from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun The main, calcareous part of a tooth, beneath the enamel and surrounding the pulp chamber and root canals.

from The Century Dictionary.

  • noun The proper substance or tissue of teeth, as ivory, for instance, as distinguised from enamel, cement, or pulp.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun The hard, dense calcareous material that makes up the bulk of a tooth

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun bone (calcified tissue) surrounding the pulp cavity of a tooth
  • noun a calcareous material harder and denser than bone that comprises the bulk of a tooth


Sorry, no etymologies found.


  • Normal dentin is twice as stiff as pinewood, but damaged dentin is more like rubber, which makes it pretty hard to chew with.

    Tooth Regeneration May Replace Drill-and-Fill « Isegoria

  • Underneath that ceramic-like covering, dentin is like hard clay reinforced by fibers of collagen, similar to the way adobe bricks contain clay reinforced by straw fibers.

    Tooth Regeneration May Replace Drill-and-Fill « Isegoria

  • Most of the tooth is made up of dentin, which is located directly below the enamel.


  • As before stated, the first germs of the dentin are the papillæ, corresponding in number to the teeth, formed from the soft mesodermal tissue which bounds the depressions containing the special enamel germs.

    XI. Splanchnology. 2a. The Mouth

  • The lesion doesn't always lead to a full-blown cavity, which entails decay of the layer right beneath the enamel, called dentin.

    The Seattle Times

  • Friction brings into close contact numerous particles of two bodies, and perhaps the electrical action going on more or less all the time through gold fillings (especially when other metals are in the mouth) accounts for a powdered condition of the dentin which is sometimes found under cohesive gold fillings, but not under tin.

    Tin Foil and Its Combinations for Filling Teeth

  • They're made up of dentin which is what you and I have making up our teeth. - Home Page

  • "dentin" tissue beneath it, eventually destroying large parts of the tooth and - when they reach the living pulp at its centre - causing intense pain.

    Snipr/SnipURL - Most interesting snipped URLs

  • Straw-like dentin tubules transmit pain to the tooth's nerve when exposed to heat or cold, acidic soft drinks or bleach in tooth whiteners.

    You have your nerve protected by toothpaste

  • Tooth sensitivity is caused when the dentin layer below the enamel is exposed.

    You have your nerve protected by toothpaste


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