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Dentin
| Dentin | |
|---|---|
 Parts of a tooth, including dentin | |
| Details | |
| Identifiers | |
| Latin | dentinum |
| MeSH | D003804 |
| TA98 | A05.1.03.055 |
| TA2 | 937 |
| FMA | 55628 |
| Anatomical terminology | |
Dentin (/ˈdɛntɪn/ DEN-tin) (American English) or dentine (/ˈdɛnˌtiːn/ DEN-teen or /ˌdɛnˈtiːn/ DEN-TEEN) (British English) (Latin: substantia eburnea) is a calcified tissue of the body and, along with enamel, cementum, and pulp, is 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. By volume, 45% of dentin consists of the mineral hydroxyapatite, 33% is organic material, and 22% is water.[1] Yellow in appearance, it greatly affects the color of a tooth due to the translucency of enamel. Dentin, which is less mineralized and less brittle than enamel, is necessary for the support of enamel.[2] Dentin rates approximately 3 on the Mohs scale of mineral hardness.[3] There are two main characteristics which distinguish dentin from enamel: firstly, dentin forms throughout life; secondly, dentin is sensitive[4]: 125 and can become hypersensitive to changes in temperature due to the sensory function of odontoblasts,[5] especially when enamel recedes and dentin channels become exposed.
- ^ Cite error: The named reference
:0was invoked but never defined (see the help page). - ^ Johnson C. "Biology of the Human Dentition". Archived from the original on 30 October 2015. Retrieved 18 July 2007.
- ^ Marshall GW, Marshall SJ, Kinney JH, Balooch M (November 1997). "The dentin substrate: structure and properties related to bonding". Journal of Dentistry. 25 (6): 441–58. doi:10.1016/s0300-5712(96)00065-6. PMID 9604576.
- ^ Berkovits BK, Holland GR, Moxham BJ (2002). Oral Anatomy, Histology and Embryology (3rd ed.). Mosby. ISBN 978-0-7234-3181-7.
- ^ Bernal L, Sotelo-Hitschfeld P, König C, Sinica V, Wyatt A, Winter Z, et al. (March 2021). "Odontoblast TRPC5 channels signal cold pain in teeth". Science Advances. 7 (13): eabf5567. Bibcode:2021SciA....7.5567B. doi:10.1126/sciadv.abf5567. PMC 7997515. PMID 33771873.
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