PATHOLOGY

Detailed explanation-1: -Hard calcified tissue covering the dentin in the crown of tooth. Because it contains no living cells, tooth enamel cannot repair damage from decay or from wear. Only a dentist can correct these conditions. Anatomical Crown.

Detailed explanation-2: -Dentine is a composite structure formed of 30% organic matrix, consisting mainly of type-I collagen, 50% inorganic reinforcing phase of carbonated apatite and 20% dentinal fluid similar to blood plasma.

Detailed explanation-3: -Unlike enamel, the dentine and the pulp (which are treated together, because the dentine develops from the pulp) are living tissues, with cells, blood vessels, and nerves.