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Teeth And Diseases Affecting Your Teeth
Beginning of essay
Teeth are numerous, hard tissue structures in the mouths of humans. In
humans the teeth are composed of nan inner layer of dentin that, above the
gum line, is covered by a layer of enamel. Called the crown, this part of
the tooth is extremely hard. The root portion of the tooth is covered with
a b ....
Middle of essay ....h) and when chewing and grinding food with the back
teeth (molars and premolars). The molars and premolars have large surfaces
with points (called cusps) and grooves so that they fit together extremely
well.
Human teeth are derived from both the mesodem (middle layer) and the
ectoderm (outer layer) of the embryo. The enamel is formed by special cells
called ameloblasts, which are part oenamel-making organs that bud off from
the surface tissue (epithelium) of the mouith. Each organ initially loo.... |
Number of words: 729 |
Approximate pages: 3 |
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