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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.
The use of an expander is most common in children and adolescents 8–18 years of age. It can also be used in adults, although expansion is more uncomfortable and takes longer in adults. A patient who would rather not wait several months for the end result achieved by a palatal expander may be able to opt for a surgical separation of the maxilla.
Tongue thrusting is a type of orofacial myofunctional disorder, which is defined as habitual resting or thrusting the tongue forward and/or sideways against or between the teeth while swallowing, chewing, resting, or speaking. Abnormal swallowing patterns push the upper teeth forward and away from the upper alveolar processes and cause open bites.
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.
However, a study published by Lagravere et al. [8] in 2010, stated that there was no difference between the bone-borne and tooth-borne expansion devices. Both types of expanders showed similar results and that the greatest changes were seen in the transverse dimension, changes in the vertical and anteroposterior dimensions were negligible.
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 is a genus of flowering plant in the family Gesneriaceae containing approximately 20 species ranging from Mexico to Bolivia and Venezuela. [ 2 ] Species
Treatment and prognosis of macroglossia depends upon its cause, and also upon the severity of the enlargement and symptoms it is causing. No treatment may be required for mild cases or cases with minimal symptoms. Speech therapy may be beneficial, or surgery to reduce the size of the tongue (reduction glossectomy).