EFDA REVIEW PRACTICE EXAM
QUESTIONS WITH DETAILED VERIFIED
ANSWERS
An overextension (flash) @ the cavosurface margin is
indicated by:
1. a space btwn the restoration + the enamel wall
2. a catch as the explorer moves from moves from tooth
to amalgam
3. a catch as the explorer moves from amalgam to tooth
4. a catch as the explorer is moved in both directions -
correct answer- 2. a catch as the explorer moves
from moves from tooth to amalgam
An undercontoured class V restoration:
1. will displace the gingival from its normal position
2. is caused by not removing enough of the restorative
material
3. will increase plaque accumulation + recurrent decay
,4. is acceptable - correct answer- 3. will
increase plaque accumulation + recurrent decay
Basic remediable intraoral tasks and/or procedures
include all of the following except:
1. impressions for diagnostic models or mouthguard
2. suture removal
3. placement of gingival retraction cord prior to direction
impression
4. placement of surgical dressings - correct
answer- 3. placement of gingival retraction cord
prior to direction impression
Cavity preparations with rotary instruments generate
cutting debris, some of which is compacted in a layer onto
the dentinal surface. That layer of material is known as:
1. wet dentin
2. smear layer
3. peritubular dentin
4. collagen fibril network - correct answer- 2.
smear layer
, Dentin is normally yellowish-white and darker than
enamel. The composition of dentin is approximately:
1. 90% inorganic material, 2.0% organic material, 8%
water
2. 95.5% inorganic material, 0.5% organic material, 4%
water
3. 70% inorganic material, 20% organic material, 10%
water
4. 85% inorganic material, 1.0% organic material, 10%
water - correct answer- 3. 70% inorganic
material, 20% organic material, 10% water
How will adequate condensation pressure strengthen the
final restoration?
1. by eliminating voids + reducing excess mercury
2. by reducing excess mercury only
3. by decreasing the contraction
4. by increasing expansion - correct answer- 1.
by eliminating voids + reducing excess mercury
QUESTIONS WITH DETAILED VERIFIED
ANSWERS
An overextension (flash) @ the cavosurface margin is
indicated by:
1. a space btwn the restoration + the enamel wall
2. a catch as the explorer moves from moves from tooth
to amalgam
3. a catch as the explorer moves from amalgam to tooth
4. a catch as the explorer is moved in both directions -
correct answer- 2. a catch as the explorer moves
from moves from tooth to amalgam
An undercontoured class V restoration:
1. will displace the gingival from its normal position
2. is caused by not removing enough of the restorative
material
3. will increase plaque accumulation + recurrent decay
,4. is acceptable - correct answer- 3. will
increase plaque accumulation + recurrent decay
Basic remediable intraoral tasks and/or procedures
include all of the following except:
1. impressions for diagnostic models or mouthguard
2. suture removal
3. placement of gingival retraction cord prior to direction
impression
4. placement of surgical dressings - correct
answer- 3. placement of gingival retraction cord
prior to direction impression
Cavity preparations with rotary instruments generate
cutting debris, some of which is compacted in a layer onto
the dentinal surface. That layer of material is known as:
1. wet dentin
2. smear layer
3. peritubular dentin
4. collagen fibril network - correct answer- 2.
smear layer
, Dentin is normally yellowish-white and darker than
enamel. The composition of dentin is approximately:
1. 90% inorganic material, 2.0% organic material, 8%
water
2. 95.5% inorganic material, 0.5% organic material, 4%
water
3. 70% inorganic material, 20% organic material, 10%
water
4. 85% inorganic material, 1.0% organic material, 10%
water - correct answer- 3. 70% inorganic
material, 20% organic material, 10% water
How will adequate condensation pressure strengthen the
final restoration?
1. by eliminating voids + reducing excess mercury
2. by reducing excess mercury only
3. by decreasing the contraction
4. by increasing expansion - correct answer- 1.
by eliminating voids + reducing excess mercury
