Oral Biology Flashcards

1
Q

Embryology (germ layer)

Where does enamel arise from

A

Ectoderm

All other tooth structures arise from ectomesenchyme (neural crest)

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2
Q

Embryology

Stomodaeum

A

Embryonic mouth

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3
Q

Embryology

Dental Lamina

A
  • 7 weeks
  • PEB developed into vestibular lamina and dental lamina
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4
Q

Embryology

Cap Stage

A
  • 11 weeks
  • formation of IEE and EEE
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5
Q

Embryology

Bud Stage

A
  • 8 - 10 weeks
  • dental papilla appears
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6
Q

Embryology

Bell Stage

A
  • 14 weeks
  • Stellate reticlum and stratum intermedium
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7
Q

Embryology

Late Bell Stage

A
  • 18 weeks
  • Formation of dentine and enamel begins
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8
Q

Embryology

Predentine

A

unmineralised dentine

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9
Q

Embryology

Amelogenesis

A
  1. ameloblasts elongate
  2. nucleus migratets to basal end of cell
  3. become secretory cells
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10
Q

Embryology

HERS

A

Induces formation of root dentine

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11
Q

Embryology

Debris of Malassez

A

Debris of HERS following intial layer of root dentine

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