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.
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.
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.
"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.
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.
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 dermatome is used
1. To remove scar tissue
2. To harvest skin grafts
3. To abrade skin which is pigmented
4. For pairing of lacerated soft tissue
Oral Surgery
Answer: 2
A dermatome is used to harvest skin grafts.
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.