AAPD Remembered Exam Latest 2025 Questions
and Answers Graded A+|Assured Success
Name 6 diseases associated with taurodontism. - CORRECT ANSWERKlinefelter
syndrome, tricho-dento-osseous syndrome, Mohr syndrome (aka orofaciodigital syndrome II),
ectodermal dysplasia, Down syndrome, amelogenesis imperfecta type IV
Describe the features of Klinefelter syndrome. - CORRECT ANSWERtaurodontism, small
cranial dimension, bimaxillary prognathism, male with extra X chromosome, gynecomastia
Describe the features of tricho-dento-osseous syndrome. - CORRECT
ANSWERDolichocephalic with frontal bossing, taurodontism, delayed eruption, kinky or
coarse hair at birth, enamel hypoplasia, AI+taurodontism+nail and hair defects
,Describe the features of Mohr syndrome. - CORRECT ANSWERLobed tongue, upper
lip/midline cleft, oligodontia, polydactyly
The most common type of amelogenesis imperfecta is : - CORRECT ANSWERtype I-
hypoplastic
What type of amelogenesis imperfecta is associated with taurodontism? - CORRECT
ANSWERAI type IV with taurodontism (hypomaturation-hypoplastic)
Dentinogenesis imperfecta is a defect of what structure? - CORRECT ANSWERPredentin
matrix (normal mantle dentin)
Which type of Dentinogenesis imperfecta occurs along with osteogenesis imperfecta? -
CORRECT ANSWERShields Type I
Describe Shields Type I dentinogenesis imperfecta. - CORRECT ANSWEROccurs with
osteogenesis imperfecta, primary teeth more severely affected, permanent first molars and
central incisors most often affected, amber translucence, periapical radiolucencies without
caries, autosomal dominant, rapid attrition
Describe Shields type II dentinogenesis imperfecta - CORRECT ANSWERno OI, hereditary
opalescent dentin, both primary and permanent dentitions equally affected, periapical
radiolucencies, rapid attrition, pulp chamber obliteration, autosomal dominant
Describe Shields Type III dentinogenesis imperfecta. - CORRECT ANSWERbell-shaped
crowns, "shell teeth", short roots, enlarged pulp chambers, enamel pitting, rare, pulp exposures
What type of osteogenesis imperfecta is the most common? - CORRECT ANSWEROI
type I
,What type of osteogenesis imperfecta is lethal in the perinatal period? - CORRECT
ANSWEROI type II
What types of amelogenesis imperfecta are most commonly associated with dentinogenesis
imperfecta? - CORRECT ANSWERTypes III and IV
Describe the features of osteogenesis imperfecta. - CORRECT ANSWERbone fractures,
bowing of legs, blue sclera, bitemporal bossing, loose ligaments, impaired hearing,
macrocephaly, autosomal dominant, may be treated with bisphosponates, capillary fragility,
cardiac defects
Name some systemic causes of acquired enamel hypoplasia. - CORRECT
ANSWERDeficient vitamin A, C, D, calcium, phosphate; infection of rubella, syphilis,
cytomegalovirus, radiation, fluorosis, Celiac disease
In infants, what is the best indicator for future caries? - CORRECT ANSWERplaque on
maxillary anteriors
A pea-sized amount of fluoridated toothpaste is appropriate for what age range? -
CORRECT ANSWERage 2-5
In a child under the age of 3, what factors automatically assign that child an S-ECC status? -
CORRECT ANSWERWhite spot lesions, any carious lesion on a smooth surface
Name 7 factors that assign a high caries risk to a 0-5 year old. - CORRECT ANSWER1)
Mother/caregiver with active caries; 2) Parent/caregiver low SES; 3) greater than three
between-meal sugar-containing snacks or beverages per day; 4) Child is put to bed with a bottle
containing natural or added sugar; 5) child has greater than 1 DMFS; 6) Child has active white
spot lesions or enamel defects; 7) Child has elevated MS levels
, Name 3 factors that assign a moderate caries risk to a 0-5 year old. - CORRECT
ANSWER1) Child has special health care needs; 2) Child is a recent immigrant; 3) Child has
plaque on teeth
Name the 4 caries protective factors. - CORRECT ANSWER1) Child receives optimally-
fluoridated drinking water or fluoride supplements; 2) Child has teeth brushed daily with
fluoridated toothpaste; 3) Child receives topical fluoride from health professional; 4) Child has
dental home/regular dental care
Neural crest cells develop from ________. Name some structures that neural crests are
responsible for forming. - CORRECT ANSWER1) ectoderm on the lateral border of the
neural plate. 2) bone, cartilage, dentin, dermis (not enamel)
Dental lamina begins formation at _______ embryonic age. - CORRECT ANSWER6 weeks
From what structure does dental lamina form? - CORRECT ANSWERbasal layer of oral
epithelium
What structures form from dental lamina? - CORRECT ANSWERtooth buds
At what age does the permanent first molar begin initiation? At what age does the permanent
2nd molar begin initiation? - CORRECT ANSWER1) 16 weeks in utero 2) 4-5 years
Name the components of the tooth bud. - CORRECT ANSWERenamel organ, dental
papilla, dental sac
Name the components of the enamel organ. - CORRECT ANSWERInner enamel
epithelium (concavity), outer enamel epithelium (convexity), stellate reticulum (center)
The dental papilla forms from ________. - CORRECT ANSWERneural crest
