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

Citation

Nicole du Toit, Susan A. Kempson, Padraic M. Dixon. June 2008. Donkey dental anatomy. Part 1: Gross and computed axial tomography examinations. The Veterinary Journal. 176:3. 338-344.

Authors
Publication details
Publication date: 
1 June 2008
Volume: 
176
Issue: 
3
Page numbers: 
338-344
DOI number: 
10.1016/j.tvjl.2008.03.003
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.