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  2. Molar (tooth) - Wikipedia

    en.wikipedia.org/wiki/Molar_(tooth)

    In humans, the molar teeth have either four or five cusps. Adult humans have 12 molars, in four groups of three at the back of the mouth. The third, rearmost molar in each group is called a wisdom tooth. It is the last tooth to appear, breaking through the front of the gum at about the age of 20, although this varies among individuals and ...

  3. Dental anatomy - Wikipedia

    en.wikipedia.org/wiki/Dental_anatomy

    The mandibular second molar is the tooth located distally from both the mandibular first molars of the mouth but mesially from both mandibular third molars. This is true only in permanent teeth. In deciduous teeth, the mandibular second molar is the last tooth in the mouth and does not have a third molar behind it.

  4. Human tooth - Wikipedia

    en.wikipedia.org/wiki/Human_tooth

    Bottom teeth of a seven-year-old, showing primary teeth (left), a lost primary tooth (middle), and a permanent tooth (right) Tooth eruption in humans is a process in tooth development in which the teeth enter the mouth and become visible. Current research indicates that the periodontal ligaments play an important role in tooth eruption. Primary ...

  5. Premolar - Wikipedia

    en.wikipedia.org/wiki/Premolar

    The premolars, also called premolar teeth, or bicuspids, are transitional teeth located between the canine and molar teeth. In humans, there are two premolars per quadrant in the permanent set of teeth, making eight premolars total in the mouth. [1] [2] [3] They have at least two cusps.

  6. Dental arch - Wikipedia

    en.wikipedia.org/wiki/Dental_arch

    The dental arches are the two arches (crescent arrangements) of teeth, one on each jaw, that together constitute the dentition.In humans and many other species, the superior (maxillary or upper) dental arch is a little larger than the inferior (mandibular or lower) arch, so that in the normal condition the teeth in the maxilla (upper jaw) slightly overlap those of the mandible (lower jaw) both ...

  7. Dentition - Wikipedia

    en.wikipedia.org/wiki/Dentition

    Teeth are numbered starting at 1 in each group. Thus the human teeth are I1, I2, C1, P3, P4, M1, M2, and M3. [12] (See next paragraph for premolar naming etymology.) In humans, the third molar is known as the wisdom tooth, whether or not it has erupted. [13]

  8. Incisor - Wikipedia

    en.wikipedia.org/wiki/Incisor

    The permanent teeth of a human, viewed from the right. Details; ... Apart from the first molars, ... called "peg teeth", is located directly behind the most anterior ...

  9. Cusp (anatomy) - Wikipedia

    en.wikipedia.org/wiki/Cusp_(anatomy)

    Molars normally possess either four or five cusps. In certain populations the maxillary molars, especially first molars, will possess a fifth cusp situated on the mesiolingual cusp known as the Cusp of Carabelli. One other variation of the upper first premolar is the 'Uto-Aztecan' upper premolar.