oligodontia


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oligodontia

[ō‚lig·ə′dän·chə]
(medicine)
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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In the present study only three families out of fifteen families have shown oligodontia (more than six teeth missing), all other have hypodontia (less than six teeth missing).
All patients have presented congenitally missing dentition since childhood, and consequently, severe oligodontia, leading to masticatory dysfunction and aesthetic impairment.
[10] made a compilation of 61 Swedish patients with oligodontia whose treatment had been planned in a multidisciplinary team and was finalised.
(2) Oligodontia is defined as congenital absence of 'many' teeth, without any specification as to the meaning of many.
Oligodontia (partial anodontia) denotes a lack of development of 6 or more teeth.
On physical examination at 34 years old she had normal body measurements and thin sparse hair, scalp nodules, without hair over them, low nasal bridge, excess of nasofrontal soft tissue with dystopia canthorum, widely spaced teeth with oligodontia, cupped protruding ears with small tragus and antitragus, absent nipples, partial skin sindactilia of third and fourth fingers and second and third toes--with thin and hypoplastic nails--and camptodactyly of fifth fingers, dry skin, and scanty secondary sexual hair (Figure 1(b)).
In the oral cavity the most striking fea- ture is oligodontia; the condition of missing over 6 teeth or more, excluding 3rd molar.
The majority of MSX1 mutations are autosomal dominant and result in hypodontia and oligodontia, however an autosomal recessive mutation has been identified [Chishti et al., 2006; Nieminen, 2009; Pani, 2011].
The group was able to demonstrate that mutations in the same POLR3A gene localized on chromosome 10 were responsible for three clinically different forms of leukodystrophies: Tremor-Ataxia with Central Hypomyelination (TACH) first described in Quebec cases, Leukodystrophy with Oligodontia (LO), and 4H syndrome or Hypomyelination, Hypodontia and Hypogonadotropic Hypogonadism syndrome.
She had oligodontia. Her eyes and nails were normal.