from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. dentin
from the GNU version of the Collaborative International Dictionary of English
- n. The dense calcified substance of which teeth are largely composed. It contains less animal matter than bone, and in the teeth of man is situated beneath the enamel.
from The Century Dictionary and Cyclopedia
- n. See dentin.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. bone (calcified tissue) surrounding the pulp cavity of a tooth
- n. a calcareous material harder and denser than bone that comprises the bulk of a tooth
Sorry, no etymologies found.
Surrounding the cavity on all sides is the hard substance known as the dentine, or tooth ivory.
Eventually the bacteria can get into the dentine, at which point tooth decay sets in.
Molar enamel thickness and dentine horn height in Gigantopithecus blacki
The combination of evenly distributed occlusal enamel and relatively short dentine horns in G. blacki results in a flat and low-cusped occlusal surface suitable to grinding tough or fibrous food objects.
Seven molars were also virtually sectioned through the mesial cusps and two-dimensional enamel thickness and dentine horn height measurements were recorded.
Gigantopithecus blacki dentine horns are relatively short, similar to (but shorter than) those of Pongo, which in turn are shorter than those of humans and African apes.
It is characterized by bacteria induced progressive destruction of the organic and mineral compounds of the dentine and enamel, the two outer tooth layers.
Most striking, however, were the dental inlays: a shallow hole was drilled into the front face of the tooth enamel using a reed or bone hollow drill and an abrasive such as sand or jade dust, sometimes reaching the dentine within.
When the enamel is worn away, the underlying dentine is exposed, causing discoloration and tooth sensitivity.
Unfortunately, what she didn’t know was that I’m allergic to commercial toothpaste because the dentine in it makes me break out in a rash.