A fresh set of 20 random questions is generated every time you open this page and every time you refresh it.For each of the following multiple choice questions, choose the most appropriate answer :
1. Calcium hydroxide is used in deep cavity because it is:
A. Simulate formation of 2nd dentine
B. Not irritant to the pulp.
C. For thermal isolation
D. All of these
2. Removal of Undermined Enamel in Class II cavity is done by :
A. Chisel
B. Angle former
C. Excavator
D. All of these
3. The following chemically bond to the tooth:
A. Composite resin.
B. Dental sealants.
C. Glass ionomer cement
D. All of the above
4. Loose enamel rods at the gingival floor of a class II amalgam cavity should be removed using :
A. Straight chisel.
B. Hatchet.
C. Gingival curetla.
D. Gingival marginal trimmer
5. What is the copper ratio that eliminates gamma phase 2:
A. 2% copper
B. 4% copper
C. 10 % copper
D. 13 % copper
6. Stainless steel pin is used in amalgam for:
A. Increase retention
B. Increase resistance.
C. Increase streangth.
D. All of these
7. After finish class v glass-ionomer cement we do finishing with:
A. Pumice slurry.
B. Aluminum-oxide disc
C. Either of these
D. None of these
8. Polishing bur have:
A. Less than 6 blades.
B. 6-7 blades.
C. 10-12 blades.
D. More than 12 blades
9. MOD amalgam restoration with deep mesial box, PT come with pain related to it after 1 month due to:
A. Pulp involvement
B. Supraocclusion.
C. Upon contact.
D. Gingival recession
10. In cavity preparation, the width of the cavity is:
A. 1/2 inter cuspal distance.
B. 1/3 inter cuspal distance
C. 2/3 inter cuspal distance.
D. None of these
11. Reduction in amalgam restoration should be:
A. 1-1.5 mm.
B. 1.5-2 mm
C. 2-3 mm
D. 3-5 mm
12. What is the cavo-surface angle of prep for amalgam restoration:
A. 30 degree
B. 60 degree
C. 90 degree
D. 130 degree
13. The x- ray of choice to detect the proximal caries of the anterior teeth is:
A. Periapical x-ray
B. Bitewing x-ray.
C. Occlusal x-ray.
D. None of these
14. It has been proven that amalgam restoration has the following characteristics:
A. Micro leakage decrease with aging of the amalgam restoration.
B. It is the least techniques sensitive of all current direct restorations.
C. High dimensional changes.
D. All of these
15. Selection of shade for composite is done:
A. Under light.
B. After drying tooth & isolation with rubber dam
C. Both A and B
D. None of the above
16. To provide maximum strength of amalgam restoration the cavo-surface angles should not:
A. Approach 75 Image with outer surface.
B. Approach 90 Image with outer surface.
C. Be supported by sound dentine.
D. Be located in area free of occlusal stress
17. Composite for posterior teeth:
A. Microfilled + fine filler.
B. Macroflled + rough filler.
C. Hybrid + rough filler
D. None of these
18. In the preparation of cavity class II , for restoration with composite resin all Cavosurface angles should be:
A. Well rounded
B. Right angles.
C. Acute angles.
D. Obtuse angles
19. To prevent discoloration under amalgam filling:
A. Use Zn phosphate box.
B. Use cavity varnish
C. Wash the cavity with NaOCL b4 filling.
D. Use the correct amalgam-alloy ratio
20. Silicate cement:
A. First tooth colored restoration material
B. It can be used as permanent filling.
C. It contains 12-25 % fluoride
D. A and C
Dr K Chaudhry 5 Alpha Inmternational City, Fatehabad 125050 M: 9810570740, 9810571993facebook.com/doctorkc