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A diastema (pl.: diastemata, from Greek διάστημα, 'space') is a space or gap between two teeth. Many species of mammals have diastemata as a normal feature, most commonly between the incisors and molars. More colloquially, the condition may be referred to as gap teeth or tooth gap.
This is an accepted version of this page This is the latest accepted revision, reviewed on 12 February 2025. Order of mammals Rodent Temporal range: Late Paleocene – recent PreꞒ Ꞓ O S D C P T J K Pg N Capybara Springhare Golden-mantled ground squirrel North American beaver House mouse Scientific classification Domain: Eukaryota Kingdom: Animalia Phylum: Chordata Class: Mammalia Mirorder ...
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 ...
- The difference between diastema in terms of (human) dentistry is that it refers almost always to a gap between the upper central incisors. In zoology, diastema means a gap between teeth of dissimilar types, i.e. between the molars and the incisors, as occurs in grass-eating animals or rodents.
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]
Diastema is a genus of flowering plant in the family Gesneriaceae containing approximately 20 species ranging from Mexico to Bolivia and Venezuela. [2] Species
In geology, a diastem is a short interruption in sedimentation with little or no erosion. [1] They can also be described as very short unconformities (more precisely as very short paraconformities). [2]
Precanine teeth are often replaced by a large diastema in therapsids. [5] [10] Kenomagnathus had both precanine teeth and a diastema, which fills the gap between basal synapsids and therapsids to some extent. It reflects what would have been an ongoing transition, which other stem-mammals with diastemata would also have gone through.