Crown, Root and Neck:
The tooth has two anatomical parts, the crown and the root.
The crown is the top part that is exposed and visible above the gum (gingiva).
It is covered with enamel, which protects the underlying dentine.
The root of a tooth descends below the gum line anchoring the tooth in the mouth..
The gingiva surrounds the teeth at the base of their crown.
The alveolar ridges are trabecular bone containing sockets for the teeth.
The periodontium consists of the tissues that support the teeth—the gingiva, epithelial attachment, connective tissue attachment, periodontal ligament, and alveolar bone..
Structure of the Tooth
A tooth consists of enamel, dentin, cementum and pulp tissue.
The portion of a tooth exposed to the oral cavity is known as the dental crown, and the portion below the dental crown is known as the tooth root..
Adults have more teeth than children; most adults have 32 teeth.
Among these teeth are 8 incisors, 4 canines, 8 premolars, and 12 molars (including 4 wisdom teeth).
Most people have a complete set of permanent teeth by the time they enter their teenage..
