Abpd Review Exam With Complete Solutions

ABPD REVIEW EXAM WITH
COMPLETE SOLUTIONS



Weeks at time of initiation? - Correct Answers -6-8

Defect of initiation --> - Correct Answers -Supernumary teeth
Missing (agenesis) of teeth

% of supernumaries that erupt - Correct Answers -25%

Prevalence of supernumary teeth - Correct Answers -0.1-3.8%
LOWER in primary teeth
5x more common in permanent teeth

__% of supernumaries are in the maxilla - Correct Answers -90%

Most common supernumary? - Correct Answers -Mesiodens

Two kinds of supernumary teeth? - Correct Answers -Rudimentary
Supplemental

Syndromes associated with supernumary teeth? - Correct Answers -Hallerman-Streiff
Apert's
Oro-facial-digital syndrome
Cleidocranial Dysplasia
Gardern's
Cleft palate
Sturge Weber

Down syndrome
Crouzons

Incidence of congenital agenesis? - Correct Answers -1.5-10% in Permanenet
(<1% Primary)
(more common than supernum)

Most common congenitally missing tooth - Correct Answers -3rd Molars
Mandibular 2nd premolars
Maxillary Laterals

,Maxillary 2nd Premolars

Syndromes associated with tooth agenesis - Correct Answers -Cleft palate
Ectodermal dysplasia
Downs
Ellis van Crevald (Chondroectodermal dysplasia)
Oro-Facial-Digital
Hallerman-Streiff

Crouzons

Clinical symptoms of Oro-Facial-Digital - Correct Answers -Missing/asymmetry with
digits
Think frenal attachments
Anomalous anterior teeth
Hypoplasia of alar cartilage

Syndromes that manifest as Hypo and Hyperdontia - Correct Answers -Hallerman Streiff
Oro facial digital
Crouzons
Down

Lit: Agenesis of mandibular centrals is also associated with _____ agenesis in males -
Correct Answers -Laterals

Lit: Hyper or hypodontia is associated with delayed dental development? - Correct
Answers -Hypodontia

Proliferation defects - Correct Answers -(Cap stage)
Defects in size
-Fusion
-Gemination
-Macrodontia
-Microdontia

Incidence of both fusion and gemination is? AD/AR/Non hereditary? - Correct Answers -
0.5%
AD

Bell - Histodifferentiation defects -->? - Correct Answers -Amelogenesis Imperfecta
Dentinogenesis Imperfecta

AI Type I vs II - AD? AR? - Correct Answers -Type I - AD
Type II - AR

Advance Bell - Morphogenesis defects --> ? - Correct Answers -Dens in dente

,Dens Evaginatus
Taurodontism
Dilaceration

(Defects in form/shape)

Most common tooth for dens in dente - Correct Answers -Maxillary permanent lateral
incisor

Most common tooth for dens evaginatus - Correct Answers -Common in Max incisors
Laterals 50%
Centrals 30%

(Most in PERM)

Dens evaginatus associated with what syndromes? - Correct Answers -Sturge webber
Rubinstein - Taybi Syndrome

Syndromes associated with Taurodontism? - Correct Answers -Klienfelter's
Ectodermal dysplasia
Down syndrome
Hypotrichosis
Oro-facial-Digital Syndrome
Amelogenesis Imperfecta

Lit: Are missing teeth and/or supernumary teeth assocaited with taurodontism? - Correct
Answers -Missing teeth ARE related
Supernumary are NOT related

Dilaceration is associated with what syndrome? - Correct Answers -Congenital
Ichthyosis

Apposition defects? - Correct Answers -Dentin Dysplasia I
Dentin Dysplasia II
Regional odontodysplasia

DDI/DDII/Regional odontodysplasia - AD/AR/Non hereditary - Correct Answers -DDI -
AD
DDII - AD
Regional Odonto. - Non-Hereditary

Regional Odontodysplasia is associated with what? - Correct Answers -RH factor
incompatibility
Hypophosphatasia
Ectodermal Dysplasia

, Defects in Calcification/Mineralization - Correct Answers -AI Type III (hypocalcified)
Flurosis

Defect in Proliferation: - Correct Answers -Macro
micro
fusion
gemination

Defect in Histodifferentiation - Correct Answers -AI
DI

Defect in morphodifferentiation - Correct Answers -Dens
indente/evag/taurodontism/dilac

Defect in apposiition? - Correct Answers -Dentin dysplasia
Regional odontodysplasia

Dentin dysplasia results from a defect in _______ - Correct Answers -Apposition

Regional odontodysplasia results from a defect in _______ - Correct Answers -
apposition

Dens invaginatus/evag results from a defect in _______ - Correct Answers -
morphodifferentiation

taurodontism results from a defect in _______ - Correct Answers -morphodifferentiation

dilaceraton results from a defect in _______ - Correct Answers -morphodifferentiation

macro/microdontia results from a defect in _______ - Correct Answers -proliferation

fusion/gemination results from a defect in _______ - Correct Answers -proliferation

supernumary/agenesis results from a defect in _______ - Correct Answers -initiation

Bud stage is characterized by - Correct Answers -Proliferation and morphodifferentation

Cap stage is characterized by - Correct Answers -proliferation
morphodiff
histodiff

What stage is the future DEJ outlined? - Correct Answers -Advanced bell stage

The primodia of the permanent bud is seen at which stage? - Correct Answers -Bell
stage