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  2. Diastema - Wikipedia

    en.wikipedia.org/wiki/Diastema

    More colloquially, the condition may be referred to as gap teeth or tooth gap. In humans, the term is most commonly applied to an open space between the upper incisors (front teeth). It happens when there is an unequal relationship between the size of the teeth and the jaw. Diastemata are common for children and can exist in adult teeth as well.

  3. Toothcomb - Wikipedia

    en.wikipedia.org/wiki/Toothcomb

    The toothcomb of most lemuriforms includes six finely spaced teeth, four incisors and two canine teeth that are procumbent (tilt forward) in the front of the mouth. [4] [15] The procumbent lower canine teeth are the same shape as the incisors located between them, [15] but they are more robust and curve upward and inward, more so than the incisors. [13]

  4. Occlusion (dentistry) - Wikipedia

    en.wikipedia.org/wiki/Occlusion_(dentistry)

    This effect is greatest in the anterior (front) teeth and can be seen from around age 4 – 5 years. [6] This spacing is important as it allows space for the permanent (adult) teeth to erupt into the correct occlusion, and without this spacing there is likely to be crowding of the permanent dentition.

  5. Terry-Thomas sign - Wikipedia

    en.wikipedia.org/wiki/Terry-Thomas_sign

    The resulting separation between the scaphoid and lunate bones leaves a space on the x-ray that is similar to the gap comedian Terry-Thomas had between his front teeth. For newer radiology students who do not know who Terry-Thomas was, this finding might also be known as the David Letterman sign.

  6. Maxillary central incisor - Wikipedia

    en.wikipedia.org/wiki/Maxillary_central_incisor

    When space exists between the contacts of the maxillary central incisors, the condition is referred to as a diastema or "gap tooth." One frequent cause of the space is the presence of a large labial frenum from the upper lip extending near the teeth. Treatment depends upon the cause and extent of the gap.

  7. Palatal expansion - Wikipedia

    en.wikipedia.org/wiki/Palatal_expansion

    Diastema – Space between upper front two teeth; Fenestration of buccal bone [13] Compression of periodontal ligament near posterior teeth; Extrusion of posterior teeth; Increased lingual bone thickness, decreased buccal bone thickness [13] One of the limits of expansion is the zygomatic buttress. It is known that this anatomical bony complex ...

  8. Dilaceration - Wikipedia

    en.wikipedia.org/wiki/Dilaceration

    In the human mouth, once the permanent teeth begin to develop, they remain underneath the primary teeth. Once they are ready to erupt they push upward eventually causing the primary teeth to fall out. There is essentially a small space between the permanent and primary teeth, roughly less than 3mm of spacing. [5]

  9. Posselt's envelope of motion - Wikipedia

    en.wikipedia.org/wiki/Posselt's_Envelope_of_Motion

    Edge-to-edge articulation is when opposing front teeth meet along their incisal edges when teeth are in maximal intercuspal position. [16] In Posselt's envelope this happens in ICP as the incisors of the mandible slide past the cingulum of the upper incisors to meet the biting edge and continue to maintain tooth contact as mandible protrudes ...