MDS PREP
Walshama"s forceps are used to
1) Remove teeth
2) Remove root
3) Clamp blood vessels
4) Reduce nasal bone fractures
Oral Surgery
Answer: 4
Walsham's forceps are a surgical instrument commonly used in maxillofacial surgery. They are designed to reduce and manipulate small, fine bony structures, such as the nasal bones in the case of nasal fractures.
In depressed zygomatic arch fracture, difficulty in opening the mouth is caused by impingement of
1. Condyles
2. Ramus
3. Petrous temporal
4. Coronoid process
Oral Surgery
Answer: 4
The coronoid process can become impinged due to
displacement of the zygomatic arch, restricting the movement of the mandible and
causing trismus (difficulty in mouth opening).
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.
Toxic dosage of lignocaine with adrenaline is
1. 5 mg/kg body weight
2. 10 mg/kg body weight
3. 15 mg/kg body weight
4. 20 mg/kg body weight
Oral Surgery
Answer: 1
Toxic dosage of lignocaine with adrenaline is 5 mg/kg body weight.
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.