Tooth (section of a molar): hard organ composed of dentine and enamel, used for biting and for chewing food.
Enamel: hard substance covering the crown of a tooth.
Blood vessels and nerves: blood vessel: tube through which blood circulates. Nerve: conductive strand that transmits nerve impulses to the brain.
Gum: mucous membrane that surrounds the root of the tooth and covers the maxillary periosteum.
Pulp cavity: tube in the root of a tooth.
Maxillary bone: bony part of the jaw.
Dentin: hard, elastic substance of a tooth.
Periodontium: tissue that supports the tooth.
Cementum: tissue that covers the root of a tooth.
Alveolar bone: bone into which the teeth are set.
Root: part of the tooth implanted in the gum.
Neck: division between the crown and root of a tooth.
Crown: visible part of a tooth.