https://wikimd.org/index.php?action=history&feed=atom&title=DentinDentin - Revision history2026-05-11T20:32:09ZRevision history for this page on the wikiMediaWiki 1.44.2https://wikimd.org/index.php?title=Dentin&diff=6317497&oldid=prevPrab: CSV import2025-02-18T04:34:25Z<p>CSV import</p>
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</table>Prabhttps://wikimd.org/index.php?title=Dentin&diff=5218581&oldid=prevPrab: CSV import2024-02-22T15:35:11Z<p>CSV import</p>
<p><b>New page</b></p><div>'''Dentin''' is a calcified tissue of the body, and along with [[enamel]], [[cementum]], and [[pulp]], one of the four major components of [[teeth]]. It is usually covered by enamel on the crown and cementum on the root and surrounds the entire [[pulp]]. <br />
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== Composition ==<br />
Dentin is composed of mineralized [[hydroxyapatite]], which is also found in bones. However, unlike bone, dentin is not resorbed and replaced throughout life. It is derived from the dental papilla of the tooth germ. <br />
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== Structure ==<br />
The structure of dentin can be divided into primary, secondary and tertiary dentin. <br />
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* '''Primary dentin''' is formed before the eruption of the tooth into the oral cavity. <br />
* '''Secondary dentin''' is formed after the tooth has erupted and continues to form throughout life. <br />
* '''Tertiary dentin''' is formed in response to stimuli, such as wear, caries, or trauma, and has a different structure than primary or secondary dentin.<br />
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== Function ==<br />
Dentin transmits the forces of mastication from the teeth to the surrounding [[alveolar bone]]. It also provides a protective barrier for the pulp. <br />
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== Clinical significance ==<br />
Dentin is susceptible to [[dental caries]], which can lead to pulpitis and pulp necrosis. It can also be affected by non-carious processes such as attrition, abrasion, erosion, and abfraction.<br />
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== See also ==<br />
* [[Tooth enamel]]<br />
* [[Tooth development]]<br />
* [[Dental pulp]]<br />
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== References ==<br />
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[[Category:Dental anatomy]]<br />
[[Category:Human head and neck]]<br />
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