MDS PREP
Advantage of chisel and mallet over bur in removing bone is
1. Less skill is needed
2. Psychologically more acceptable
3. No coolant is necessary
4. None of the above
Oral Surgery
Answer: 3
The advantage of chisel and mallet over bur in removing bone is that no coolant is necessary.
The blood product of choice for treatment of haemophilics is
1. Fresh blood
2. Cryoprecipitate
3. Fresh frozen plasma
4. Plasma
Oral Surgery
Answer: 2
Cryoprecipitate is the blood product of choice for treatment of haemophilics, as
it is rich in Factor VIII, which is deficient in this condition. It is used to
control bleeding during surgical procedures.
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.
To perform tracheostomy entry should be made at the
1) Cricothyroid ligament
2) Thyroid membrane
3) Thyroid notch
4) Cricoid cartilage
Oral Surgery
Answer: 1
A tracheostomy is a surgical procedure that involves creating an opening in
the trachea (windpipe) to facilitate breathing. The preferred site for making
the incision during a tracheostomy is the cricothyroid ligament,
which is located between the cricoid and thyroid cartilages.
Cricothyroid ligament: This ligament is relatively
superficial and provides a safe access point to the airway, especially in
emergency situations. It is often chosen for emergency tracheostomy because
it is easier to locate and access quickly.
The first sensation to be lost following administration of local anaesthetic is
1. Proprioception
2. Pain
3. Touch
4. Temperature
Oral Surgery
Answer: 2
The first sensation to be lost following administration of local anaesthetic is pain.
"Ash forceps" is commonly used for
1. Extraction of lower incisor
2. Extraction of upper canines
3. Holding tissues prior to biopsy
4. Holding vascular areas during surgery
Ash forceps are commonly used for extraction of lower incisor.
Lidocaine is used more commonly in dentistry because lidocaine
1. Causes less depression of CNS
2. Causes less cardiovascular collapse
3. Causes lesser incidence of allergic reactions
4. Is 50 times more potent than procaine
Oral Surgery
Answer: 3
Lidocaine is used more commonly in dentistry because it causes lesser incidence of allergic reactions.
Gillies approach for reduction of zygomatic fractures is done through
1. Temporal fossa
2. Infra temporal fossa
3. Infra orbital fossa
4. All of the above
Oral Surgery
Answer: 1
The temporal fossa is located on the side of the skull, above the zygomatic arch and lateral to the orbit. The Gillies approach involves an incision in the temporal region to access the zygomatic bone, which is then manipulated to reduce the fracture and restore its normal anatomical position. This approach is commonly used in oral and maxillofacial surgery for the management of complex zygomatic fractures.