PA EFDA EXAM SCRIPT UPDATED
COMPLETE QUESTIONS AND VERIFIED
ANSWERS
●● Cusp
Answer: a major developmental convexity on or near the occlusal
surface of a posterior tooth.
●● Cusp Of Carabelli
Answer: The fifth cusp, located on the mesial-lingual surface of many
maxillary first molars. #3 and #14
●● Fossa
Answer: irregular depressions or concavities on the surface of anterior
and posterior teeth
●● Central Fossa
Answer: the depression or concavity found in the central portion of the
occlusal surface of molars
●● Ridge
Answer: The linear elevation on the surface of a tooth.
,●● Marginal Ridge
Answer: The rounded boarder of enamel that forms the mesial and distal
boundaries of the occlusal surface of molars and premolars.
●● 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.
●● Transverse Ridge
Answer: the ridge formed by two triangular ridges that extend across the
surface of posterior teeth.
●● Oblique Ridge
Answer: Ridge crossing the occlusal surface of only maxillary molars in
an oblique direction
●● major fossae
Answer: 4
lingual Fossa
Central Fossa
Mesial and Distal triangular fossa
●● Lingual Fossa
,Answer: depression or concavity found on the lingual surface of
mandibular and maxillary incisors located between the mesial and distal
marginal ridges
●● 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
●● Triangular Fossa
Answer: are always bordered by three developmental ridges one of
which is the marginal ridge named according by there location
●● Developmental Grooves
Answer: major grooves or lines between the ridges of a tooth named
according to there location
●● 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
●● 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
●● Spillway
Answer: provides an escape for food from the occlusal surface during
the mastication process
●● Pit
Answer: a small pin point depression located at the junction of
developmental grooves at the termination of those grooves.
●● Fissure
Answer: developmental or supplemental grooves with incomplete
closure of enamel an explorer may catch or stick because the incomplete
closure of the enamel
●● Wall
Answer: a vertical or horizontal surface within cavity preparation named
for the surfaces toward which it faces or for a structure it approximates
●● Cavosurface
Answer: the uncut tooth structure adjacent to the cavity preparation.
●● Line angle
COMPLETE QUESTIONS AND VERIFIED
ANSWERS
●● Cusp
Answer: a major developmental convexity on or near the occlusal
surface of a posterior tooth.
●● Cusp Of Carabelli
Answer: The fifth cusp, located on the mesial-lingual surface of many
maxillary first molars. #3 and #14
●● Fossa
Answer: irregular depressions or concavities on the surface of anterior
and posterior teeth
●● Central Fossa
Answer: the depression or concavity found in the central portion of the
occlusal surface of molars
●● Ridge
Answer: The linear elevation on the surface of a tooth.
,●● Marginal Ridge
Answer: The rounded boarder of enamel that forms the mesial and distal
boundaries of the occlusal surface of molars and premolars.
●● 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.
●● Transverse Ridge
Answer: the ridge formed by two triangular ridges that extend across the
surface of posterior teeth.
●● Oblique Ridge
Answer: Ridge crossing the occlusal surface of only maxillary molars in
an oblique direction
●● major fossae
Answer: 4
lingual Fossa
Central Fossa
Mesial and Distal triangular fossa
●● Lingual Fossa
,Answer: depression or concavity found on the lingual surface of
mandibular and maxillary incisors located between the mesial and distal
marginal ridges
●● 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
●● Triangular Fossa
Answer: are always bordered by three developmental ridges one of
which is the marginal ridge named according by there location
●● Developmental Grooves
Answer: major grooves or lines between the ridges of a tooth named
according to there location
●● 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
●● 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
●● Spillway
Answer: provides an escape for food from the occlusal surface during
the mastication process
●● Pit
Answer: a small pin point depression located at the junction of
developmental grooves at the termination of those grooves.
●● Fissure
Answer: developmental or supplemental grooves with incomplete
closure of enamel an explorer may catch or stick because the incomplete
closure of the enamel
●● Wall
Answer: a vertical or horizontal surface within cavity preparation named
for the surfaces toward which it faces or for a structure it approximates
●● Cavosurface
Answer: the uncut tooth structure adjacent to the cavity preparation.
●● Line angle
