OPERATIVE DENTISTRY
ACTUAL EXAM QUESTIONS
AND ANSWERS
,1. The TOTAL ETCH bonding system etches the external
cavosurface enamel of the preparation with phosphoric acid,
followed by a different acid scrubbed into the internal portion
of the cavity preparation to demineralize the internal surfaces.
A. True
B. False: B. False
2. The SELECTIVE SELF ETCH bonding systems uses
phosphoric acid to etch the external cavosurface enamel.
Then, a different acidic primer is scrubbed on the internal
surfaces of the preparation to demineralize the internal sur-
faces, dissolve the smear layer, and plug 100% the dentinal
tubules.
A. True
B. False: A. True
3. The appearance of the non-carious Abfraction Class V
lesion would appear as:
A. a cupped out, "C" shaped lesion
B. a wedge shaped or "V" shaped lesion: B. a wedge shaped or
"V" shaped lesion
4. The more enamel involved in the cavity preparation, the
better the bond strength/retention there is.
A. this is because there is more mineralized material in the
substrate
, B. this is because there is less mineralized material in the
substrate
C. this is because there is more organic material in the
substrate: A. this is because there is more mineralized material in
the substrate
5. Why do SELF ETCH and SELECTIVE SELF ETCH bonding
systems usually result in less post-
operative sensitivity than TOTAL ETCH bonding systems? A.
the smear layer is dissolved, but never rinsed away
B. the dentin tubules are never exposed with these
techniques
C. both of the reasons above are reasons why post-operative
sensitivity is decreased: C. both of the reasons above are
reasons why post-operative sensitivity is decreased
6. The advantage(s) of the adhesively bonded (composite
resin) restoration procedure is/are:
A. decreased microleakage at the margins of the restoration
B. decreased recurrent caries
C. decreased post of sensitivity
D. increased strength of the remaining tooth structure
E. all of the above: E. all of the above
7. During the composite resin restoration, as the composite
sets, polymeriza- tion shrinkage occurs. If this shrinkage is
ACTUAL EXAM QUESTIONS
AND ANSWERS
,1. The TOTAL ETCH bonding system etches the external
cavosurface enamel of the preparation with phosphoric acid,
followed by a different acid scrubbed into the internal portion
of the cavity preparation to demineralize the internal surfaces.
A. True
B. False: B. False
2. The SELECTIVE SELF ETCH bonding systems uses
phosphoric acid to etch the external cavosurface enamel.
Then, a different acidic primer is scrubbed on the internal
surfaces of the preparation to demineralize the internal sur-
faces, dissolve the smear layer, and plug 100% the dentinal
tubules.
A. True
B. False: A. True
3. The appearance of the non-carious Abfraction Class V
lesion would appear as:
A. a cupped out, "C" shaped lesion
B. a wedge shaped or "V" shaped lesion: B. a wedge shaped or
"V" shaped lesion
4. The more enamel involved in the cavity preparation, the
better the bond strength/retention there is.
A. this is because there is more mineralized material in the
substrate
, B. this is because there is less mineralized material in the
substrate
C. this is because there is more organic material in the
substrate: A. this is because there is more mineralized material in
the substrate
5. Why do SELF ETCH and SELECTIVE SELF ETCH bonding
systems usually result in less post-
operative sensitivity than TOTAL ETCH bonding systems? A.
the smear layer is dissolved, but never rinsed away
B. the dentin tubules are never exposed with these
techniques
C. both of the reasons above are reasons why post-operative
sensitivity is decreased: C. both of the reasons above are
reasons why post-operative sensitivity is decreased
6. The advantage(s) of the adhesively bonded (composite
resin) restoration procedure is/are:
A. decreased microleakage at the margins of the restoration
B. decreased recurrent caries
C. decreased post of sensitivity
D. increased strength of the remaining tooth structure
E. all of the above: E. all of the above
7. During the composite resin restoration, as the composite
sets, polymeriza- tion shrinkage occurs. If this shrinkage is
