dentin

noun
den·​tin | \ ˈden-tᵊn How to pronounce dentin (audio) \
variants: or dentine \ ˈden-​ˌtēn How to pronounce dentine (audio) , den-​ˈ \

Definition of dentin

: a calcareous material similar to but harder and denser than bone that composes the principal mass of a tooth — see tooth illustration

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Other Words from dentin

dentinal \ den-​ˈtē-​nᵊl How to pronounce dentinal (audio) , ˈden-​tə-​nəl How to pronounce dentinal (audio) \ adjective

Examples of dentin in a Sentence

Recent Examples on the Web The erosion of enamel can also cause teeth to become more yellow over the long-term, as the yellow-colored dentin, the inner layer of tooth, is exposed. Lisa Drayer, CNN, "Does brushing with salt effectively whiten your teeth? No, but there are safer alternatives," 3 Oct. 2019 According to a case study from the American Academy of Pediatric Dentistry, a compound odontoma is considered a developmental anomaly where tumors made of formed of enamel and dentin are formed. Doha Madani, NBC News, "Doctors remove 526 'tooth-like structures' from 7-year-old boy's mouth," 1 Aug. 2019 This may eventually compromise the underlying dentin, which is a tissue containing hollow canals called tubules. Korin Miller, SELF, "5 Reasons Your Teeth Are So Agonizingly Sensitive," 18 Apr. 2018 Like human teeth, the dragonfish’s teeth have a dense inner dentin layer surrounded by an outer enamellike layer. Helen Santoro, Science | AAAS, "The transparent teeth of this dragonfish evolved for one lethal purpose," 5 June 2019 Relative dentin abrasivity, or RDA, is a guide to measuring abrasiveness in toothpaste. Laura Daily, The Seattle Times, "How charcoal escaped the grill and ended up in your bathroom," 12 Apr. 2019 The thinner the enamel, the more likely the yellowish dentin shows through. Jill U. Adams, chicagotribune.com, "The pros and cons of whitening your teeth," 1 May 2018 That allows bacteria and acids to dig into your dentin, the next, softer layer of your teeth. Korin Miller, SELF, "Is It Actually Possible to Get Rid of Cavities Without Fillings?," 17 Oct. 2018 The thinner the enamel, the more likely the yellowish dentin shows through. Jill U. Adams, chicagotribune.com, "The pros and cons of whitening your teeth," 1 May 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'dentin.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of dentin

circa 1845, in the meaning defined above

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Time Traveler for dentin

Time Traveler

The first known use of dentin was circa 1845

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Statistics for dentin

Cite this Entry

“Dentin.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/dentin. Accessed 30 Oct. 2020.

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More Definitions for dentin

dentin

noun
den·​tin | \ ˈden-tᵊn How to pronounce dentin (audio) \
variants: or dentine \ ˈden-​ˌtēn \

Kids Definition of dentin

: a calcium-containing material that is similar to bone but harder and that makes up the main part of a tooth

dentin

noun
den·​tin | \ ˈdent-ᵊn How to pronounce dentin (audio) \
variants: or dentine \ ˈden-​ˌtēn How to pronounce dentine (audio) , den-​ˈtēn How to pronounce dentine (audio) \

Medical Definition of dentin

: a calcareous material similar to bone but harder and denser that composes the principal mass of a tooth, is formed by the odontoblasts of the surface of the dental papilla, and consists of a matrix containing minute parallel tubules which open into the pulp cavity and during life contain processes of the cells of the pulp — compare cementum, enamel

Other Words from dentin

dentinal \ ˈdent-​ᵊn-​əl; ˈden-​ˌtēn-​ᵊl How to pronounce dentinal (audio) , den-​ˈ How to pronounce dentinal (audio) \ adjective

More from Merriam-Webster on dentin

Britannica.com: Encyclopedia article about dentin

Comments on dentin

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