tooth development 6 Flashcards
1
Q
There are “eruptive” movements which continue to the adjusting tooth:
A
- Over-eruption in response to opposing extraction
- Compensation
2
Q
Active Eruption
A
Bodily movement of the tooth
3
Q
Passive Eruption
A
Uncovering of the tooth by apical gingival migration
4
Q
Primary tooth eruption is a?
A
bloodless eruption
5
Q
Permanent eruptive movement is caused by?
A
Primary tooth exfoliation is permanent
6
Q
Pre-eruptive movement
A
- during tooth development
- teeth move as jaw grows
- successional teeth move from a lingual/palatal position e.g. lower premolars: start lingually and move between the roots of the primary molars (bone remodelling)
7
Q
Balance between?
A
- Eruptive forces
- Resistive forces - overlying tissues
8
Q
What are the eruption theories?
A
Pull - by PDL fibroblasts
Push - hydrostatic pressure
9
Q
Coronal follicle
A
produces factors that regulate osteoclasts and promote bone resorption
10
Q
Apical follicle
A
promotes bone formation
