Internal tooth anatomy
and tooth structure
TOOTH TISSUES
  TOOTH ENAMEL (1), is the hardest of the parts of the tooth and also the hardest of all the tissues of human body.
Tooth enamel is a protective tooth structure that covers the exposed part of a tooth, the crown.
DENTIN (2)
or IVORY, is the tissue below the tooth enamel that forms the main mass of a tooth. It
supports the tooth enamel and absorbs the pressure of eating. The dentine consists of a number of micro-fibers imbedded in a dense homogeneous matrix of collagenous proteins.
DENTAL PULP (3) , a soft connective tissue containing nerves and blood vessels, that nourish the tooth.
It is the most internal structure of a tooth, surrounded by the dentine.
Dental pulp is found in the soft center of the tooth, inside the pulp chamber and the root canal.
CEMENTUM (4) , is the part of tooth anatomy that covers the dentine outside of the root (under the gum line) and it is attached to the bone of the jaw with little
elastic fibers. Cementum is hard as bone but not as hard as the tooth enamel. | |
Structure and function of periodontium
PERIODONTAL TISSUES
PERIODONTIUM
is the supporting structure of a tooth. Periodontium is the complex of soft and hard tissues
that surround the tooth, keep it in place, feed and protect it.
GUMS (5) ,
the tough pink-colored tissue that covers the bone of the jaw and
supports the tooth structure inside the alveolar bone.
PERIODONTAL LIGAMENT (6) , the
tissue between the cementum and the alveolar bone. It consists
of tough little elastic fibers that keep the tooth attached to
the jaw.
ALVEOLAR BONE (7) ,
the bone of the jaw that keeps the tooth in its place,
it feeds and protects it.
The internal tooth structure is common in all types of teeth, but the external teeth parts morphology (shape of tooth crown, number and shape of roots)
differs significantly between different teeth types.
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