PA EFDA Exam Prep
Comprehensive Questions
(Frequently Tested) with
Verified Answers Graded A+
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.
,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.
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
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.
Comprehensive Questions
(Frequently Tested) with
Verified Answers Graded A+
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.
,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.
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
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.
