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2. Cementoenamel junction - Wikipedia

   en.wikipedia.org/wiki/Cementoenamel_junction

   There exists a normal variation in the relationship of the cementum and the enamel at the cementoenamel junction. In about 60–65% of teeth, the cementum overlaps the enamel at the CEJ, while in about 30% of teeth, the cementum and enamel abut each other with no overlap. In only 5–10% of teeth, there is a space between the enamel and the ...

3. Crown-to-root ratio - Wikipedia

   en.wikipedia.org/wiki/Crown-to-root_ratio

   Naturally, the cementoenamel junction exists much closer to the incisal or occlusal surface of a tooth than to the tip of the root or roots. Because of this fact, root length is considerably longer than crown length, and this helps allow for proper support of the teeth during normal function, not unlike a tree that has a root system hidden ...

4. Tooth enamel - Wikipedia

   en.wikipedia.org/wiki/Tooth_enamel

   In permanent teeth, the enamel rods near the cementoenamel junction (CEJ) tilt slightly toward the root of the tooth. Understanding enamel orientation is very important in restorative dentistry, because enamel unsupported by underlying dentin is prone to fracture. [10] The area around the enamel rod is known as interrod enamel.

5. Cementum - Wikipedia

   en.wikipedia.org/wiki/Cementum

   The dentinocemental junction (DCJ) is formed because of the apposition of cementum over the dentin. [6] [7] This interface is not as defined, either clinically or histologically, as that of the dentinoenamel junction (DEJ), given that cementum and dentin are of common embryological background, unlike that of enamel and dentin. [3]

6. Abfraction - Wikipedia

   en.wikipedia.org/wiki/Abfraction

   It is suggested that these lesions are caused by forces placed on the teeth during biting, eating, chewing and grinding; the enamel, especially at the cementoenamel junction (CEJ), undergoes large amounts of stress, causing micro fractures and tooth tissue loss. Abfraction appears to be a modern condition, with examples of non-carious cervical ...

7. Gums - Wikipedia

   en.wikipedia.org/wiki/Gums

   The marginal gum varies in width from 0.5 to 2.0 mm from the free gingival crest to the attached gingiva. The marginal gingiva follows the scalloped pattern established by the contour of the cementoenamel junction (CEJ) of the teeth. The marginal gingiva has a more translucent appearance than the attached gingiva, yet has a similar clinical ...