MDS PREP
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.
In endodontic surgery, which of the following about chromic gut suture is not true
1. Its properties are inferior to plain gut suture
2. It is coated with chromium tri-oxide
3. It is less biocompatible than plain gut suture
4. Its absorption is faster than the plain gut sutures
Oral Surgery
Answer: 4
In endodontic surgery, the statement that chromic gut suture has faster absorption than plain gut sutures is not true.
Local anaesthetic cartridges contain small bubbles. These bubbles contain
1. Oxygen gas
2. Carbon dioxide gas
3. Nitrogen gas
4. Carbon monoxide gas
Oral Surgery
Answer: 3
Local anaesthetic cartridges contain small bubbles of nitrogen gas.
Double contrast phase contrast arthroscopy is used to study
1. Clicking of TMJ
2. Deviation of TMJ
3. Joint space
4. Disc
Oral Surgery
Answer: 3
Double contrast phase contrast arthroscopy is used to study the joint space.
If efforts in cardiopulmonary resuscitation are effective there will be
1) Constriction of pupils
2) Dilatation of pupils
3) Hypertension immediate
4) None of the above
Oral Surgery
Answer: 1
Effective cardiopulmonary resuscitation (CPR) can lead to improved cerebral
perfusion and oxygenation, which may result in constriction of the pupils (miosis)
as the body begins to recover from the state of shock.
Eburnation is seen in
1) Malunion
2) Nonunion
3) Osteomyelitis
4) Osteoradionecrosis
Oral Surgery
Answer: 2
Eburnation is the process of converting living bone tissue into a sclerotic, or hardened, avascular bone due to lack of blood supply. This can occur at the site of a nonunion, which is where a fracture fails to heal properly, and the bone ends remain separate.
To drain pus from an abscess, the surgeon should
1) Cut an eclipse from the abscess surface to allow for a drain
2) Aspirate the contents
3) Penetrate into abscess cavity & probe with an artery forceps to allow for flow of pus
4) Cut only the mucosa and skin
Oral Surgery
Answer: 3
Proper abscess drainage involves creating an incision to allow pus to drain completely. Probing with an artery forceps ensures complete evacuation of the cavity. Other methods, like simple aspiration or superficial incisions, may not adequately drain the abscess.
In children jaw fractures are normally immobilized for
1. 3 months
2. 6-8 weeks
3. 3-4 weeks
4. 5-10 days
Oral Surgery
Answer: 3
In children, the healing process for fractures is faster due to the high vascularity and rapid bone turnover in growing tissues. Mandibular fractures in children are typically immobilized for a shorter duration compared to adults, as prolonged immobilization can interfere with the growth of the jaw. Immobilization for 3-4 weeks is generally sufficient to allow proper healing without compromising growth.