Anodontia, Hypodontia and Oligodontia

Anodontia is a genetic disorder characterized by the absence of all teeth due to a failure of development. It is quite rare and is mostly seen in animals affected with other hereditary or genetic conditions. Hypodontia (missing teeth) is genetic in origin and usually involves the absence of from one to six teeth and is also a result of failure of development. Hypodontia are most commonly seen in small dog breeds, and in some larger breeds can be considered a serious fault.

In Kerry Blue Terriers, hypodontia and oligodontia are thought to be inherited which requires comprehensive study of their genetic control. Both anodontia and hypodontia are hereditary and are often associated with ectodermal dysplasia seen in hairless and some other breeds. Oligodontia is a condition in which more than six teeth are missing. It is particularly common in brachycephalic breeds (dogs with shortened muzzles) and may be symmetrical and asymmetrical. The condition is most frequently found among Collies, German Shepherds, Poodles and German Hunting Terriers. It affects the first and third premolar of the upper jaw, followed by the first and second premolar of the lower jaw. In some cases, anodontia and oligondontia occur with no apparent congenital or systemic disease.


Kerry blue terrier

References

  1. Inheritance of hypodontia in Kerry Blue Terrier dogs Aksenovich TI, Zorkaltsov IV, Aulchenko IuS, Kniazev SP, Kulikova AV. In: Genetika. 2004 May;40(5):658-66.
  2. Robert B. Wiggs, Heidi B. Lobprise. Veterinary Dentistry.
  3. Radiological analysis of oligodontia among dogs in Croatia. V Butkovic. In: VETERINARSKI ARHIV 71 (2), 57-63, 2001
  4. Cecilia Gorrel. Veterinary dentistry for the general practitioner.
  5. Robert B. Wiggs, Heidi B. Lobprise. Veterinary Dentistry.

 

 


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