EFDA Final Exam Study Guide with
correct answers
Wear resistance of hybrid composites is equal and occasionally superior to the microfill
composite.
a. True
b. False - CORRECT 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 - CORRECT ANSWER-a. Dentin
Hottel p. 178
Composite resin is placed starting at the ______ portion of the cavity (proximal box). -
CORRECT ANSWER-Deepest
Hottel p. 181
Waiting ____ minutes before finishing improves wear rate significantly
a. 15
b. 16
c. 10
d. 12 - CORRECT 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 - CORRECT ANSWER-c. 4 to 6 weeks
Hottel p. 177
Conserving tooth structure is possible with _______ preparations. - CORRECT
ANSWER-Modified
Hottel pg 177
The etched area should exhibit a ______ appearance. - CORRECT ANSWER-Frosted
Hottel pg 179
Occlusal wear can cause what of the opposing teeth? - CORRECT 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 - CORRECT 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 - CORRECT 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 - CORRECT 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 - CORRECT 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 - CORRECT 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 - CORRECT ANSWER-a. True
Hottel p. 177
Thin layers of resin materials ______ withstand occlusal forces. - CORRECT ANSWER-
Cannot
Hottel p. 178
The bonding agent is only placed over the dentin.
a. True
b. False - CORRECT 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 - CORRECT ANSWER-d. All of the above
Hottel p. 182
When selecting your postier composite, what are some advantages to consider>?
a. Low thermal conductivity
b. Absence of mercury
c. Fracture resistance
d. All of the above - CORRECT ANSWER-d. All of the above
Hottel p. 175
Class II restorations being placed without a rubber dam are subject to ______ 4 to 6
weeks after placement.
a. Wear and tear
b. Microleakage
c. Marginal leakage
d. Shrinkage - CORRECT ANSWER-c. Marginal leakage
Hottel p. 177
What should be dispensed immediately prior to its use to preven the evaporation of its
solvent?
a. Acid etch
b. Bonding agent
c. Sealant material
d. Glass ionomer liner - CORRECT ANSWER-b. Bonding agent
Hottel p. 178
correct answers
Wear resistance of hybrid composites is equal and occasionally superior to the microfill
composite.
a. True
b. False - CORRECT 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 - CORRECT ANSWER-a. Dentin
Hottel p. 178
Composite resin is placed starting at the ______ portion of the cavity (proximal box). -
CORRECT ANSWER-Deepest
Hottel p. 181
Waiting ____ minutes before finishing improves wear rate significantly
a. 15
b. 16
c. 10
d. 12 - CORRECT 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 - CORRECT ANSWER-c. 4 to 6 weeks
Hottel p. 177
Conserving tooth structure is possible with _______ preparations. - CORRECT
ANSWER-Modified
Hottel pg 177
The etched area should exhibit a ______ appearance. - CORRECT ANSWER-Frosted
Hottel pg 179
Occlusal wear can cause what of the opposing teeth? - CORRECT 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 - CORRECT 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 - CORRECT 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 - CORRECT 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 - CORRECT 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 - CORRECT 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 - CORRECT ANSWER-a. True
Hottel p. 177
Thin layers of resin materials ______ withstand occlusal forces. - CORRECT ANSWER-
Cannot
Hottel p. 178
The bonding agent is only placed over the dentin.
a. True
b. False - CORRECT 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 - CORRECT ANSWER-d. All of the above
Hottel p. 182
When selecting your postier composite, what are some advantages to consider>?
a. Low thermal conductivity
b. Absence of mercury
c. Fracture resistance
d. All of the above - CORRECT ANSWER-d. All of the above
Hottel p. 175
Class II restorations being placed without a rubber dam are subject to ______ 4 to 6
weeks after placement.
a. Wear and tear
b. Microleakage
c. Marginal leakage
d. Shrinkage - CORRECT ANSWER-c. Marginal leakage
Hottel p. 177
What should be dispensed immediately prior to its use to preven the evaporation of its
solvent?
a. Acid etch
b. Bonding agent
c. Sealant material
d. Glass ionomer liner - CORRECT ANSWER-b. Bonding agent
Hottel p. 178
