Visual Dictionary Online


Powered by

cross section of a molar [1]click to hear

Teeth are formed of two main parts: the crown (the visible protruding part) and one or several roots (the part inserted into the maxilla).
cross section of a molar [1] enamel crown neck cementum root alveolar bone plexus of nerves apex maxillary bone gum

enamel click to hear

Highly mineralized tissue covering and protecting the dentin of the crown; it is the hardest tissue in the organism.

crown click to hear

Part of the tooth covered with enamel and protruding outside the gum.

neck click to hear

Narrow part of the tooth surrounded by the gum separating the crown from the root.

cementum click to hear

Hard mineralized tissue comparable to bone covering and protecting the dentin of the root.

root click to hear

Part of the tooth covered with cementum, and implanted into the dental alveolus of the maxilla; certain teeth, such as the molars, have several roots.

alveolar bone click to hear

Section of the maxilla bone surrounding the dental alveola; its presence depends on the presence of teeth: it forms and disappears when they do.

plexus of nerves click to hear

Grouping of blood vessels and nerves that enters the pulp through the apical foramen to nourish the tooth.

apex click to hear

Terminal part of the dental root whose opening (apical foramen) allows blood vessels and nerves to pass through.

maxillary bone click to hear

Jawbone into which the teeth are inserted.

gum click to hear

Thick section of the mucous membrane of the mouth that is rich in blood vessels and nerves; it covers the edge of the dental alveolus and adheres to the neck.