Cheek tooth wear and quidding in an aged pony
A 22-year-old Welsh pony gelding is presented for weight loss over 3 months and dropping of wads of partially chewed hay (quidding). Body condition score is 3 of 9. The owner reports the pony is still bright and drinking. Oral examination with a speculum is limited by the pony's tolerance, but the left mandibular cheek teeth show a sharp buccal overgrowth, and the right maxillary arcade appears to have a step mouth with one tooth noticeably taller than its neighbors. There is a small amount of feed material packed between two right mandibular cheek teeth. The pony has a history of two previous dental floats, the last 18 months ago. The owner is worried about sedation because the pony had a transient reaction to detomidine previously.
1. Interpret the findings and explain how the likely dental abnormalities could produce quidding and weight loss.
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Quidding and weight loss in an aged pony point to inadequate mastication, most often from painful or inefficient grinding surfaces. A sharp buccal overgrowth on the mandibular cheek teeth can lacerate the buccal mucosa and discourage chewing on that side. A step mouth means one tooth is overgrown relative to adjacent teeth, disrupting the occlusal table and preventing effective lateral excursion. Feed packing between teeth suggests diastema formation, which traps material and causes periodontal inflammation. Together these produce pain on chewing, dropped feed, and reduced intake. Age-related changes such as tooth loss, crown wear, and altered eruption also contribute. The findings do not yet exclude more serious causes such as apical infection or sinus disease, so a thorough examination under sedation with a full-mouth speculum and radiographs is needed. Weight loss should also prompt consideration of systemic disease, but the oral findings provide a plausible dental explanation.
2. The owner is anxious about sedation after a previous reaction. How would you plan a safe examination and treatment, and what would you prioritize at this visit?
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Review the previous reaction in detail: timing, signs, dose, and any other drugs given. A transient reaction may have been excitement, ataxia, or a vasovagal response rather than a true adverse event. Use a lower dose of detomidine or an alternative such as xylazine or acepromazine combined with an opioid, titrated to effect, with the pony in a quiet environment and an intravenous catheter placed for rescue drugs. Monitor heart and respiratory rate, mucous membranes, and sedation depth. The priority is a complete oral examination with a full-mouth speculum and head stand, charting all arcades, followed by radiographs of any suspicious teeth. Treatment at this visit should address the most painful lesions: reduce the sharp buccal overgrowths and correct the step mouth conservatively. Avoid over-reduction of any tooth. Diastema management may be deferred to a second visit once the pony is more comfortable and the owner has seen the response.
3. After treatment, the owner asks whether the pony can return to normal hay feeding and how often dental care will be needed. Formulate a follow-up plan.
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Immediate post-treatment feeding should be softened: soaked hay, haylage, or a complete feed to reduce loading while the mouth heals. Reintroduce long-stem forage gradually over 1 to 2 weeks, monitoring for quidding. Because the pony is aged and has existing occlusal abnormalities, dental examinations every 6 months are appropriate, with floating as needed rather than on a fixed annual schedule. The owner should watch for dropping feed, weight change, and reluctance to eat. Body condition should be recorded at each visit. Diastemata may need ongoing widening or cleaning if feed packing recurs. Radiographs may be repeated if apical disease is suspected. The goal is maintenance of a functional occlusal table and comfort, not a permanent correction, since the underlying causes are age-related and progressive.