MDS PREP
The mechanical advantage obtained from the wheel and axle principle of elevator is
1. 2.5
2. 3
3. 4.6
4. 6
Oral Surgery
Answer: 3
The mechanical advantage obtained from the wheel and axle principle of elevator is 3.
Hilton"s method deals with
1) Decompression of a cyst
2) Drainage of an abscess
3) Biopsy removal
4) Preanaesthetic check-up
Oral Surgery
Answer: 2
Hilton's method is a surgical technique primarily used for the drainage of abscesses. This method involves creating an incision to allow the pus to escape, thereby relieving pressure and promoting healing.
A patient is on periodic renal dialysis. Minor oral surgery should be performed
1. One day before dialysis
2. On the day of dialysis
3. One day after dialysis
4. One week after dialysis
Oral Surgery
Answer: 3
Minor oral surgery should be performed one day after dialysis in a patient who
is on periodic renal dialysis. This is because the patient's platelet count and
coagulation factors are usually at their lowest before dialysis, which could
increase the risk of bleeding.
Which of the following local anaesthetics is a vasoconstrictor
1. Lidocaine
2. Procaine
3. Bupivacaine
4. Ropivacaine
Oral Surgery
Answer: 4
Ropivacaine is a vasoconstrictor.
Rapid onset of action seen by local anaesthesia in small nerve endings is due to
1. Increased threshold of small nerves due to depolarization
2. Low pH of small nerve fibres
3. High ratio of surface area to the volume of small nerve fibres
4. None of the above
Oral Surgery
Answer: 3
Rapid onset of action seen by local anaesthesia in small nerve endings is due to the high ratio of surface area to the volume of small nerve fibres.
Which of the following elevators fits well in the operator"s hand and can be rotated between the thumb and the finger
1. Couplan elevator
2. Hospital patteren elevator
3. Winter"s elevator
4. Warwick-James elevator
Oral Surgery
Answer: 4
The elevator which fits well in the operator's hand and can be rotated between the thumb and the finger is Warwick-James elevator.
Among the following which nerve innervates the buccal gingiva of the maxillary second premolar?
1. Anterior palatine nerve
2. Buccal nerve
3. Middle superior alveolar nerve
4. Posterior palatine nerve
Oral Surgery
Answer: 3
The middle superior alveolar nerve (MSA) is one of the branches of the maxillary
nerve that innervates the buccal gingival of the maxillary teeth, including the
second premolar. The anterior palatine nerve innervates the palatal aspect,
while the buccal nerve innervates the buccal mucosa and the anterior part of the
palate.
It is difficult to obtain local infiltration anaesthesia in the presence of inflammation/infection because of
1. A decreased pH
2. Increased vascularity
3. Oedema
4. Pain
Oral Surgery
Answer: 1
It is difficult to obtain local infiltration anaesthesia in the presence of inflammation/infection because of a decreased pH.