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  2. 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, but this generally occurs between late teens and early twenties. Most adults have four wisdom teeth, one in each of the four quadrants, but it is possible to have none, fewer, or more, in which case the extras are called supernumerary teeth. Wisdom teeth may become stuck and not erupt fully, if there is not enough space for them to come through normally. Impacted wisdom teeth are still sometimes removed for orthodontic treatment, believing that they move the other teeth and cause crowding, though this is no longer held as true.
    The Truth About Wisdom Teeth
    The Truth About Wisdom Teeth
    Wisdom Teeth: Anatomy and Problems
    Wisdom Teeth: Anatomy and Problems
    Overview

    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 (erupt) is variable, but this generally o… See more

    History

    Although formally known as third molars, the common name is wisdom teeth because they appear so late – much later than the other teeth, at an age where people are presumably "wiser" than as a child, whe… See more

    Structure

    Morphology of wisdom teeth can be variable.
    Maxillary (upper) third molars commonly have a triangular crown with a deep central fossa from which multiple irregular fissures originate. T… See more

    Function

    Anthropologists believe human and primate wisdom teeth may help with chewing tougher foods. After the advent of agriculture over 10,000 years ago, and especially with the industrial revolution in recent cent… See more

     
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