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15 Cards in this Set
- Front
- Back
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What is a diastema?
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the presence of a space b/w adjacent teeth that should normally be in contact at the occlusal surface
Pleural (diastemata) |
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Food often becomes entrapped in equine cheek teeth (CT) and may cause painful periodontal food pocketing
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True
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What is meant by an open or valve diastema?
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Diastema are clinically defined as open (same width throughout the depth of the diastema) or valve (narrower at the occlusal aspect) diastema, with the latter causing most food entrapment and thus clinical problems
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Study Group: 349 donkeys from The Donkey Sanctuary
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True
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The width of each diastema was measured on its lateral (buccal) and medial (lingual or palatal) aspect at both the occlusal surface and gingival level
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True: A total of 45 diastemata were present in the 16 skulls evaluated with 1-6 diastemata per skull
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What % of the skulls with diastemata had associated periodontal disease?
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100%; all that had diastemata had periodontal disease
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What are 2 common clinical signs found with cheek teeth diastemata?
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1. Quidding (horse stores food on side of mouth, or drops food from mouth when eating)
2. Weight Loss |
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Are the maxillary vs. mandibular cheek teeth more commonly affected?
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A past study noted that the diastemata occured with equal frequency in maxillary and mandibular rows and that they were most commonly found b/w the 09's and 10's.
However, more recent studies show that there is an increased prevalence of diastema of the mandibular CT |
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What predisposes equids to diastemata?
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The normal tapering of the reserve crown towards the apex predisposes to the development of senile diastema as the animal ages and the erupted crown becomes more narrow
The rostro-caudal angulation of the teeth (which also decreases with age) is then unable to compress the cheek teeth row adequately resulting in the development of senile diastemata |
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What are other causes of diastemata?
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The can be secondary to other acquired cheek teeth disorders (acquired dental displacements, missing teeth, or adjacent to tall overgrowths that cause drifting of rostro-caudal cheek teeth
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In this study, 29% of the diastemata were not associated with intercurrent cheek teeth disorders and were most likely attributable to senile diastemata due to the high median age (32 years) of this population
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True
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Did the type of diastema (open vs. valve) influence whether or not periodontal food pocketing was present?
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No, as only 5 diastemata did not have food impaction of which 2 were valve and 3 open diastemata
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Previous work showed that food pocketing was commonly present with CT diastema, with periodontal pockets > 50-mm deep recorded
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True
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In this study, periodontal disease was observed adjacent to all diastema and periodontal pockets (<8.47mm deep laterally, and <7.1mm medially)
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It seems that the smaller perio pockets depths observed in this study compared with other reports could be due to the smaller relative size of the donkeys and to the short reserve crowns of these older animals
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Periodontal pockets were more common on the lateral aspect and were predominately deeper (4.63 +/- 0.37mm) compared with medial pockets (2.38 +/- 0.4mm)
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However, there was no significant difference between the periodontal pocket depths in open or valve diastema
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