AAPD QE Board Exam (2025 LATEST UPDATE) |
Complete Exam Questions and WELL-DEFINED
Answers|| grade A+
What layer do neural crest cells develop from? -CORRECTANSWER Ectoderm
At what embryonic age does the dental lamina begin to develop? -CORRECTANSWER
6 weeks
What are the three components of the tooth bud? -CORRECTANSWER Enamel Organ
Dental papilla
Dental sac
What are the three morphologic stages of a developing tooth bud? -
CORRECTANSWER Bud stage
Cap stage
Bell stage
During the bell stage invagination of the epithelium occurs, which layer is essential for
enamel production? -CORRECTANSWER Stratum intermedium
Which cells does the stellate reticulum support and protect? -CORRECTANSWER
Ameloblasts
,What do remnants of Hertwig's epithelial root sheath persist as? -CORRECTANSWER
Rests of Malassez
What is the origin of the dental papilla? -CORRECTANSWER Neural crest cells
What does the dental papilla differentiate in to? -CORRECTANSWER Dentin and
primordium of pulp
What are enamel pearls? -CORRECTANSWER Cells of epithelial root sheath that
remain attached to dentin. Differentiate into ameloblasts and produce enamel
What are the 7 steps (in order) of histophyisological differentiation of a tooth bud? -
CORRECTANSWER Initiation
Proliferation
Histodifferentiation
Morphodifferentiation
Apposition
Mineralization
Maturation
During which stage of tooth development may problems that lead to anomalies of tooth
number occur? -CORRECTANSWER Initiation
,Which three stages of tooth development encompasses the bud, cap, early bell and late
bell? -CORRECTANSWER Proliferation
Histodifferentiation
Morphodifferentiation
Disruptions of proliferation may result in what type of tooth anomalies? (4) -
CORRECTANSWER Size
Proportion
Numbers
Twinning
Which stage of tooth development may lead to anomalies of the enamel, dentin, and
cementum? -CORRECTANSWER Morphodifferentiation
What is the incidence of hyperdontia? Males vs females? -CORRECTANSWER 0.3 -
3%
Males 2:1 females
Is hyperdontia more common in maxilla or mandible? More common in primary teeth or
permanent teeth? -CORRECTANSWER Maxilla 90%
Permanent dentition 5x more common that primary
, Which permanent teeth are most frequently missing? List in order from most to least
common -CORRECTANSWER Third molars
Mandibular second pre molars
Maxillary lateral incisors
Maxillary second pre molars
Name 9 syndromes that may be associated with supernumerary teeth -
CORRECTANSWER Apert
Cleidocranial dysplasia
Gardner syndrome
Crouzon syndrome
Sturge Weber syndrome
Orofacialdigital Syndrome I
Hallermann-Strieff Syndrome - A
Cleft lip and palate
Down syndrome
Which syndrome is associated with shovel shaped incisors?
A. Sturge Weber Syndrome
B. Cleidocranial dysplasia
C. Apert syndrome
D. Hallermann Strieff Syndrome-A -CORRECTANSWER C. Apert Syndrome
Complete Exam Questions and WELL-DEFINED
Answers|| grade A+
What layer do neural crest cells develop from? -CORRECTANSWER Ectoderm
At what embryonic age does the dental lamina begin to develop? -CORRECTANSWER
6 weeks
What are the three components of the tooth bud? -CORRECTANSWER Enamel Organ
Dental papilla
Dental sac
What are the three morphologic stages of a developing tooth bud? -
CORRECTANSWER Bud stage
Cap stage
Bell stage
During the bell stage invagination of the epithelium occurs, which layer is essential for
enamel production? -CORRECTANSWER Stratum intermedium
Which cells does the stellate reticulum support and protect? -CORRECTANSWER
Ameloblasts
,What do remnants of Hertwig's epithelial root sheath persist as? -CORRECTANSWER
Rests of Malassez
What is the origin of the dental papilla? -CORRECTANSWER Neural crest cells
What does the dental papilla differentiate in to? -CORRECTANSWER Dentin and
primordium of pulp
What are enamel pearls? -CORRECTANSWER Cells of epithelial root sheath that
remain attached to dentin. Differentiate into ameloblasts and produce enamel
What are the 7 steps (in order) of histophyisological differentiation of a tooth bud? -
CORRECTANSWER Initiation
Proliferation
Histodifferentiation
Morphodifferentiation
Apposition
Mineralization
Maturation
During which stage of tooth development may problems that lead to anomalies of tooth
number occur? -CORRECTANSWER Initiation
,Which three stages of tooth development encompasses the bud, cap, early bell and late
bell? -CORRECTANSWER Proliferation
Histodifferentiation
Morphodifferentiation
Disruptions of proliferation may result in what type of tooth anomalies? (4) -
CORRECTANSWER Size
Proportion
Numbers
Twinning
Which stage of tooth development may lead to anomalies of the enamel, dentin, and
cementum? -CORRECTANSWER Morphodifferentiation
What is the incidence of hyperdontia? Males vs females? -CORRECTANSWER 0.3 -
3%
Males 2:1 females
Is hyperdontia more common in maxilla or mandible? More common in primary teeth or
permanent teeth? -CORRECTANSWER Maxilla 90%
Permanent dentition 5x more common that primary
, Which permanent teeth are most frequently missing? List in order from most to least
common -CORRECTANSWER Third molars
Mandibular second pre molars
Maxillary lateral incisors
Maxillary second pre molars
Name 9 syndromes that may be associated with supernumerary teeth -
CORRECTANSWER Apert
Cleidocranial dysplasia
Gardner syndrome
Crouzon syndrome
Sturge Weber syndrome
Orofacialdigital Syndrome I
Hallermann-Strieff Syndrome - A
Cleft lip and palate
Down syndrome
Which syndrome is associated with shovel shaped incisors?
A. Sturge Weber Syndrome
B. Cleidocranial dysplasia
C. Apert syndrome
D. Hallermann Strieff Syndrome-A -CORRECTANSWER C. Apert Syndrome
