MDS PREP
Serum sickness usually occurs after a sensitization period of
1. 24 hours
2. 5 days
3. 1-3 weeks
4. 4-8 weeks
Oral Surgery
Answer: 3
Submandibular calculus can be removed by
1) Dilation of the duct
2) Excision of the opening of duct
3) Removal of the gland
4) Incision of the duct and removal of calculus
Oral Surgery
Answer: 4
A pregnant patient in second trimester falls into syncope during extraction of upper molars. She should be kept in
1) Trendelenburg position
2) Head down towards her feet
3) Right lateral position
4) Left lateral position
Oral Surgery
Answer: 4
All of the following fractures of the jaw. may produce an anterior open bite, except
1. bilateral fracture in the mental region
2. Le Fort I fracture
3. bilateral fracture of the condyle
4. unilateral fracture of the ramus
Oral Surgery
Answer: 4
Rongeur is commonly used to
1) Cut the bone
2) Extract third molars
3) Place the sutures in the areas where access is limited
4) None of the above
Oral Surgery
Answer: 1
The following is least toxic of all local anaesthetics
1) Tetracaine
2) Mepivacaine
3) Prilocaine
4) 2-Chloroprocaine
Oral Surgery
Answer: 4
Paraesthesia during a mandibular nerve block is due to
1) Sodium conductance through the nerve
2) Acid pH of the anaesthetic solution
3) Contact of the needle with the nerve trunk
4) Poor technique
Oral Surgery
Answer: 3
During cryosurgery
1) Cells get evaporated
2) Cell will not die, only freeze
3) Patients need general anaesthesia
4) None of the above
Oral Surgery
Answer: 2
During cryosurgery, cells do not die immediately; they freeze, which can lead to cell death over time.