PA EFDA Board Exam 2025/2026
QUESTIONS AND VERIFIED CORRECT
SOLUTIONS || 100% GUARANTEED PASS
<BRAND NEW VERSION>
1. Removal of calculus, debris, stain, and plaque from teeth - ANSWER ✓ oral
prophylaxis
2. Where on the tooth do you begin to use prophy cup? - ANSWER ✓ gingival
third
3. What is the different between catalyst and a base? - ANSWER ✓ Base-
basic ingredient of material
4. catalyst- increases the rate of chemical reaction (makes it set)
5. Would you use a polymer crown on an anterior tooth? why? - ANSWER ✓
yes, because its tooth colored
6. What is a class I cavity - ANSWER ✓ decay in pits and fissures of occlusal
surface
7. What is a class II cavity - ANSWER ✓ decay on proximal (mesial or distal)
surfaces of premolars and molars
8. What is a class III cavity? - ANSWER ✓ decay in proximal surfaces (Mesial
or distal) of incisors and canines
,9. What is a class IV cavity? - ANSWER ✓ decay in proximal surfaces (mesial
or distal) of incisors and canines and involves the incisal edge or angle of
tooth
10.What is a class V cavity? - ANSWER ✓ decay on the gingival third of facial
or lingual surface of any tooth
11.What is a class VI cavity? - ANSWER ✓ decay on incisal edges of anterior
teeth and the cusp tips of posterior teeth caused by abrasion, wear, or defects
12.Cingulum - ANSWER ✓ a bulge or prominence of enamel found on the
cervical third of the lingual surface of an anterior tooth.
13.Cusp - ANSWER ✓ a major developmental convexity on or near the
occlusal surface of a posterior tooth.
14.Cusp - ANSWER ✓ Found on the incisal edges of canines,
15.Cusp - ANSWER ✓ a premolar usually has two of these on the buccal and
lingual surfaces.Mandibular second premolar may sometimes have three of
these.
16.Cusp Of Carabelli - ANSWER ✓ Only found on the maxillary first molars
17.Cusp of Carabelli - ANSWER ✓ only found on tooth #3 and #14
18.Cusp of Carabelli - ANSWER ✓ The fifth cusp, located on the mesial-
lingual surface of many maxillary first molars.
19.Cusp - ANSWER ✓ Maxillary first and second molars and mandibular
second molars usually have four of these
20.Fossa - ANSWER ✓ irregular depressions or concavities on the surface of
anterior and posterior teeth
21.Central Fossa - ANSWER ✓ the depression or concavity found in the central
portion of the occlusal surface of molars
,22.Ridge - ANSWER ✓ The linear elevation on the surface of a tooth.
23.Marginal Ridge - ANSWER ✓ The rounded boarder of enamel that forms
the mesial and distal boundaries of the occlusal surface of molars and
premolars
24.Marginal Ridge - ANSWER ✓ the mesial and distal boundaries of the
lingual surfaces of incisors and cuspids.
25.Triangular Ridge - ANSWER ✓ a ridge on a molar or premolar that
descends from the tips of the cusp towards the central part of the occlusal
surface.
26.Transverse Ridge - ANSWER ✓ the ridge formed by two triangular ridges
that extend across the surface of posterior teeth.
27.Oblique Ridge - ANSWER ✓ Ridge crossing the occlusal surface of only
maxillary molars in an oblique direction
28.How many major fossa's are there - ANSWER ✓ 4
lingual Fossa
Central Fossa
Mesial and Distal triangular fossa
29.Lingual Fossa - ANSWER ✓ depression or concavity found on the lingual
surface of mandibular and maxillary incisors located between the mesial and
distal marginal ridges
30.Triangular Fossa - ANSWER ✓ located on the occlusal surface of the molars
and premolars distal to the mesial marginal ridge and mesial to the distal
marginal ridge
31.Triangular Fossa - ANSWER ✓ are always bordered by three developmental
ridges one of which is the marginal ridge named according by there location
32.Developmental Grooves - ANSWER ✓ major grooves or lines between the
ridges of a tooth named according to there location
, 33.Supplemental groove - ANSWER ✓ grooves that are less distinct, shallow
linear depression on the surface of teeth and are supplemental to
developmental grooves , do not mark he junction on primary parts of a tooth
34.Spillway - ANSWER ✓ a shallow depression adjacent to a developmental
groove located on the occlusal surface of posterior teeth, originating in the
mesial and distal triangular fossa,and extending over the mesial and distal
marginal ridges towards the buccal and lingual embrasure areas
35.Spillway - ANSWER ✓ provides an escape for food from the occlusal
surface during the mastication process
36.Pit - ANSWER ✓ a small pin point depression located at the junction of
developmental grooves at the termination of those grooves.
37.Fissure - ANSWER ✓ developmental or supplemental grooves with
incomplete closure of enamel an explorer may catch or stick because the
incomplete closure of the enamel
38.Wall - ANSWER ✓ a vertical or horizontal surface within cavity preparation
named for the surfaces toward which it faces or for a structure it
approximates
39.Cavosurface - ANSWER ✓ the uncut tooth structure adjacent to the cavity
preparation.
