This illustration shows
the anatomy of a tooth and gums as well as the supporting structures
that surround a tooth. The left side shows healthy gums and bones
and the right side shows unhealthy supporting structures.
Not all teeth have one root.
For example: the molars on the top arch have three roots, whereas,
the molars on the bottom arch have two roots.
Glossary of Terms:
Blood vessels - carry nutrients to the tooth.
Bone - alveolar bone forms the tooth socket and provides
it with support.
Cementum - the layer of hard bone-like tissue covering
the root of the tooth.
- the line where the enamel and cementum meet.
Dentin - the hard yellow tissue underlying the
enamel and cementum, making up the main bulk of the tooth.
Enamel - the hard, white outer layer of the tooth.
Gingiva - the gum tissue surrounding the tooth.
Ligament - the connective tissue that surrounds
the tooth and connects it to bone.
Nerves - relay signals such as pain to and from
Pulp - located in the center of the tooth, it contains
the arteries, veins and nerves.
Root canal - canal in the root of the tooth where
the nerves and blood vessels travel through.