Tooth Development Flashcards
What primary embryonic layer is tooth enamel derived from?
The ectoderm
What are all parts of the teeth (apart from enamel) and surrounding structure derived from?
The ectomesenchyme
What is the ectomesenchyme part of?
The neural crest
What are the 3 primary embryonic layers?
Ectoderm
Mesoderm
Endoderm
Where is the neural crest? What can it also be called?
Between the ectoderm and neural tube.
Also called the ectomesenchyme.
What is the 4th cell type that forms between the ectoderm and neural tube?
The neural crest / ectomesenchyme
What embryonic layer forms the primitive nervous system?
The ectoderm
What does neural crest tissue migrate to form?
The face and jaw structures
What are the 5 stages of tooth formation?
- Initiation
- Morphogenesis
- Cytodifferentiation
- Matrix secretion
- Root formation
At what stage does the bud phase occur?
What is the bud phase?
Morphogenesis
When the dental lamina thickens in one area to form the enamel organ
What is the cap phase?
During which stage does it occur?
When the enamel organ forms a cap over the papilla and changes shape from bud to cap.
Occurs during morphogenesis.
What forms the cervical region in a later stage of tooth development?
The cervical loop
Which cells form the dental papilla?
Ectomesenchymal cells
What surrounds the dental papilla?
The dental follicle
What 2 epithelium meet at the cervical loop?
External enamel and internal enamel epithelium
