1
PA EFDA Exam | 2025 Newest Actual
Exam | Complete Questions & Verified
Correct Detailed Answers | Expanded
Function Dental Assistant
Cingulum - (ANSWER)a bulge or prominence of enamel found on the cervical
third of the lingual surface of an anterior tooth.
Cusp - (ANSWER)a major developmental convexity on or near the occlusal surface
of a posterior tooth.
Cusp - (ANSWER)Found on the incisal edges of canines,
Cusp - (ANSWER)a premolar usually has two of these on the buccal and lingual
surfaces.Mandibular second premolar may sometimes have three of these.
Cusp Of Carabelli - (ANSWER)Only found on the maxillary first molars
Cusp of Carabelli - (ANSWER)only found on tooth #3 and #14
Cusp of Carabelli - (ANSWER)The fifth cusp, located on the mesial-lingual surface
of many maxillary first molars.
, 2
Cusp - (ANSWER)Maxillary first and second molars and mandibular second molars
usually have four of these
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
Marginal Ridge - (ANSWER)the mesial and distal boundaries of the lingual
surfaces of incisors and cuspids.
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.
, 3
Oblique Ridge - (ANSWER)Ridge crossing the occlusal surface of only maxillary
molars in an oblique direction
How many major fossa's are there - (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
, 4
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 - (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
PA EFDA Exam | 2025 Newest Actual
Exam | Complete Questions & Verified
Correct Detailed Answers | Expanded
Function Dental Assistant
Cingulum - (ANSWER)a bulge or prominence of enamel found on the cervical
third of the lingual surface of an anterior tooth.
Cusp - (ANSWER)a major developmental convexity on or near the occlusal surface
of a posterior tooth.
Cusp - (ANSWER)Found on the incisal edges of canines,
Cusp - (ANSWER)a premolar usually has two of these on the buccal and lingual
surfaces.Mandibular second premolar may sometimes have three of these.
Cusp Of Carabelli - (ANSWER)Only found on the maxillary first molars
Cusp of Carabelli - (ANSWER)only found on tooth #3 and #14
Cusp of Carabelli - (ANSWER)The fifth cusp, located on the mesial-lingual surface
of many maxillary first molars.
, 2
Cusp - (ANSWER)Maxillary first and second molars and mandibular second molars
usually have four of these
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
Marginal Ridge - (ANSWER)the mesial and distal boundaries of the lingual
surfaces of incisors and cuspids.
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.
, 3
Oblique Ridge - (ANSWER)Ridge crossing the occlusal surface of only maxillary
molars in an oblique direction
How many major fossa's are there - (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
, 4
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 - (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
