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Odontogenisis and developmental anomalies
BY:
Mennat Allah Alkaram
Under supervision of:
Professor Nagwa Khattab
Odontogenesis (tooth development)
stages of tooth development:
 Proliferation
 Apposition stage
 Morphodefrintiation
 Histodeffrentiation
 Initiation stage
Dental
Developmental
Anomalies
Extent
Structur
e
Morpholo
gy
Size
Cause
Count
Color
Extent
Structur
e
Morpholo
gy
Size
Cause
Count
Color
Localized defect
Generalized defect
Extent
Strcture
Morpholo
gy
Size
Cause
Count
Color
Localized enamel
hypoplasia
Generalized enamel hypoplasia
Chronologic enamel
hypoplasia
Extent
Strcture
Morpholo
gy
Size
Cause
Count
Color
Amelogenesis Imperfecta:
hypoplastic
Amelogenesis Imperfecta:
hypocalcefication
Extent
Structur
e
Morpholo
gy
Size
Cause
Count
Color
Dentinogenesis imperfecta
Dentinal Dysplasia
Extent
Strcture
Morpholo
gy
Size
Cause
Count
Color
Hypercementosis
Extent
Structur
e
Morpholo
gy
Size
Cause
Count
Color a) Invagination (dens in
dente)
b) Evagination (talon cusp)
c) Gemination
d) Fusion
e) Peg lateral
f ) Hutchinson incisors
g) Mulberry molar
h) Supplemental tooth
i) Odontome
j) Concrecense
k) Dilaceration
l) Taurodontism
Extent
Structur
e
Morpholo
gy
Size
Cause
Count
Color
Invagination Evagination
Talon casp
Extent
Structur
e
Morpholo
gy
Size
Cause
Count
Color
Peg shaped latral
Fusion Gimination
Extent
Structur
e
Morpholo
gy
Size
Cause
Count
Color
Compound
odontom
Concrecense
Dilaceration
Taurodontism
Extent
Structur
e
Morpholo
gy
Size
Cause
Count
Color
Mulberry molars
Hutchinson's incisors
Extent
Structur
e
Morpholo
gy
Size
01
Cause
Count
Color
a) Macrodontia: When tooth size is larger than
the normal range
b) Microdontia: When tooth size is smaller
than the normal range
c) Short roots: When root growth does not
reach the normal limit
Extent
Structur
e
Morpholo
gy
Size
01
Cause
Count
Color
Macrodontia
Short roots
Microdontia
Extent
Structur
e
Morpholo
gy
Size
Cause
Count
Color Genetic:
such as a syndromes as ectodermal dysplasia; amelogenesis
imperfecta.
Congenital:
There are instances when a child’s tooth development is
affected by events during pregnancy or at birth.
Acquired:
These cases are affected by environmental factors example,
fluorosis defects or isolated enamel, and dentine hypoplasias in
permanent teeth caused by infections involving primary teeth,
such as in Turner’s hypoplasia.
Extent
Structur
e
Morpholo
gy
Size
Cause
Count
Color Hypodontia
a) Hypodont: one to four missing teeth
b) Oligodont: more than four missing
teeth
c) Anodont: total missing teeth
Hyperdontia
a) Mesiodens: Maxillary Midline
super numerary
b) Paramolar: supernumerary of molar
region
c) Multiple extra teeth
Extent
Structur
e
Morpholo
gy
Size
Cause
Count
Color
Hypodontia
Oligodontia
Anodontia
Extent
Structur
e
Morpholo
gy
Size
Cause
Count
Color
Mesiodense Multiple extra teeth:
As neonatal teeth
Paramolar
Extent
Structur
e
Morpholo
gy
Size
Cause
Count
Color
Bilary atresia
Tetracycline stain
Oral iron syrup intake
Flurosis
Odontogenesis and its related anomiles.pptx

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Odontogenesis and its related anomiles.pptx