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. Clinical failure of the amalgam restoration usually occurs from:
A. Improper cavity preparation
B. Faulty manipulation.
C. Both of the above.
D. None of the above
2. Maximum time elapsed before condensation of amalgam after titration:
A. 1 minute.
B. 3 minutes
C. 6 minutes.
D. 9 minutes
3. Class II composite resin is lined by:
A. G.I
B. Reinforced ZOE.
C. ZOE with epoxy cement.
D. Cavity varnish
4. In placement of rupper dam:
A. 4 jaw contact in teeth.
B. Only 4 contacts 2 lingual surface and 2 buccal surface
C. Only 4 contacts 2 mesial and 2 distal
D. None of these
5. Rubber dam is contraindicated in:
A. Patient with obstructive nose
B. Mentally retarded Patient
C. Un comparative child.
D. All of these
6. ompomer restorative materials are:
A. Glass ionomer with polymer components
B. Resin systems with fluoride containing glasses
C. Composite resin for cervical restorations only
D. All of these
7. Patient complains from pain during mastication which had gold onlays. The pain could be due to:
A. Chemicals from cement.
B. High thermal conductivity of gold.
C. Related to periodontal ligament
D. Cracked tooth or fractured surface
8. Composite for posterior teeth:
A. Microfilled + fine filler.
B. Macroflled + rough filler.
C. Hybrid + rough filler
D. None of these
9. Indirect composite inlay has the following advantages over the direct composite EXCEPT:
A. Efficient polymerization.
B. Good contact proximally.
C. Gingival seal.
D. Price
10. When polishing the amalgam restoration:
A. Avoid heat generation by using wet polishing paste.
B. Wait 24 hours.
C. A and B
D. Neither of these
11. 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
12. Indirect composite inlay overcome the direct composite by:
A. Insufficient polymerization
B. Good contact proximally
C. Gingival seal
D. All of these
13. 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
14. 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
15. Stainless steel pin is used in amalgam for:
A. Increase retention
B. Increase resistance.
C. Increase streangth.
D. All of these
16. Removal of Undermined Enamel in Class II cavity is done by :
A. Chisel
B. Angle former
C. Excavator
D. All of these
17. A glossy finish is best retained on a:
A. Microfilled composite resin restoration
B. Macrofilled resin restoration.
C. Hybrid composite resin restoration.
D. Fiber reinforced composite resin restoration
18. Reduction in amalgam restoration should be:
A. 1-1.5 mm.
B. 1.5-2 mm
C. 2-3 mm
D. 3-5 mm
19. Depth of amalgam restoration should be:
A. 1 – 1.5 mm.
B. 1.5 – 2 mm
C. 2 – 3 mm.
D. 3 – 5 mm
20. Indirect composite inlay has the following advantages over the direct composite EXCEPT:
A. Efficient polymerization.
B. Good contact proximally.
C. Gingival seal.
D. Good retention
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