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dentin

noun

den·​tin ˈden-tᵊn How to pronounce dentin (audio)
variants or dentine
: a calcareous material similar to but harder and denser than bone that composes the principal mass of a tooth see tooth illustration
dentinal adjective

Example Sentences

Recent Examples on the Web Shark teeth have dentin, like human teeth, according to the Dental Center of Indiana. Olivia Munson, USA TODAY, 9 Aug. 2022 This cycle of violence was revealed by a second signal in Fred’s tusks, encoded in oxygen isotopes, which tracked the steady sawtooth tick of the seasons passing by and provided a kind of calendar kept in dentin. Peter Brannen, The Atlantic, 22 June 2022 His teeth are chewed down to nubs, the dentin and nerves exposed. Gene Weingarten, Washington Post, 8 Nov. 2021 Once the enamel is dissolved, the underlying portion of the tooth, the dentin, is softer and more easily destroyed by the acid, thus leading to wider and deeper expansion of the cavity. Jeffrey Ebersole, The Conversation, 18 May 2021 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, 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, 1 Aug. 2019 This may eventually compromise the underlying dentin, which is a tissue containing hollow canals called tubules. Korin Miller, SELF, 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, 5 June 2019 See More

Word History

First Known Use

circa 1845, in the meaning defined above

Time Traveler
The first known use of dentin was circa 1845

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