Difference between revisions of "Odontodystrophy"
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== Introduction == | == Introduction == | ||
[[Image:enamal-hypoplasia.gif|right|thumb|125px|<small>Enamal (Courtesy of Alun Williams (RVC))<center></center></small>]] | [[Image:enamal-hypoplasia.gif|right|thumb|125px|<small>Enamal (Courtesy of Alun Williams (RVC))<center></center></small>]] | ||
| − | This condition is a consequence of abnormalities occurring during the period of | + | This condition is a consequence of abnormalities occurring during the period of tooth eruption. It involves damage to [[Enamel Organ#Ameloblasts|ameloblasts]] (which form [[Enamel Organ#Enamel|enamel]]) in utero, which upsets permanent incisor formation. The [[Enamel Organ#Enamel|enamel]] is marked by pits and lines etc. |
| − | In ruminants, damage to [[ | + | In ruminants, damage to [[Enamel Organ#Enamel|enamel]] formation is most often caused by fluoride poisoning and is seen in cattle grazing on pasture contaminated by cement works effluent. |
| − | In dogs, hypoplasia may occur following a [[Canine Distemper Virus]] (CDV) infection during tooth development. This is a very severe systemic disease seen early in life or in utero in dogs. | + | In dogs, hypoplasia may occur following a [[Canine Distemper Virus]] (CDV) infection during tooth development. This is a very severe systemic disease seen early in life or in utero in dogs. |
Hypoplasia may also occur in single teeth following damage to the permanent tooth germ, for example if a deciduous tooth is fractured or extracted without care. The damaged ameloblasts will fail to form enamel and abnormalities will be evident. | Hypoplasia may also occur in single teeth following damage to the permanent tooth germ, for example if a deciduous tooth is fractured or extracted without care. The damaged ameloblasts will fail to form enamel and abnormalities will be evident. | ||
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In ruminants, one will see a chalky mottling and yellow brown pitting of the [[:Category:Teeth - Anatomy & Physiology|tooth]], due to enamel hypoplasia. There is usually no difficulty in mastication detected and the animal is clinically well. | In ruminants, one will see a chalky mottling and yellow brown pitting of the [[:Category:Teeth - Anatomy & Physiology|tooth]], due to enamel hypoplasia. There is usually no difficulty in mastication detected and the animal is clinically well. | ||
| − | In dogs, enamel hypoplasia may result in severe discoloration or pitting of a tooth or teeth due to the effect on [[ | + | In dogs, enamel hypoplasia may result in severe discoloration or pitting of a tooth or teeth due to the effect on [[Enamel Organ#Enamel|enamel]] formation. |
== Diagnosis == | == Diagnosis == | ||
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{{Learning | {{Learning | ||
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|flashcards = [[Veterinary Dentistry Q&A 13]] | |flashcards = [[Veterinary Dentistry Q&A 13]] | ||
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{{review}} | {{review}} | ||
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[[Category:Teeth - Degenerative Pathology]] | [[Category:Teeth - Degenerative Pathology]] | ||
[[Category:Dental Diseases - Cattle]][[Category:Dental Diseases - Dog]] | [[Category:Dental Diseases - Cattle]][[Category:Dental Diseases - Dog]] | ||
| − | [[Category:Expert_Review - | + | [[Category:Expert_Review - Small Animal]] |
Revision as of 22:44, 13 October 2011
Introduction
This condition is a consequence of abnormalities occurring during the period of tooth eruption. It involves damage to ameloblasts (which form enamel) in utero, which upsets permanent incisor formation. The enamel is marked by pits and lines etc.
In ruminants, damage to enamel formation is most often caused by fluoride poisoning and is seen in cattle grazing on pasture contaminated by cement works effluent.
In dogs, hypoplasia may occur following a Canine Distemper Virus (CDV) infection during tooth development. This is a very severe systemic disease seen early in life or in utero in dogs.
Hypoplasia may also occur in single teeth following damage to the permanent tooth germ, for example if a deciduous tooth is fractured or extracted without care. The damaged ameloblasts will fail to form enamel and abnormalities will be evident.
Clinical Signs
In ruminants, one will see a chalky mottling and yellow brown pitting of the tooth, due to enamel hypoplasia. There is usually no difficulty in mastication detected and the animal is clinically well.
In dogs, enamel hypoplasia may result in severe discoloration or pitting of a tooth or teeth due to the effect on enamel formation.
Diagnosis
Clinical signs are diagnostic, plus history e.g. of CDV in dogs, fluoride in cattle.
Treatment and Control
There is no treatment for this condition. Control measures are prevention of the causes of the disease, e.g. vaccination against CDV and prevention of fluoride poisoning in cattle.
If only a single tooth is affected, restorative treatment can be performed using dental composites or a metal-alloy jacket crown.
| Odontodystrophy Learning Resources | |
|---|---|
 Test your knowledge using flashcard type questions |
Veterinary Dentistry Q&A 13 |
References
Tutt, C., Deeprose, J. and Crossley, D. (2007) BSAVA Manual of Canine and Feline Dentistry (3rd Edition), British Small Animal Veterinary Association.
Williams, A (2008) Alimentary System Study Guide, Royal Veterinary College.
Verstraete, F. (1999) Self-assessment colour review in Veterinary Dentistry Manson Publishing
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This article has been peer reviewed but is awaiting expert review. If you would like to help with this, please see more information about expert reviewing. |