Structure of the tooth Flashcards
1
Q
What is enamel laid down by?
A
Ameloblasts
2
Q
What is the composition of enamel?
A
Apatite - 97%
Organic material 2 %
Water 1%
3
Q
What is dentine laid down by?
A
Odontoblasts
4
Q
What is the composition of dentine?
A
Apatite 70%
Organic collagen 20%
Water 10%
5
Q
What is cementum produced by?
A
Cementoblasts
6
Q
What is the composition of cementum?
A
Inorganic salts - 45%
Organic collagen 30%
Water 25%
7
Q
What does the pulp contain?
A
Blood vessels Lymphatics Connective tissue Defense cells Nerve tissue Inflammatory cells
8
Q
What are the main purposes for the periodontal membrane?
A
Attaches tooth to socket and alveolar bone.
Main shock absorber for tooth
Keeps tooth firm in socket
9
Q
What is the purpose of the alveolar bone?
A
Holds teeth in position
