PA EFDA Exam Prep Questions and
Answers 100% Pass
Cingulum - ✔✔a bulge or prominence of enamel found on the cervical third of the
lingual surface of an anterior tooth.
Cusp - ✔✔a major developmental convexity on or near the occlusal surface of a
posterior tooth.
Cusp Of Carabelli - ✔✔The fifth cusp, located on the mesial-lingual surface of many
maxillary first molars. #3 and #14
Fossa - ✔✔irregular depressions or concavities on the surface of anterior and posterior
teeth
Central Fossa - ✔✔the depression or concavity found in the central portion of the
occlusal surface of molars
Ridge - ✔✔The linear elevation on the surface of a tooth.
Marginal Ridge - ✔✔The rounded boarder of enamel that forms the mesial and distal
boundaries of the occlusal surface of molars and premolars.
Triangular Ridge - ✔✔a ridge on a molar or premolar that descends from the tips of the
cusp towards the central part of the occlusal surface.
Transverse Ridge - ✔✔the ridge formed by two triangular ridges that extend across the
surface of posterior teeth.
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,Oblique Ridge - ✔✔Ridge crossing the occlusal surface of only maxillary molars in an
oblique direction
major fossae - ✔✔4
lingual Fossa
Central Fossa
Mesial and Distal triangular fossa
Lingual Fossa - ✔✔depression or concavity found on the lingual surface of mandibular
and maxillary incisors located between the mesial and distal marginal ridges
Triangular Fossa - ✔✔located on the occlusal surface of the molars and premolars distal
to the mesial marginal ridge and mesial to the distal marginal ridge
Triangular Fossa - ✔✔are always bordered by three developmental ridges one of which
is the marginal ridge named according by there location
Developmental Grooves - ✔✔major grooves or lines between the ridges of a tooth
named according to there location
Supplemental groove - ✔✔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
Spillway - ✔✔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
Spillway - ✔✔provides an escape for food from the occlusal surface during the
mastication process
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, Pit - ✔✔a small pin point depression located at the junction of developmental grooves
at the termination of those grooves.
Fissure - ✔✔developmental or supplemental grooves with incomplete closure of enamel
an explorer may catch or stick because the incomplete closure of the enamel
Wall - ✔✔a vertical or horizontal surface within cavity preparation named for the
surfaces toward which it faces or for a structure it approximates
Cavosurface - ✔✔the uncut tooth structure adjacent to the cavity preparation.
Line angle - ✔✔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
Point angle - ✔✔A point formed by the junction of three walls within a cavity
preparation and named according to the three Walls involved
Retentive features - ✔✔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
Mamelons - ✔✔Three bulges on the inside so edge of the newly irrupt it essential
incisor which usually disappear from attrition
Cingulum - ✔✔A convex area on the lingual surface of anterior teeth near the gingiva
Furcation - ✔✔The dividing point of a multi rooted tooth
Mesial - ✔✔The surface towards the midline
Distal - ✔✔The surface away from the midline
Labial - ✔✔The outside surface which is towards the lips
Lingual - ✔✔The inside surface which is toward the tongue
© EMILY CHARLENE YEAR 2025-2026, ALL RIGHTS RESERVED 3
Answers 100% Pass
Cingulum - ✔✔a bulge or prominence of enamel found on the cervical third of the
lingual surface of an anterior tooth.
Cusp - ✔✔a major developmental convexity on or near the occlusal surface of a
posterior tooth.
Cusp Of Carabelli - ✔✔The fifth cusp, located on the mesial-lingual surface of many
maxillary first molars. #3 and #14
Fossa - ✔✔irregular depressions or concavities on the surface of anterior and posterior
teeth
Central Fossa - ✔✔the depression or concavity found in the central portion of the
occlusal surface of molars
Ridge - ✔✔The linear elevation on the surface of a tooth.
Marginal Ridge - ✔✔The rounded boarder of enamel that forms the mesial and distal
boundaries of the occlusal surface of molars and premolars.
Triangular Ridge - ✔✔a ridge on a molar or premolar that descends from the tips of the
cusp towards the central part of the occlusal surface.
Transverse Ridge - ✔✔the ridge formed by two triangular ridges that extend across the
surface of posterior teeth.
© EMILY CHARLENE YEAR 2025-2026, ALL RIGHTS RESERVED 1
,Oblique Ridge - ✔✔Ridge crossing the occlusal surface of only maxillary molars in an
oblique direction
major fossae - ✔✔4
lingual Fossa
Central Fossa
Mesial and Distal triangular fossa
Lingual Fossa - ✔✔depression or concavity found on the lingual surface of mandibular
and maxillary incisors located between the mesial and distal marginal ridges
Triangular Fossa - ✔✔located on the occlusal surface of the molars and premolars distal
to the mesial marginal ridge and mesial to the distal marginal ridge
Triangular Fossa - ✔✔are always bordered by three developmental ridges one of which
is the marginal ridge named according by there location
Developmental Grooves - ✔✔major grooves or lines between the ridges of a tooth
named according to there location
Supplemental groove - ✔✔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
Spillway - ✔✔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
Spillway - ✔✔provides an escape for food from the occlusal surface during the
mastication process
© EMILY CHARLENE YEAR 2025-2026, ALL RIGHTS RESERVED 2
, Pit - ✔✔a small pin point depression located at the junction of developmental grooves
at the termination of those grooves.
Fissure - ✔✔developmental or supplemental grooves with incomplete closure of enamel
an explorer may catch or stick because the incomplete closure of the enamel
Wall - ✔✔a vertical or horizontal surface within cavity preparation named for the
surfaces toward which it faces or for a structure it approximates
Cavosurface - ✔✔the uncut tooth structure adjacent to the cavity preparation.
Line angle - ✔✔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
Point angle - ✔✔A point formed by the junction of three walls within a cavity
preparation and named according to the three Walls involved
Retentive features - ✔✔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
Mamelons - ✔✔Three bulges on the inside so edge of the newly irrupt it essential
incisor which usually disappear from attrition
Cingulum - ✔✔A convex area on the lingual surface of anterior teeth near the gingiva
Furcation - ✔✔The dividing point of a multi rooted tooth
Mesial - ✔✔The surface towards the midline
Distal - ✔✔The surface away from the midline
Labial - ✔✔The outside surface which is towards the lips
Lingual - ✔✔The inside surface which is toward the tongue
© EMILY CHARLENE YEAR 2025-2026, ALL RIGHTS RESERVED 3
