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Vet J. 2008 Jun;176(3):338-44. doi: 10.1016/j.tvjl.2008.03.003. Epub 2008 Apr 18.

Donkey dental anatomy. Part 1: Gross and computed axial tomography examinations.

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  • 1Royal (Dick) School of Veterinary Studies, University of Edinburgh, Department of Clinical Science, Midlothian, UK. Nicole.dutoit@ed.ac.uk

Abstract

Post-mortem examination of 19 donkey skulls showed that donkeys have a greater degree of anisognathia (27% width difference between upper and lower jaws) compared to horses (23%). Teeth (n=108) were collected from 14 skulls and examined grossly and by computed axial tomography (CAT). A greater degree of peripheral enamel infolding was found in mandibular cheek teeth (CT) compared to maxillary CT (P<0.001). A significant increase in peripheral cementum from the apical region to the clinical crown was demonstrated in all CT (P<0.0001). All donkey CT had at least five pulp cavities with six pulp cavities present in the 06s and 11s. A new endodontic numbering system for equid CT has been proposed. A greater occlusal depth of secondary dentine (mm) was present in older donkeys (>16 years) than in the younger (<15 years) donkeys studied. Based on gross and CAT examinations, donkey dental anatomy was shown to be largely similar to that described in horses.

PMID:
18396076
[PubMed - indexed for MEDLINE]
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