Dental anomalies III

Question 1

Enamel defects? (2)

Answer 1

Genetic: Amelogenesis imperfecta
Environmental: local or systemic flourosis

Question 2

Dentin defects? (3)

Answer 2

Genetic: Dentinogenesis imperfecta, dentinal dysplasia

Environmental: local or systemic

Question 3

Enamel and dentin defects?

Answer 3

Odontodysplasia

Question 4

Molar incisor hypomineraliztion etiology?

Answer 4

Hereditary and environmental

Question 5

amelogenesis imperfecta etiology?

Answer 5

Failure of ameloblasts to differentiate: brownish appearance of the teeth
(or yellow, brown)

Question 6

Amelogenesis imperfecta histopathology? (4)

Answer 6

• Thin or soft enamel and often absent
• Irregular distribution of prisms
• Variations in mineralization
• Most obvious lesions in the incisal region and cusps of molars