Draft:Teeth

From Wikiversity
Jump to navigation Jump to search
These are the teeth of the sea perch, Tautogolabrus adspersus. Credit: Matthieu Godbout.
This is an image of the sea perch Tautogolabrus adspersus. Credit: derekkeats.

Teeth are found in the mouths of humans and many other animals. The word teeth is the plural of the word tooth. Teeth are of various shapes, sizes and lengths.

Normally adult humans have 32 teeth in their mouth which help chew food.

Teeth have a natural coating which is called enamel.

Necessary care needs be excercised while cleaning or brushing them. Teeth in good condition have aesthetic appeal that attracts and pleases viewers.

Theoretical teeth[edit]

The image is a model of a human molar-like tooth. 1. Tooth 2. Enamel 3. Dentin 4. Dental pulp ::5. cameral pulp ::6. root pulp :7. Cementum :8. Crown ::9. Cusp ::10. Sulcus :11. [Cementoenamel junction] Neck :12. Root ::13. Furcation ::14. Root apex :::15. Apical foramen 16. Gingival sulcus
17. Periodontium
 :18. Gingiva: ::19. free or interdental ::20. marginal ::21. alveolar :22. Periodontal ligament :23. Alveolar bone 24. Vessels and nerves: :25. dental :26. periodontal :27. alveolar through alveolar canals. Credit: Jmarchn.

Def. a "hard, calcareous structure present in the mouth of many vertebrate animals, generally used for eating"[1] is called a tooth.

Visuals[edit]

Main source: Visuals
This is a frontal view of the teeth of a human adult male. Credit: David Shankbone.

Teeth of humans are small, calcified, hard, whitish structures found in the mouth. They function in [mastication] mechanically breaking down items of food by cutting and crushing them in preparation for swallowing and digestion. The roots of teeth are embedded in the maxilla (upper jaw) or the mandible (lower jaw) and are covered by [gingiva] gums. Teeth are made of multiple tissues of varying density and hardness.

Prehistory[edit]

Main sources: History/Prehistory and Prehistory
These teeth are from an animal of prehistorical importance. Credit: Nevit Dilmen.

Teeth are a common fossil that occurs in many strata in the history of Draft:rocks on Draft:Earth.

The prehistory period dates from around 7 x 106 b2k to about 7,000 b2k.

Hypotheses[edit]

Main source: Hypotheses
  1. The teeth of Tyrannosaurus rex come from the same gene as those of the sea perch, Tautogolabrus adspersus.

See also[edit]

References[edit]

  1. Lua error in Module:Citation/CS1 at line 3556: bad argument #1 to 'pairs' (table expected, got nil).

External links[edit]

{{Archaeology resources}}