enamel Flashcards
1
Q
what are the characteristics of enamel?
A
hardest tissue in body, resists abrasion, brittle, thickness varies, translucent, mineralisation increases transparency
2
Q
how is enamel supported?
A
dentine
3
Q
what does enamel cover?
A
tooth crown
4
Q
when does crystallite orientation of enamel rods occur?
A
during enamel formation
5
Q
how are crystallites oriented?
A
deposited at right angles to ameloblast membrane
6
Q
what is the difference between surface enamel and deeper enamel?
A
surface enamel is more mineralised and harder
7
Q
what is the basic unit of enamel?
A
rods
8
Q
where do enamel rods run?
A
from ADJ to surface
9
Q
what is the important component of enamel rods
A
HA
10
Q
what are the contents of enamel
A
HA, water, organic matrix