40.Line angle - ANSWER ✓ A line formed along the junction of two walls or
of one wall and the cavosurface margin and named according to the walls
and services involved
41.Point angle - ANSWER ✓ A point formed by the junction of three walls
within a cavity preparation and named according to the three Walls involved
42.Retentive features - ANSWER ✓ Retentive features Grooves pits or
prepared areas in the Dentin along the line angles or point angles of the
preparation to enhance the mechanical retention of the restorative materials
and named according to their location
QUESTIONS AND VERIFIED CORRECT
SOLUTIONS || 100% GUARANTEED PASS
<BRAND NEW VERSION>
1. Removal of calculus, debris, stain, and plaque from teeth - ANSWER ✓ oral
prophylaxis
2. Where on the tooth do you begin to use prophy cup? - ANSWER ✓ gingival
third
3. What is the different between catalyst and a base? - ANSWER ✓ Base-
basic ingredient of material
4. catalyst- increases the rate of chemical reaction (makes it set)
5. Would you use a polymer crown on an anterior tooth? why? - ANSWER ✓
yes, because its tooth colored
6. What is a class I cavity - ANSWER ✓ decay in pits and fissures of occlusal
surface
7. What is a class II cavity - ANSWER ✓ decay on proximal (mesial or distal)
surfaces of premolars and molars
8. What is a class III cavity? - ANSWER ✓ decay in proximal surfaces (Mesial
or distal) of incisors and canines
,9. What is a class IV cavity? - ANSWER ✓ decay in proximal surfaces (mesial
or distal) of incisors and canines and involves the incisal edge or angle of
tooth
10.What is a class V cavity? - ANSWER ✓ decay on the gingival third of facial
or lingual surface of any tooth
11.What is a class VI cavity? - ANSWER ✓ decay on incisal edges of anterior
teeth and the cusp tips of posterior teeth caused by abrasion, wear, or defects
12.Cingulum - ANSWER ✓ a bulge or prominence of enamel found on the
cervical third of the lingual surface of an anterior tooth.
13.Cusp - ANSWER ✓ a major developmental convexity on or near the
occlusal surface of a posterior tooth.
14.Cusp - ANSWER ✓ Found on the incisal edges of canines,
15.Cusp - ANSWER ✓ a premolar usually has two of these on the buccal and
lingual surfaces.Mandibular second premolar may sometimes have three of
these.
16.Cusp Of Carabelli - ANSWER ✓ Only found on the maxillary first molars
17.Cusp of Carabelli - ANSWER ✓ only found on tooth #3 and #14
18.Cusp of Carabelli - ANSWER ✓ The fifth cusp, located on the mesial-
lingual surface of many maxillary first molars.
19.Cusp - ANSWER ✓ Maxillary first and second molars and mandibular
second molars usually have four of these
20.Fossa - ANSWER ✓ irregular depressions or concavities on the surface of
anterior and posterior teeth
21.Central Fossa - ANSWER ✓ the depression or concavity found in the central
portion of the occlusal surface of molars
,22.Ridge - ANSWER ✓ The linear elevation on the surface of a tooth.
23.Marginal Ridge - ANSWER ✓ The rounded boarder of enamel that forms
the mesial and distal boundaries of the occlusal surface of molars and
premolars
24.Marginal Ridge - ANSWER ✓ the mesial and distal boundaries of the
lingual surfaces of incisors and cuspids.
25.Triangular Ridge - ANSWER ✓ a ridge on a molar or premolar that
descends from the tips of the cusp towards the central part of the occlusal
surface.
26.Transverse Ridge - ANSWER ✓ the ridge formed by two triangular ridges
that extend across the surface of posterior teeth.
27.Oblique Ridge - ANSWER ✓ Ridge crossing the occlusal surface of only
maxillary molars in an oblique direction
28.How many major fossa's are there - ANSWER ✓ 4
lingual Fossa
Central Fossa
Mesial and Distal triangular fossa
29.Lingual Fossa - ANSWER ✓ depression or concavity found on the lingual
surface of mandibular and maxillary incisors located between the mesial and
distal marginal ridges
30.Triangular Fossa - ANSWER ✓ located on the occlusal surface of the molars
and premolars distal to the mesial marginal ridge and mesial to the distal
marginal ridge
31.Triangular Fossa - ANSWER ✓ are always bordered by three developmental
ridges one of which is the marginal ridge named according by there location
32.Developmental Grooves - ANSWER ✓ major grooves or lines between the
ridges of a tooth named according to there location
, 33.Supplemental groove - ANSWER ✓ grooves that are less distinct, shallow
linear depression on the surface of teeth and are supplemental to
developmental grooves , do not mark he junction on primary parts of a tooth
34.Spillway - ANSWER ✓ a shallow depression adjacent to a developmental
groove located on the occlusal surface of posterior teeth, originating in the
mesial and distal triangular fossa,and extending over the mesial and distal
marginal ridges towards the buccal and lingual embrasure areas
35.Spillway - ANSWER ✓ provides an escape for food from the occlusal
surface during the mastication process
36.Pit - ANSWER ✓ a small pin point depression located at the junction of
developmental grooves at the termination of those grooves.
37.Fissure - ANSWER ✓ developmental or supplemental grooves with
incomplete closure of enamel an explorer may catch or stick because the
incomplete closure of the enamel
38.Wall - ANSWER ✓ a vertical or horizontal surface within cavity preparation
named for the surfaces toward which it faces or for a structure it
approximates
39.Cavosurface - ANSWER ✓ the uncut tooth structure adjacent to the cavity
preparation.
40.Line angle - ANSWER ✓ A line formed along the junction of two walls or
of one wall and the cavosurface margin and named according to the walls
and services involved
41.Point angle - ANSWER ✓ A point formed by the junction of three walls
within a cavity preparation and named according to the three Walls involved
42.Retentive features - ANSWER ✓ Retentive features Grooves pits or
prepared areas in the Dentin along the line angles or point angles of the
preparation to enhance the mechanical retention of the restorative materials
and named according to their location