and Answers Graded A+|Assured Success
Name 6 diseases associated with taurodontism. - CORRECT ANSWERKlinefelter
syndrome, tricho-dento-osseous syndrome, Mohr syndrome (aka orofaciodigital syndrome II),
ectodermal dysplasia, Down syndrome, amelogenesis imperfecta type IV
Describe the features of Klinefelter syndrome. - CORRECT ANSWERtaurodontism, small
cranial dimension, bimaxillary prognathism, male with extra X chromosome, gynecomastia
Describe the features of tricho-dento-osseous syndrome. - CORRECT
ANSWERDolichocephalic with frontal bossing, taurodontism, delayed eruption, kinky or
coarse hair at birth, enamel hypoplasia, AI+taurodontism+nail and hair defects
,Describe the features of Mohr syndrome. - CORRECT ANSWERLobed tongue, upper
lip/midline cleft, oligodontia, polydactyly
The most common type of amelogenesis imperfecta is : - CORRECT ANSWERtype I-
hypoplastic
What type of amelogenesis imperfecta is associated with taurodontism? - CORRECT
ANSWERAI type IV with taurodontism (hypomaturation-hypoplastic)
Dentinogenesis imperfecta is a defect of what structure? - CORRECT ANSWERPredentin
matrix (normal mantle dentin)
Which type of Dentinogenesis imperfecta occurs along with osteogenesis imperfecta? -
CORRECT ANSWERShields Type I
Describe Shields Type I dentinogenesis imperfecta. - CORRECT ANSWEROccurs with
osteogenesis imperfecta, primary teeth more severely affected, permanent first molars and
central incisors most often affected, amber translucence, periapical radiolucencies without
caries, autosomal dominant, rapid attrition
Describe Shields type II dentinogenesis imperfecta - CORRECT ANSWERno OI, hereditary
opalescent dentin, both primary and permanent dentitions equally affected, periapical
radiolucencies, rapid attrition, pulp chamber obliteration, autosomal dominant
Describe Shields Type III dentinogenesis imperfecta. - CORRECT ANSWERbell-shaped
crowns, "shell teeth", short roots, enlarged pulp chambers, enamel pitting, rare, pulp exposures
What type of osteogenesis imperfecta is the most common? - CORRECT ANSWEROI
type I
,What type of osteogenesis imperfecta is lethal in the perinatal period? - CORRECT
ANSWEROI type II
What types of amelogenesis imperfecta are most commonly associated with dentinogenesis
imperfecta? - CORRECT ANSWERTypes III and IV
Describe the features of osteogenesis imperfecta. - CORRECT ANSWERbone fractures,
bowing of legs, blue sclera, bitemporal bossing, loose ligaments, impaired hearing,
macrocephaly, autosomal dominant, may be treated with bisphosponates, capillary fragility,
cardiac defects
Name some systemic causes of acquired enamel hypoplasia. - CORRECT
ANSWERDeficient vitamin A, C, D, calcium, phosphate; infection of rubella, syphilis,
cytomegalovirus, radiation, fluorosis, Celiac disease
In infants, what is the best indicator for future caries? - CORRECT ANSWERplaque on
maxillary anteriors
A pea-sized amount of fluoridated toothpaste is appropriate for what age range? -
CORRECT ANSWERage 2-5
In a child under the age of 3, what factors automatically assign that child an S-ECC status? -
CORRECT ANSWERWhite spot lesions, any carious lesion on a smooth surface
Name 7 factors that assign a high caries risk to a 0-5 year old. - CORRECT ANSWER1)
Mother/caregiver with active caries; 2) Parent/caregiver low SES; 3) greater than three
between-meal sugar-containing snacks or beverages per day; 4) Child is put to bed with a bottle
containing natural or added sugar; 5) child has greater than 1 DMFS; 6) Child has active white
spot lesions or enamel defects; 7) Child has elevated MS levels
, Name 3 factors that assign a moderate caries risk to a 0-5 year old. - CORRECT
ANSWER1) Child has special health care needs; 2) Child is a recent immigrant; 3) Child has
plaque on teeth
Name the 4 caries protective factors. - CORRECT ANSWER1) Child receives optimally-
fluoridated drinking water or fluoride supplements; 2) Child has teeth brushed daily with
fluoridated toothpaste; 3) Child receives topical fluoride from health professional; 4) Child has
dental home/regular dental care
Neural crest cells develop from ________. Name some structures that neural crests are
responsible for forming. - CORRECT ANSWER1) ectoderm on the lateral border of the
neural plate. 2) bone, cartilage, dentin, dermis (not enamel)
Dental lamina begins formation at _______ embryonic age. - CORRECT ANSWER6 weeks
From what structure does dental lamina form? - CORRECT ANSWERbasal layer of oral
epithelium
What structures form from dental lamina? - CORRECT ANSWERtooth buds
At what age does the permanent first molar begin initiation? At what age does the permanent
2nd molar begin initiation? - CORRECT ANSWER1) 16 weeks in utero 2) 4-5 years
Name the components of the tooth bud. - CORRECT ANSWERenamel organ, dental
papilla, dental sac
Name the components of the enamel organ. - CORRECT ANSWERInner enamel
epithelium (concavity), outer enamel epithelium (convexity), stellate reticulum (center)
The dental papilla forms from ________. - CORRECT ANSWERneural crest
