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| − | ===Abnormal Wear of Teeth=== | + | ===[[Abnormal Wear of Teeth]]=== |
| − | *Abnormal wear of [[Oral Cavity - Teeth & Gingiva - Anatomy & Physiology|teeth]] in herbivores may result from irregular grinding of molars as well as from periodontal disease.
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| − | *Sharp edges usually form on the lingual aspect of the mandibular [[Oral Cavity - Teeth & Gingiva - Anatomy & Physiology|teeth]] and the buccal aspects of the maxillary molars and may cause quite severe oral lacerations.
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| − | **The condition is sometimes known as “'''shear mouth'''”.
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| − | *Malocclusion of [[Oral Cavity - Teeth & Gingiva - Anatomy & Physiology|teeth]] may be acquired as a result of trauma and loss or displacement of [[Oral Cavity - Teeth & Gingiva - Anatomy & Physiology|teeth]].
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| − | *It is particularly important in those teeth which continue to grow excessive growth, interference with prehension of food or even growth of the [[Oral Cavity - Teeth & Gingiva - Anatomy & Physiology|tooth]] into adjacent structures.
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| − | *Malocclusions in dogs and cats may arise from retention of deciduous [[Oral Cavity - Teeth & Gingiva - Anatomy & Physiology|teeth]] in the young animal.
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| − | *Malocclusion of [[Oral Cavity - Teeth & Gingiva - Anatomy & Physiology|teeth]] may also occur as a result of malformations of the jaws. The terminology used for these is rather confusing and the following should assist:
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| − | **'''Prognathism''' is an abnormally long lower jaw.
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| − | **A similar effect is produced by '''brachygnathia superior''' (ie short maxilla). Both conditions may be referred to as ''undershot jaw''.
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| − | ***A typical breed affected is the '''Boxer'''.
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| − | **'''Retrognathism''' is an unusually short lower jaw. This may also be called '''brachygnathia inferior''' (i.e. short mandible). The condition is referred to as ''overshot jaw'' or ''parrot mouth''.
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| − | ***Typical breeds affected are the '''Borzoi''' or '''Rough Collie'''.
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| | ===Abnormal Numbers of Teeth=== | | ===Abnormal Numbers of Teeth=== |