MDS PREP
The following is least toxic of all local anaesthetics
1) Tetracaine
2) Mepivacaine
3) Prilocaine
4) 2-Chloroprocaine
Oral Surgery
Answer: 4
Myelinated nerve fibres have all of the following properties except
1) Conduction is slower in myelinated than in non-myelinated fibres
2) Current discharges at nodes of Ranvier
3) Outer layer is of lipids
4) None of the above
Oral Surgery
Answer: 1
What is the average duration of immobilization o jaw fractures in adults?
1. 3-4 months
2. 5-6 weeks
3. 2-3 weeks
4. 6 months
Oral Surgery
Answer: 2
A condition in which there is a lateral 11 curvature of the spine, with rotation of the vertebrae, is termed
1. scoliosis
2. lordosis
3. geotrichosis
4. kyphosis
Oral Surgery
Answer: 1
Ecchymosis in the post auricular region over the mastoid process is called as
1) Battle"s sign
2) Murphy"s sign
3) Guerin"s sign
4) None of the above
Oral Surgery
Answer: 1
Limited accessibility is one of the most disadvantages of the following flap
1) Envelop flap
2) Semilunar flap
3) Three cornerd flap
4) Four cornerd flap
Oral Surgery
Answer: 2
A mandibular dental infection from the mandibular first molar which exists the buccal cortical plate above the muscle attachment will cause abscess of
1) Buccal space
2) Masseter space
3) Vestibular sulcus
4) Masticatory space
Oral Surgery
Answer: 3
In which of the following anterior open bite occurs?
1) Bilateral condylar fractures
2) Symphysis fracture on one side and angle fracture on the other side of the mandible
3) Horizontal fracture of the maxilla
4) Both A and C
Oral Surgery
Answer: 4
Anterior open bite can occur in bilateral condylar fractures and horizontal fractures of the maxilla.