EFDA FINAL EXAM PRACTICE EXAM 180
QUESTIONS & CORRECT ANSWERS LATEST 2025
Wear resistance of hybrid composites is equal and occasionally superior to the
microfill composite.
a. True
b. False - ANSWER-a. True
Hottel p. 176
________ is much more difficult to bond to than enamel because it contains low
surface energy and it is porous.
a. Dentin
b. Glass Ionomer
c. Cementum
d. All of the above - ANSWER-a. Dentin
Hottel p. 178
Composite resin is placed starting at the ______ portion of the cavity (proximal
box). - ANSWER-Deepest
Hottel p. 181
Waiting ____ minutes before finishing improves wear rate significantly
a. 15
,b. 16
c. 10
d. 12 - ANSWER-a. 15 minutes
Hottel p. 182
Margins of Class II composite resin restorations placed without the use of a
rubber dam demonstrate marginal leakage _______ weeks after placement.
a. 2 to 4 weeks
b. 1 to 2 weeks
c. 4 to 6 weeks - ANSWER-c. 4 to 6 weeks
Hottel p. 177
Conserving tooth structure is possible with _______ preparations. - ANSWER-
Modified
Hottel pg 177
The etched area should exhibit a ______ appearance. - ANSWER-Frosted
Hottel pg 179
Occlusal wear can cause what of the opposing teeth? - ANSWER-Over-eruption
Hottel p. 176
A slight bevel of _____ may be used on the facial/lingual margins to enhance
finishing.
a. 0.05mm
,b. 0.5mm
c. 5mm - ANSWER-b. 0.5mm
Hottel p. 177
Acid-etched enamel must be washed for how many seconds?
a. 20 seconds
b. 10 seconds
c. 30 seconds - ANSWER-b. 10 seconds
Hottel p. 179
Composite materials are rather viscous, sometimes sticky and can be condensed
to build up a firm contact point.
a. True
b. False - ANSWER-b. False
Hottel p. 181
Once the matrix is removed, apply the light source for 20-30 seconds on the ____
and ____ to ensure curing of the composite margins.
a. Buccal and Occlusal
b. Buccal and Lingual
c. Lingual and Occlusal - ANSWER-b. Buccal and Lingual
Hottel p. 182
Which of the following is NOT an advantage to consider with composite resin?
a. Relatively inexpensive
, b. Easily repaired
c. Fracture resistance
d. Technique sensitive - ANSWER-d. Technique sensitive
Hottel p. 175
The shade is selected prior to operative procedures because of color changes that
occur in teeth as a result of dehydration during isolation, operative procedures,
and etching.
a. True
b. False - ANSWER-a. True
Hottel p. 177
Thin layers of resin materials ______ withstand occlusal forces. - ANSWER-Cannot
Hottel p. 178
The bonding agent is only placed over the dentin.
a. True
b. False - ANSWER-False
Hottel p. 180
Which typle of composite resin is more difficult to finish?
a. Microfilled
b. Hybrid filler
c. Macrofilled
d. Both A and B - ANSWER-d. All of the above
QUESTIONS & CORRECT ANSWERS LATEST 2025
Wear resistance of hybrid composites is equal and occasionally superior to the
microfill composite.
a. True
b. False - ANSWER-a. True
Hottel p. 176
________ is much more difficult to bond to than enamel because it contains low
surface energy and it is porous.
a. Dentin
b. Glass Ionomer
c. Cementum
d. All of the above - ANSWER-a. Dentin
Hottel p. 178
Composite resin is placed starting at the ______ portion of the cavity (proximal
box). - ANSWER-Deepest
Hottel p. 181
Waiting ____ minutes before finishing improves wear rate significantly
a. 15
,b. 16
c. 10
d. 12 - ANSWER-a. 15 minutes
Hottel p. 182
Margins of Class II composite resin restorations placed without the use of a
rubber dam demonstrate marginal leakage _______ weeks after placement.
a. 2 to 4 weeks
b. 1 to 2 weeks
c. 4 to 6 weeks - ANSWER-c. 4 to 6 weeks
Hottel p. 177
Conserving tooth structure is possible with _______ preparations. - ANSWER-
Modified
Hottel pg 177
The etched area should exhibit a ______ appearance. - ANSWER-Frosted
Hottel pg 179
Occlusal wear can cause what of the opposing teeth? - ANSWER-Over-eruption
Hottel p. 176
A slight bevel of _____ may be used on the facial/lingual margins to enhance
finishing.
a. 0.05mm
,b. 0.5mm
c. 5mm - ANSWER-b. 0.5mm
Hottel p. 177
Acid-etched enamel must be washed for how many seconds?
a. 20 seconds
b. 10 seconds
c. 30 seconds - ANSWER-b. 10 seconds
Hottel p. 179
Composite materials are rather viscous, sometimes sticky and can be condensed
to build up a firm contact point.
a. True
b. False - ANSWER-b. False
Hottel p. 181
Once the matrix is removed, apply the light source for 20-30 seconds on the ____
and ____ to ensure curing of the composite margins.
a. Buccal and Occlusal
b. Buccal and Lingual
c. Lingual and Occlusal - ANSWER-b. Buccal and Lingual
Hottel p. 182
Which of the following is NOT an advantage to consider with composite resin?
a. Relatively inexpensive
, b. Easily repaired
c. Fracture resistance
d. Technique sensitive - ANSWER-d. Technique sensitive
Hottel p. 175
The shade is selected prior to operative procedures because of color changes that
occur in teeth as a result of dehydration during isolation, operative procedures,
and etching.
a. True
b. False - ANSWER-a. True
Hottel p. 177
Thin layers of resin materials ______ withstand occlusal forces. - ANSWER-Cannot
Hottel p. 178
The bonding agent is only placed over the dentin.
a. True
b. False - ANSWER-False
Hottel p. 180
Which typle of composite resin is more difficult to finish?
a. Microfilled
b. Hybrid filler
c. Macrofilled
d. Both A and B - ANSWER-d. All of the above
