7/10/25, 4:57 PM EFDA review practice exam
EFDA BOARD PRACTICE EXAM REVIEW 2025-2026
\COMPLETE 400 QUESTIONS AND CORRECT DETAILED
ANSWERS \ASSURED PASS ALREADUY GRADED A+
\LATEST UPDATE
On a tooth with extensive 3. anatomical + clinical crown
gingival recession below the
CEJ, which of the following
would be visible?
1. anatomical crown
2. clinical crown
3. anatomical + clinical crown
4. anatomical + clinical root
Which of the following 1. the oral hard + soft tissues that support the teeth
statements most accurately
describes the periodontium?
1. the oral hard + soft tissues
that support the teeth
2. enamel + cementum
located on the exterior
surfaces of the teeth
3. soft tissue that is loosely
attached to the underlying
bone
4. cuff of tissue that is not
attached to the tooth
When would an open 2. whenever the gingival margin of the proximal box is deeper
sandwich technique with GI than ideal
be recommended?
1. whenever a metal matrix
band is used
2. whenever the gingival
margin of the proximal
box is deeper than
ideal
1/5
3
,7/10/25, 4:57 PM EFDA review practice exam
3. it is recommended with
every class II composite
restoration
4. when the proximal
box is wider
buccolingually than
ideal
Which of the following 3. zinc phosphate cement
materials should not be
placed directly on dentin
d/t the
irritation it may cause to the
tooth?
1. copal varnish
2. GI
3. zinc phosphate cement
4. calcium hydroxide
Which of the following 4. GI bonds chemically and mechanically to dentin
statements is true regarding
GI?
1. GI is more abrasion-
resistant than
amalgam
2. GI is more moisture-
sensitive than
composite
3. GI provides better
esthetics than
composite
4. GI bonds chemically and
mechanically to dentin
Tooth #19 MODB RUC is to 3. slightly higher occlusally than the neighboring cusp of the
be restored with amalgam. adjacent tooth
The overfill on the distal +
distobuccal cusps should
be:
1. equal to the cavosurface
margin
2. to the desired final
2/5
3
,7/10/25, 4:57 PM EFDA review practice exam
height of the
restoration
3. slightly higher occlusally
than the
neighboring cusp of the
adjacent tooth
4. slightly shorter than
desired final height of
restoration
Dentin is normally yellowish- 3. 70% inorganic material, 20% organic material, 10% water
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
This embrasure is located 3. occlusal
btwn the
marginal ridge + contact area
and can be formed by a
sickle explorer in soft
amalgam @ a 45deg angle:
1. facial
2. lingual
3. occlusal
4. gingival
An overextension (flash) @ 2. a catch as the explorer moves from moves from tooth to
the cavosurface margin is amalgam
indicated by:
1. a space btwn the restoration
+ the enamel wall
2. a catch as the explorer
moves from moves
3/5
3
, 7/10/25, 4:57 PM EFDA review practice exam
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
Which of the teeth in the 3. mandibular first molar
mouth is the largest
with 5 functional
cusps?
1. mandibular second molar
2. maxillary first molar
3. mandibular first molar
4. all mandibular molars
4/5
3
EFDA BOARD PRACTICE EXAM REVIEW 2025-2026
\COMPLETE 400 QUESTIONS AND CORRECT DETAILED
ANSWERS \ASSURED PASS ALREADUY GRADED A+
\LATEST UPDATE
On a tooth with extensive 3. anatomical + clinical crown
gingival recession below the
CEJ, which of the following
would be visible?
1. anatomical crown
2. clinical crown
3. anatomical + clinical crown
4. anatomical + clinical root
Which of the following 1. the oral hard + soft tissues that support the teeth
statements most accurately
describes the periodontium?
1. the oral hard + soft tissues
that support the teeth
2. enamel + cementum
located on the exterior
surfaces of the teeth
3. soft tissue that is loosely
attached to the underlying
bone
4. cuff of tissue that is not
attached to the tooth
When would an open 2. whenever the gingival margin of the proximal box is deeper
sandwich technique with GI than ideal
be recommended?
1. whenever a metal matrix
band is used
2. whenever the gingival
margin of the proximal
box is deeper than
ideal
1/5
3
,7/10/25, 4:57 PM EFDA review practice exam
3. it is recommended with
every class II composite
restoration
4. when the proximal
box is wider
buccolingually than
ideal
Which of the following 3. zinc phosphate cement
materials should not be
placed directly on dentin
d/t the
irritation it may cause to the
tooth?
1. copal varnish
2. GI
3. zinc phosphate cement
4. calcium hydroxide
Which of the following 4. GI bonds chemically and mechanically to dentin
statements is true regarding
GI?
1. GI is more abrasion-
resistant than
amalgam
2. GI is more moisture-
sensitive than
composite
3. GI provides better
esthetics than
composite
4. GI bonds chemically and
mechanically to dentin
Tooth #19 MODB RUC is to 3. slightly higher occlusally than the neighboring cusp of the
be restored with amalgam. adjacent tooth
The overfill on the distal +
distobuccal cusps should
be:
1. equal to the cavosurface
margin
2. to the desired final
2/5
3
,7/10/25, 4:57 PM EFDA review practice exam
height of the
restoration
3. slightly higher occlusally
than the
neighboring cusp of the
adjacent tooth
4. slightly shorter than
desired final height of
restoration
Dentin is normally yellowish- 3. 70% inorganic material, 20% organic material, 10% water
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
This embrasure is located 3. occlusal
btwn the
marginal ridge + contact area
and can be formed by a
sickle explorer in soft
amalgam @ a 45deg angle:
1. facial
2. lingual
3. occlusal
4. gingival
An overextension (flash) @ 2. a catch as the explorer moves from moves from tooth to
the cavosurface margin is amalgam
indicated by:
1. a space btwn the restoration
+ the enamel wall
2. a catch as the explorer
moves from moves
3/5
3
, 7/10/25, 4:57 PM EFDA review practice exam
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
Which of the teeth in the 3. mandibular first molar
mouth is the largest
with 5 functional
cusps?
1. mandibular second molar
2. maxillary first molar
3. mandibular first molar
4. all mandibular molars
4/5
3
