MDS PREP
Only nitrogen oxide alone is not used as a general anaesthetic agent because of the
1) Poor analgesic properties
2) Expense of the agent and its explosive hazard
3) Difficulty in maintaining an adequate oxygen concentration
4) Hepatotoxic nature
Oral Surgery
Answer: 3
The recurrent ranula is best treated by
1) Electrosurgery
2) Cryosurgery
3) Marsupialization
4) Sublingual gland excision
Oral Surgery
Answer: 4
An approach to an impacted mandibular molar is achieved by
1) Envelop flap
2) Bayonet flap
3) "L" shaped flap
4) All of the above
Oral Surgery
Answer: 4
When extracting an upper first bicuspid, the apical third of the buccal root is fractured . If the fractured root is
not in the socket, it is most commonly found in the
1. buccal soft tissue
2. maxillary sinus
3. palatal soft tissue
4. lingual pouch area
Oral Surgery
Answer: 1
Excess of plasma level of lignosis can cause cardiovascular collapse due to
1) Myocardial depression
2) Vagal stimulation
3) Syncope
4) CNS excitability
Oral Surgery
Answer: 1
In a patient with bilateral dislocated fractures of the necks of the mandibular condyles one can except the following clinical signs
1) Anterior open bite
2) Inability to protrude the mandible
3) Inability to bring posterior molars into contact
4) Both A and B
Oral Surgery
Answer: 4
In bilateral dislocated fractures of the necks of the mandibular condyles, anterior open bite and inability to protrude the mandible are common clinical signs.