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n. pl. di·a·ste·ma·ta (-mə-tə)
A gap or space between two teeth.

[Late Latin diastēma, interval, from Greek, from diistanai, diastē-, to separate; see diastasis.]

di′a·ste·mat′ic (-stə-măt′ĭk) adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


n, pl -mata (-mətə)
1. (Pathology) an abnormal space, fissure, or cleft in a bodily organ or part
2. (Dentistry) a gap between the teeth
[C19: New Latin, from Greek: gap, from diistanai to separate; see diastasis]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˌdaɪ əˈsti mə)

n., pl. -ma•ta (-mə tə)
a gap between two adjacent teeth.
[1350–1400; Middle English < Late Latin < Greek diástēma interval, derivative (with -ma n. suffix of result) of diïstánai (see diastase)]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.diastema - a gap or vacant space between two teeth
opening, gap - an open or empty space in or between things; "there was a small opening between the trees"; "the explosion made a gap in the wall"
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
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References in periodicals archive ?
The variables considered in the study were: 1) maximum maxillary intercanines width (MaxCW); 2) maximum mandibular intercanines width (ManCW); 3) maximum maxillary between third incisives width (MaxIW); 4) maximum mandibular between third incisives width (ManIW); 5) diastema located between the third right maxillary incisive and the right maxillary canine (C-I-MaxR); 6) diastema located between the third left maxillary incisive and the left maxillary canine (C-I-MaxL); 7) diastema located between the third right mandibular incisive and the right mandibular canine (C-I-ManR); and 8) diastema located between the third left mandibular incisive and the left mandibular canine (C-I-ManL).
(1999) mencionaron que, en su especimen reportado para Chile, estaban separados por un pequeno diastema; sin embargo, en los especimenes analizados los incisivos inferiores se disponen en una linea continua, mientras que entre el I2 y el C si hay un pequeno diastema.
Dental cast analysis show class-II dental relation with large midline diastema and anterior spaces in both affected probands.
His central gap (a diastema, apparently) has gone, his jagged teeth have been smoothed out and the colour is white without being Dulux pure brilliant.
There have been others whose diastema (the official term for a gap between one's teeth) have been a striking element of their look, such as Lauren Hutton and Brigitte Bardot, but Madonna's refusal to have hers "fixed" brought gap teeth -- and the idea of embracing one's uniqueness -- to the mainstream.
Mokhtar et al used photoshopped pictures of a male and female subject.5 They used midline diastema, gummy smile and midline deviation in their altered pictures.
The DAI includes the evaluation of the following conditions: absent incisors, canines and premolars; crowding in incisor region; spacing in incisor region; diastema; largestupper anterior irregularity; largest lower anterior irregularity; anterior maxillary overjet; anterior mandibular overjet; vertical anterior open bite; and antero-posterior molar relation.
It includes parameters of dentofacial anomalies related to the following clinical and aesthetic aspects: the number of visibly absent teeth, anterior crowding, anterior spacing, midline diastema, maxillary anterior misalignment, maxillary anterior horizontal overlap, mandibular anterior horizontal overlap, anterior open bite, antero-posterior molar relation and posterior crossbite.
The lingual frenum shall not produce a diastema between the mandibular central incisors.
Posterior to the four premaxillary teeth there is a diastema as long as the mesiodistal length of an alveolus where the fourth large dentary tooth is accommodated.