Question

Structure of teeth
Thanks

Answer 1

There are three layers:-

Enamel- Harder than bone, uppermost layer
Dentine- Hard but not as hard as enamel. Slightly yellow.
Pulp- Softest, innermost layer full of blood vessels.

Answer 2

Answer :-

The structure of teeth is as follows :-

• The portion of teeth that is exposed, is known as the "Crown".

• The "Crown" is covered with "Enamel".

• Bulk of the teeth us made up of "Dentin".

• The "Root" is, the basal part of the teeth, embedded in the gums.

• The root is surrounded by a layer of cement and "Vascular periodontal membrane", which helps to fix the tooth to the jaw bone.

• Inside the tooth, is a narrow "Pulp cavity" with a "Gelatinous" consistency, which supports the blood vessels inside a tooth.

• The "Pulp cavity" is lined with a layer of "Odontoblasts".

Extra Information :-

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• Enamel is the hardest substance in vertebrate bodies.

• Enamel is richest in calcium salts (about 95% in dry weight).

• Enamel is "Ectodermal" in origin.

• Enamel is produced by "Ameoblasts".

• The element that hardens the tooth enamel, is "Fluorine".

• Dentin is a calcified connective tissue.

• Dentin is harder than bones because of its high content of calcium salts (about 70% of dry weight).

• Dentin is mesodermal in origin.

• Dentin is produced by "Odontoblasts".