SAMPLE OF EXAMINATION QUESTIONS

SAMPLES OF EXAMINATION QUESTIONS

 

1.         Mention two (2) hazards combined with rotary instruments.

a.         noise emission   spread of micro-organism

          b.         heat generation  vibration, torque, pressure

2.      Light-cured glass ionomer liner is the material of choice under composites
because:

          a.         bond the composite to tooth structure

          b.         cariostatic and anti-bacterial action

3.       What type of matrices are used in the following:

a.       Class III restoration

mylar strip or matrix

b.       Class IV restoration

          mylar strip or matrix – metal material e’green comp.

          performed plastic or celluloid crowns forms.

c.       Class V restoration   

          cervical matrix or overlapping matrix or dead soft metal matrix for (G.I.)        

4.            Advantages of pin-retained amalgam restorations are:

               a.       conservative tooth structure, economic

               b.       resistance and retention of the restoration

5.            What are the factors that determine the selection of pin size?

               a.       the amount of dentin available to safely receive the pin

               b.       the amount of retention desired

6.      During the early stage of setting of conventional glass ionomer restorative cements, if their surfaces are not protected against moisture attack, hydration will occur and is clinically manifested by:

                a.             increased the opacity

                b.             dilution of metal ions lead to weak material

7.      Which (one or more) of these materials should not be used under resin
composite and Why?

 a.         Calcium Hydroxide.________________________________

 b.         Zinc Oxide Eugenol cement. Inhibits resin polymerization

 c.         Glass Ionomer Cement.______________________________

d          Copal varnish.  Interferes with etching and dentin bonding

8.      Two types of failure are most common with esthetic inlays and onlays:

            a.         bulk fracture

          b.         marginal breakdown

9.        Restoration repair is defined as removal of part of an existing restoration the bulk of the restoration assessed and left intact and fresh restoration is applied.

10.     Mention all available incremental techniques to place composite restorations,and determine the least recommended one.

            1.         oblique

            2.         vertical

            3.         horizontal