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The third molar, commonly called wisdom tooth, is the most posterior of the three molars in each quadrant of the human dentition.The age at which wisdom teeth come through is variable, [1] but this generally occurs between late teens and early twenties. [2]
Additionally, the evolution and reduction in the jaw has left little room for the third molar, or wisdom tooth, to form. As a result, many individuals choose to remove them through surgery. One of the defining features among Homo sapiens is the presence of a chin. A protruding chin was absent in archaic hominids, as well as Neanderthals ...
Wisdom teeth are vestigial third molars that human ancestors used to help in grinding down plant tissue. The common postulation is that their skulls had larger jaws with more teeth, which were possibly used to help chew down foliage to compensate for a lack of ability to efficiently digest the cellulose that makes up a plant cell wall.
A treatment controversy exists about the need for and timing of the removal of disease-free impacted wisdom teeth. Supporters of early removal cite the increasing risks for extraction over time and the costs of monitoring the wisdom teeth. Supporters for retaining wisdom teeth cite the risk and cost of unnecessary surgery.
NGF-R is present in the condensing ectomesenchymal cells of the dental papilla in the early cap stage tooth germ [10] and plays multiple roles during morphogenetic and cytodifferentiation events in the tooth. [11] [12] [13] There is a relationship between tooth agenesis and absence of the peripheral trigeminal nerve (see Hypodontia).
On account of its erupting wisdom teeth, Skull 3 was determined to be the skull of a subadult. [4] In 2002, the toothless skull of an old individual, Skull 4 (D3444, the associated jaw, D3900, was discovered in 2003) was discovered. Both Skull 3 and Skull 4 were noted as preserving a series of very primitive characteristics.
There is still some debate about the age of Magdalenian Girl. For years, the individual was thought to be a young girl, because her wisdom teeth had not yet advanced, but new analysis indicates that her wisdom teeth were impacted, and that she was actually 25 to 35 years old when she died. [6] This is the oldest recorded case of impacted wisdom ...
The general trend of jaw and oral cavity shrinkage, as well as dental malocclusion presence, has been observed in burial remains across Eurasia.Analyses of remains from areas thought to be in situ (origin) to agriculture, such as those in the Levant region dated to approximately 12,000 years ago, are thought to be where humans first changed from hunting and gathering to a more agricultural ...
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