Dental Disease in Cats: A Hidden Source of Chronic Pain

Periodontal disease and tooth resorption affect the majority of cats over three years old, causing chronic oral pain that profoundly affects quality of life and is frequently missed by owners.

Key Facts

Studies estimate that 50-90% of cats over 3 years old have some degree of periodontal disease.
Feline tooth resorption (formerly called feline odontoclastic resorptive lesions) affects approximately 30-70% of domestic cats and causes severe pain when active.
Cats rarely show obvious signs of oral pain — they typically continue eating even with severe dental disease, often swallowing food whole to avoid chewing.
Clinical signs of dental pain in cats include reduced grooming, changes in food preference (softer foods), drooling, pawing at the mouth, and behavioral changes like increased hiding.
Dental disease increases systemic inflammation and has been linked to kidney disease, heart disease, and diabetes in cats.
Professional dental cleaning under general anesthesia is the only effective treatment; antibiotics alone do not resolve periodontal disease.
Regular home dental care — daily toothbrushing with feline toothpaste — significantly reduces disease progression when started early.

Welfare Considerations

Dental disease is one of the most significant yet overlooked sources of chronic pain in domestic cats. The stoic nature of cats means that even severe disease — with exposed tooth roots, infected gums, or resorbing teeth — may go undetected for months or years. During this time, cats are experiencing daily pain that affects eating comfort, social behavior, grooming, and overall wellbeing. The welfare impact extends to psychological distress: chronic pain is associated with increased anxiety and reduced positive affective states in cats. Owners who assume a cat is "fine" because it is still eating may be missing significant suffering. Regular veterinary oral examinations — ideally including dental radiographs — are the most reliable way to detect subclinical disease before it causes severe welfare compromise.

What You Can Do

Schedule annual veterinary dental examinations for your cat, requesting dental radiographs if possible.
Learn to recognize subtle signs of dental pain in cats: food dropping, head tilting while eating, reduced purring.
Implement daily toothbrushing from kittenhood using feline-formulated toothpaste (never human toothpaste).
Discuss dental disease risk with your vet at every wellness visit and ask about professional cleanings.
Provide VOHC-approved dental treats and diets as supplements to — not replacements for — toothbrushing.