III INTERNAL ASSESSMENT EXAM/ PRELIM EXAM
FINAL YEAR B.D.S
SECTION A 20 marks
Multiple Choice Questions
1) Retention form for amalgam cavity preparation requires
a) Flat pulpal floor
b) Adequate thickness of restorative material
c) Occlusal convergence of cavity walls
d) Rounded internal line angles
2) Which of the following tests for tooth vitality assessment has highest diagnostic accuracy?
a) Heat test
b) Cold test
c) Anaesthetic test
d) Test cavity
3) Which of the following is not a Zones of Fish theory?
a) Zone of infection
b) Zone of contamination
c) Zone of stimulation
d) Zone of inhibition
4) Pheonix Abscess is
a) Acute alveolar abscess
b) Chronic alveolar abscess
c) Acute exacerbation of asymptomatic apical periodontitis
d) Radicular cyst
5) The mandibular molars generally have
a) Two roots & three canals
b) Two roots & two canals
c) Three roots & two canals
d) None of the above
6) Disinfection of the root canal is obtained with
a) Irrigation
b) Debridement
c) Intracanal medicament
d) All of the above
7) Apicoectomy is contraindicated in
a) Overfilled canals
b) Lateral perforation at apical third
c) Extensive bone loss
d) It is not contraindicated
8) Thermafil is an
a) Enlarging instrument
b) Endodontic obturator
c) Instrument to remove pulp
d) Cold gutta percha technique
9) The chelating agent used as an irrigant for root canal is
a) Sodium hypochlorite
b) MTAD
c) EDTA
d) Chlorhexidine
10) Which of the following can be used as a transport media for avulsed tooth?
a) HBSS
b) Patient’s own saliva
c) Propolis
d) All of the above
11) Which of the following materials has been shown to stimulate reparative dentine formation
most effectively when applied to the pulpal floor of a very deep cavity?
a) Copalite varnish
b) Zinc phosphate cement
c) Anhydrous glass ionomer cement
d) Calcium hydroxide preparation
12) The weakest phase in dental amalgam is:
a) Gamma 1
b) Eta
c) Gamma 2
d) Epsilon
13) Thread Mate System is the most widely used
a) Friction locked pins
b) Cemented pins
c) Self threading pins
d) None of the above
14) Hand Instrument designed to produce a proper bevel on gingival margins of proximooclusal
preparations is :
a) Chisel
b) Hatchet
c) Gingival marginal trimmer
d) Condenser
15) Acid etching is done by using
a) 30 to 37% phosphoric acid
b) 30 % hydrochloric acid
c) 20% hydrogen peroxide
d) None of the above
16) Procedural errors during cleaning & shaping of the root canal are:
a) Zipping
b) Ledge formation
c) Instrument separation
d) All of the above
17) The occlusal divergence in cast restoration (Inlay) is
a) 2- 10 degrees
b) 20-25 degrees
c) 15-20 degrees
d) 30-35 degrees
18) Which of the following is an electrolytic precipitated gold?
a) Laminated gold
b) Cohesive gold
c) Mat gold
d) None of the above
19) Cavosurface angle for amalgam restoration is
a) 120 degrees
b) 20 degrees
c) 90 degrees
d) 135 degrees
20) Compomer is a
a) Polyacid modified resin composite
b) Miracle mix
c) Glass ionomer for cervical restorations only
d) Bonding agent
