Dreamcatcher Alpacas
Alpaca health · Feet, legs & teeth

Tooth Root & Jaw Abscess in Alpacas

Updated 2026-10-02By the Dreamcatcher Alpacas editorial team6 peer-reviewed references
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Urgent — contact your vet today

Early treatment makes a big difference. Don't wait more than a day.

Infection of a tooth root or the jawbone causing a hard lump along the jaw, often with a draining tract.

Category
Feet, legs & teeth
Urgency
Urgent
Also called
Lumpy jaw, Facial abscess

Signs & symptoms

  • Hard swelling on the lower or upper jaw
  • Draining pus
  • Dropping feed, slow chewing
  • Weight loss
  • Bad breath

Related symptom guides: Alpaca Not Eating, Weight Loss, Swelling Under the Jaw (Bottle Jaw), Hard Lump on the Jaw, Drooling & Green Slobber.

What causes it?

Plant awns (foxtails), fractured teeth, or bacteria entering around erupting cheek teeth.

Risk factors

  • Hay or pasture with foxtail or barley awns
  • Young adults with erupting teeth

How vets diagnose it

Skull radiographs or CT.

Treatment

Long antibiotic courses, often with surgical extraction of the infected tooth.

Do not wait to see if it improves. Camelids hide illness, and by the time signs are obvious the problem is often advanced. Call your veterinarian.

Prevention

  • Avoid awned hay
  • Regular dental checks

Background

A dental abscess is a localized collection of pus associated with a tooth. The most common type of dental abscess is a periapical abscess, and the second most common is a periodontal abscess. In a periapical abscess, usually the origin is a bacterial infection that has accumulated in the soft, often dead, pulp of the tooth. This can be caused by tooth decay, broken teeth or extensive periodontal disease. A failed root canal treatment may also create a similar abscess.From Wikipedia — “Dental abscess”, licensed under CC BY-SA 4.0.

Research & references

PubMed lists 12 peer-reviewed papers on this topic in camelids. The most relevant include:

  1. Tooth root abscesses in New World camelids: 23 cases (1972-1994). Cebra ML, Cebra CK, Garry FB Journal of the American Veterinary Medical Association, 1996. PubMed 8756887 · cited 15×
  2. Tooth Root Abscess and Mandibular Infections in Old World Camelids: 3 Cases. Sparnon A, Smith J, Mulon PY et al. Case reports in veterinary medicine, 2024. PubMed 38595336 · DOI · Free full textOpen access · cited 1×
  3. Dental disease in alpacas. Part 1: Prevalence of dental disorders and their mutual relationships. Proost K, Pardon B, Pollaris E et al. Journal of veterinary internal medicine, 2020. PubMed 32107866 · DOI · Free full textOpen access · cited 13×
  4. Tooth root abscesses in llamas and alpacas: 123 cases (1994-2005). Niehaus AJ, Anderson DE Journal of the American Veterinary Medical Association, 2007. PubMed 17630900 · DOI · cited 31×
  5. Clinical insights into the three-dimensional anatomy of cheek teeth in alpacas based on micro-computed tomography. Part 1: mandibular cheek teeth. Proost K, Boone MN, Josipovic I et al. BMC veterinary research, 2021. PubMed 34686206 · DOI · Free full textOpen access · cited 6×
  6. Dental disease in alpacas. Part 2: Risk factors associated with diastemata, periodontitis, occlusal pulp exposure, wear abnormalities, and malpositioned teeth. Proost K, Pardon B, Pollaris E et al. Journal of veterinary internal medicine, 2020. PubMed 32108969 · DOI · Free full textOpen access · cited 10×

Frequently asked questions

What is tooth Root & Jaw Abscess in alpacas?
Infection of a tooth root or the jawbone causing a hard lump along the jaw, often with a draining tract.
What are the signs of tooth Root & Jaw Abscess?
Hard swelling on the lower or upper jaw, draining pus, dropping feed, slow chewing, weight loss and bad breath.
How do you prevent tooth Root & Jaw Abscess?
Avoid awned hay. Regular dental checks.
Is tooth Root & Jaw Abscess an emergency?
Urgent — contact your vet today. Early treatment makes a big difference. Don't wait more than a day.

This page is educational and does not replace advice from a veterinarian who has examined your animals. Camelid medicine uses many drugs “extra-label”, so dosing must come from your vet. In an emergency, call your vet first. Read our disclaimer · How we write and review content.