The
cementoenamel junction, frequently abbreviated as the
CEJ, is an anatomical landmark identified on a
tooth. It is the location where the
enamel, which covers the crown of a tooth, and the
cementum, which covers the root of a tooth, meet. The border created by these two dental tissues has much significance as it is usually the location where the
gingiva attaches to a healthy tooth by fibers called the
gingival fibers.
Active recession of the gingiva reveals the cementoenamel junction in the mouth and is usually a sign of an unhealthy condition.
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