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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 ...
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.
The incisors and cheek teeth of rabbits are called aradicular hypsodont teeth. Aradicular teeth never form a true root with an apex, and hypsodont teeth have a high crown to root ratio (providing more room for wear and tear). [4] This is sometimes referred to as an elodont dentition, meaning ever-growing. These teeth grow or erupt continuously.
- 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.
Lagomorphs and rodents form the clade or grandorder Glires. Despite the evolutionary relationship between lagomorphs and rodents, the two orders have some major differences. Lagomorphs have four incisors in the upper jaw (smaller peg teeth behind larger incisors), whereas rodents only have two. They are similar to rodents in that their incisors ...
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 ...
Diastema is a genus of flowering plant in the family Gesneriaceae containing approximately 20 species ranging from Mexico to Bolivia and Venezuela. [2] Species