MDS PREP
Depressed fracture of the zygomatic area may be clinically recognised by
1. Concavity of the overlying tissue in the zygomatic arch area
2. Interference with movements of the mandible
3. Subluxation of condyles
4. Both A and B
Oral Surgery
Answer: 4
Concavity of the overlying tissue in the zygomatic arch area: This indicates a loss of structural integrity due to the fracture.Interference with movements of the mandible: The zygomatic bone plays a role in the overall facial structure and function, and a fracture can affect jaw movement.Both of these signs are indicative of a depressed fracture in this region.
Subjective symptom of buccal nerve block is
1. Numbness and tingling sensation of the buccal mucosa
2. Numbness of the lingual mucosa near molars
3. No subjective symptoms
4. A & B
Oral Surgery
Answer: 3
While the buccal nerve block is used to anesthetize the buccal mucosa and buccal
gingival tissues of the maxillary molars, the actual technique does not
typically produce any specific subjective symptoms in the patient other than the
sensation of the needle. The patient may feel numbness if the anesthetic
solution is inadvertently placed in the oral mucosa or if the block is done
improperly.
In dislocation of the jaw, displacement of the articular disc beyond the TM joint results from spasm of excessive contraction of the following muscle
1. Buccinator
2. Lateral pterygoid
3. Masseter
4. Temporalis
Latreal Pterygoid is inserted on Mandible
The addition of hyaluronidase to a local anaesthetic solution might
1) Increase the duration of anaesthesia
2) Limit the area of anaesthesia
3) Reduce bleeding
4) Enhance diffusion of local anaesthetic
Oral Surgery
Answer: 4
Hyaluronidase is an enzyme that breaks down hyaluronic acid, a component found in the extracellular matrix. When added to a local anesthetic, it increases the permeability of tissues, facilitating enhanced diffusion of the anesthetic agent into the surrounding areas. This can broaden the spread of the anesthetic, allowing for a more effective and comprehensive blockade of nerve signaling.
Alpha adrenergic agonists are used in combination with local anaesthetics to
1. Increase the rate of liver metabolism of local anaesthetic
2. Increase the concentration of LA at receptor site
3. Both the above
4. None of the above
Oral Surgery
Answer: 2
Alpha adrenergic agonists are used in combination with local anaesthetics to increase the concentration of LA at receptor site.
Which of the following is preferred local anaesthetic technique for haemophilics
1. Nerve block
2. Supraperiosteal
3. Intraligamentary
4. Field block
Oral Surgery
Answer: 3
Intraligamentary anaesthesia is the preferred local anaesthetic technique for haemophilics.
Scrub technique refers to a method of scrubbing the
1. Surgical instruments after a contaminated case
2. Patient body surface before placing surgical incison, to decrease bacterial flora
3. Operating room
4. Operator"s hands and forearms before donning gown and gloves
Oral Surgery
Answer: 4
Scrub technique refers to the method of scrubbing the operator's hands and
forearms before donning gown and gloves. This is essential for maintaining a
sterile environment and reducing the risk of surgical site infections.
The amount of vasoconstrictor in 1 mL of 2 % lignocaine solution with 1:2,00,000 adrenaline is
1. 0.5 mg
2. 0.05 mg
3. 0.005 mg
4. 0.0005 mg
Oral Surgery
Answer: 3
The amount of vasoconstrictor in 1 mL of 2 % lignocaine solution with 1:2,00,000 adrenaline is 0.005 mg.