Odontogenesis and its related anomiles

2. Odontogenisis and developmental anomalies
BY:
Mennat Allah Alkaram
Under supervision of:
Professor Nagwa Khattab

3. Odontogenesis (tooth development)

4. stages of tooth development:
 Proliferation
 Apposition stage
 Morphodefrintiation
 Histodeffrentiation
 Initiation stage

5. Dental
Developmental
Anomalies
Extent
Structur
e
Morpholo
gy
Size
Cause
Count
Color

6. Extent
Structur
e
Morpholo
gy
Size
Cause
Count
Color
Localized defect
Generalized defect

7. Extent
Strcture
Morpholo
gy
Size
Cause
Count
Color
Localized enamel
hypoplasia
Generalized enamel hypoplasia
Chronologic enamel
hypoplasia

8. Extent
Strcture
Morpholo
gy
Size
Cause
Count
Color
Amelogenesis Imperfecta:
hypoplastic
Amelogenesis Imperfecta:
hypocalcefication

9. Extent
Structur
e
Morpholo
gy
Size
Cause
Count
Color
Dentinogenesis imperfecta
Dentinal Dysplasia

10. Extent
Strcture
Morpholo
gy
Size
Cause
Count
Color
Hypercementosis

11. 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

12. Extent
Structur
e
Morpholo
gy
Size
Cause
Count
Color
Invagination Evagination
Talon casp

13. Extent
Structur
e
Morpholo
gy
Size
Cause
Count
Color
Peg shaped latral
Fusion Gimination

14. Extent
Structur
e
Morpholo
gy
Size
Cause
Count
Color
Compound
odontom
Concrecense
Dilaceration
Taurodontism

15. Extent
Structur
e
Morpholo
gy
Size
Cause
Count
Color
Mulberry molars
Hutchinson's incisors

16. 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

17. Extent
Structur
e
Morpholo
gy
Size
01
Cause
Count
Color
Macrodontia
Short roots
Microdontia

18. 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.

19. 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

20. Extent
Structur
e
Morpholo
gy
Size
Cause
Count
Color
Hypodontia
Oligodontia
Anodontia

21. Extent
Structur
e
Morpholo
gy
Size
Cause
Count
Color
Mesiodense Multiple extra teeth:
As neonatal teeth
Paramolar

22. Extent
Structur
e
Morpholo
gy
Size
Cause
Count
Color
Bilary atresia
Tetracycline stain
Oral iron syrup intake
Flurosis