MDS PREP
Maximum recommended dosage of lignocaine with 1:1,00,000 adrenaline subcutaneously is
1. 100 mg
2. 30 mg
3. 500 mg
4. 700 mg
Maximum recommended dosage of lignocaine with 1:1,00,000 adrenaline subcutaneously is 100 mg.
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 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
The addition of hyaluronidase to a local anaesthetic solution might enhance diffusion of local anaesthetic.
Of the following which is most suitable anaesthesia for the extraction of a deciduous molar
1. Inferior alveolar nerve block
2. Surface anaesthesia
3. Local infiltration
4. None of the above
Oral Surgery
Answer: 1
The most suitable anaesthesia for the extraction of a deciduous molar is inferior alveolar nerve block.
The direction of the bevel of the chisel during bone cutting is
1. Away from the bone to be sacrificed
2. Towards the bone to be sacrificed
3. Independent of the bone to be sacrificed
4. Parallel to stress lines
Oral Surgery
Answer: 2
The direction of the bevel of the chisel during bone cutting is towards the bone to be sacrificed.
The following is least toxic of all local anaesthetics
1. Tetracaine
2. Mepivacaine
3. Prilocaine
4. 2-Chloroprocaine
Oral Surgery
Answer: 4
The following is least toxic of all local anaesthetics: 2-Chloroprocaine.
To luxate a tooth with a forceps the movements should be
1. Firm and deliberate primarily to the facial surface with secondary movements to the lingual surface
2. Sharp and definite so periodontal ligament tears easily
3. Figure of "eight" motion
4. None of the above
Oral Surgery
Answer: 1
To luxate a tooth with forceps, the movements should be firm and deliberate primarily to the facial surface with secondary movements to the lingual surface.
A patient who is a grand mal epileptic requires emergency extraction. One should
1. Advise the patient that procedure requires admission to the hospital
2. Proceed with extraction using xylocaine without adrenaline
3. Proceed with extraction if anticonvulsive medication is employed by patient
4. None of the above
Oral Surgery
Answer: 3
In a grand mal epileptic patient requiring emergency extraction, it is essential
to proceed with caution and ensure that the patient is on a stable
anticonvulsive medication regimen. The patient should be monitored closely and
have immediate access to medical support in case of a seizure during the
procedure.