Pre-Competition Oral Findings in Danish Sport Horses and Ponies Competing at High Level.
Authors: Uldahl Mette, Bundgaard Louise, Dahl Jan, Clayton Hilary M
Journal: Animals : an open access journal from MDPI
Summary
# Editorial Summary A comprehensive examination of 342 Danish sport horses and ponies undergoing pre-competition veterinary inspections at the 2020 National Championships revealed a striking prevalence of oral pathology, with lesions at the lip commissures showing strong bilateral symmetry—horses presenting with ulcers on one side were significantly more likely to develop them on the contralateral side (p < 0.0001), alongside similar patterns for scarring, fissuring, and trauma. The researchers documented multiple correlations between lesion types: external cutaneous ulcers at the commissures were strongly associated with concurrent internal mucosal ulcers and scarring (both p < 0.0001), whilst erosions and contusions at the commissures correlated with identical lesions on the bars of the mouth (p = 0.0002). Sharp dental pathology such as hooks and enamel points demonstrated bilateral symmetry across the dental arcades (p < 0.0001) and associated with scarring and depigmentation, though interestingly showed no direct relationship to mucosal ulceration or commissural trauma. These findings suggest that oral lesions in high-level competitors develop through consistent mechanical irritation patterns rather than random trauma, implicating bit contact mechanics and dental sharp points as primary aetiological factors, which has direct implications for bit fitting protocols, bit design selection, and the importance of routine dental care before competition. The high prevalence of pathology in elite competition horses warrants consideration of oral health as a performance and welfare concern requiring integrated assessment by farriers, dental practitioners, and trainers.
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Practical Takeaways
- •High-level competition horses frequently present with oral lesions at pre-competition inspections; bilateral examination and lesion documentation should be routine in pre-purchase and pre-competition assessments
- •The association between dental pathology (hooks, sharp points) and oral scarring suggests that bit-related trauma is cumulative; regular dental care and bit fit evaluation may reduce lesion progression
- •Findings at the lip commissures and bars should prompt thorough intraoral examination, as lesions tend to cluster; consider whether bit design, fit, or rider management contributes to the pathology pattern
Key Findings
- •Unilateral lip commissure lesions significantly increase risk of contralateral lesions across all lesion types (ulcers, scarring, fissures, erosion/contusion; p<0.0001)
- •External cutaneous ulcers at lip commissures correlate strongly with internal mucosal ulcers (p<0.0001) and scarring/depigmentation (p<0.0001)
- •Dental abnormalities (hooks and sharp enamel points) are bilateral and associated with oral tissue scarring/depigmentation (p=0.01) but not with mucosal ulcers
- •Lip commissure erosion/contusion is associated with similar lesions on the bars (p=0.0002), and buccal mucosal ulcers correlate with bar ulcers (p=0.003)