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A space between two types of teeth, as between an incisor and premolar.
(cell and molecular biology)
Modified cytoplasm of the equatorial plane prior to cell division.



an excessive interval or space between teeth in mammals, usually caused by reduction of part of the teeth. In most herbivorous animals the cuspids and sometimes the incisors are reduced. Similar diastemata occur in the upper and lower jaws of rodents, horses, kangaroos, and other animals. In ruminants, diastema occurs only in the lower jaw. In carnivores it takes place without reduction of teeth. One diastema occurs in front of the fangs of the upper jaw (providing space for the lower fangs), and another is behind the lower fangs (allowing room for the upper fangs during biting). In closing the jaws the fangs nest and form a solid closure, preventing lateral motion of the jaw and aiding in the holding of prey.

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References in periodicals archive ?
Bonding magnets on labial or palatal aspect of the teeth, diastema as well as rotations and angulation problems can be corrected.
3 Upper diastema Species Skull depth Nasal length Rostral width length agilis 2.
Until now, 5 of the patients reported on herein have received orthodontic treatment for closure/reduction of the medial diastema and creation of space for lateral incisors in the prosthesis (Fig.
In addition, in some cases, mandibular midline diastema can be caused by a combination of tongue tie and tongue thrusting.
Beauty rears its ugly head, of course: there would be no "Wonderful Tonight" without Pattie's long blonde hair, corn-flower-blue eyes, neoteny (the retention of such juvenile characteristics as large, widely-spaced eyes), and diastema (that adorable little space between the front teeth that drove director Les Blank, for example, so mad he made a film in 1987 called "Gap-Toothed Women" to celebrate it).
This procedure, called diastema, stops food impaction within the front teeth and gums and prevents the need for tooth extraction later in life.
Diastema is a physical feature affecting some humans and notable celebrities.
Horse 1 exhibits distinct 'bone spurs' on the diastema (the gap between the canines and the cheek teeth), whereas horse 3 has a very steep bevel and a distinct dentine/enamel abrasion on the vertical anterior/mesial edge of the second lower premolars (P2) (Bendrey 2007; Anthony & Brown 2011).
The most common pathologic findings associated with a mesiodens are retention of the adjacent incisors, malposition, and diastema.
Muller used small rectangular magnets directly bonded to the labial aspect of the teeth to close diastema without archwires (33).
Diastema between intermediate tooth (itf) and posterior tooth (ptf) wide; diastema between itf and ptf longer than length of ptf.