1.In case of class 5 provisional restoration what’s factor important for locking:
a. 50% expansion of restoration
b. 25 % polymerization shrinkage
c. 75 % polymerization shrinkage
d. Undercut
2.Which tooth will the matrix band be a problem with when placing a two surface amalgam?
a. Mesial on maxillary first molar
b. Distal on maxillary first premolar
c. Mesial on maxillary second premolar
d. Distal on mandibular first molar
3.On what surface of the tooth is there deposition of
Fluoride ?
a. Smooth surface
b. Pits
c. Buccal surfaces
d. Fissures
4.What composite should ideally be used for a class 5 ?
a. Microfil because it is polished better
b. Microfil because it is stronger
c. Hybrid because it is polished better
d. Hybrid because it is stronger
5.Hard caries on dentin is removed by ?
a. Bur high speed
b. Bur low speed
c. Bur design
d. Handle design
6.New recommendation is to finish amalgam:
a. 24 h
b. 48 h
c. 12 h
d. 36 h
7.Tooth loss by acids :
a. Erosion
b. Abrasion
c. Attrition
d. Bruxism
8.Traditional glass ionomer:
a. Susceptible to dehydrate + no free monomer
b. Fluoride release
c. No water contamination
d. Rehydration
9.The relationship between the working end of the hand piece and tooth surface is called:
a. Adaptation
b. Activation
c. Angulations
d. Accessibility
10. Best instrument to plane gingival area in class 2:
a. Gingival marginal trimmer
b. Hatchet
c. Enamel hatchet
d. Chisel
11. Enamel caries proximally:
a. Should be restored immediately
b. Should be restored with complete involvement of DEJ
c. Should be restored when reach DEJ
d. Should be restored when reach DEJ and wide spread start
12. Patient has bulimia and has lesion in palatal surface in upper teeth with recurrent vomiting. What is the type of lesion :
a. Attrition
b. Abrasion
c. Bruxism
d. Erosion
13. Electric pulp tester on the young is not accurate because:
a. Late appearance of Fibers A
b. Late appearance of Fibers C
c. Early appearance of fibers A
d. Early appearance of fibers C
14. After class V GIC restoration removal of a thin flush of GIC is done by:
a. Scalar or knife immediately
b. Finishing abrasives immediately
c. Scale or knife subsequently
d. Finishing abrasives subsequently
1. a + b
2. a + d
3. a + c
4. d + c
15. Clinical failure of the amalgam restoration usually occurs from:
a. Improper cavity preparation.
b. Faulty manipulation.
c. Both of the above
16. Cavity etching before applying GIC is:
a. 10% Polyacrylic acid 10 seconds.
b. Polyacrylic acid 60 seconds.
c. Phosphoric acid 10 seconds.
d. Phosphoric acid 60 seconds
17. The divergence should be mesiodistally for an amalgam restoration:
a. No it should be convergent.
b. If the remaining proximal marginal ridge = 1.6 mm.
c. If the remaining proximal marginal ridge only > 1.6mm.
d. If the remaining proximal marginal ridge only <1.6mm
18. Composite matrix consist of
a. Bis- GMA
b. HEMA
c. Celluloid
d. Mylar
19. Loose enamel rods at the gingival floor of a class II amalgam cavity should be removed using
a. Straight chisel.
b. Hatchet
c. Gingival curette
d. Gingival marginal trimmer
20. Loss of enamel surface due to acidic substance called
a. Abrasion
b. Bruxism
c. Erosion
d. Attrition