ether, open drop method
3. Intubation with individually selected anaesthetic agent
4. None of the above
Oral Surgery
Answer: 3
If one expects a long surgical procedure and a general anaesthetic to be administered, intubation with individually selected anaesthetic agent is indicated.
Commnest complication with Risdon and submandibular incision is
1. Damage to marginal mandibular nerve
2. Damage to cervical branch of facial nerve
3. Damage to inferior alveolar nerve
4. Damage to lingual nerve
Oral Surgery
Answer: 1
Commonest complication with Risdon and submandibular incision is damage to marginal mandibular nerve.
Among the following which is treatment of choice for infection with fluctuation in an afebrile patient (or) A patient has a localized infection with pus formation. Treatment of choice is
1) Administration of antibiotics
2) Application of hot packs to the area
3) Incision and drainage
4) Antibiotics administration followed by I & D
Oral Surgery
Answer: 3
The treatment of choice for a patient with a localized infection and pus formation, especially if they are afebrile (without fever), is incision and drainage (I & D). This involves creating a small opening in the skin to allow the pus to drain out. While antibiotics can be used as an adjunctive therapy to prevent the spread of infection, they are not always necessary in the initial management of a localized abscess if it is managed effectively with I & D.
To give field block the LA should be deposited near
1. Main trunk
2. Large branch of peripheral nerve
3. Small nerve endings
4. Periodontal ligament
Oral Surgery
Answer: 2
To give a field block, the LA should be deposited near a large branch of peripheral nerve.
Which of the following is complication of an open fracture
1) Malunion
2) Nonunion
3) Infection
4) Crepitation
Oral Surgery
Answer: 3
An open fracture is a fracture that communicates with the outside environment, typically through a wound. This increases the risk of bacterial infection
Sensitivity to local anaesthetics is greater in
1. Type B fibres
2. Type C fibres
3. Type A delta fibres
4. Fibres supplying the muscle spindles
Oral Surgery
Answer: 2
Type C fibers, which are unmyelinated and smaller in diameter, are more sensitive to local anesthetics compared to other types of nerve fibers.