Dental Disease and Tooth Resorption

What is it?
Cats commonly develop periodontal disease, and many also develop tooth resorption, a painful condition in which the tooth structure is slowly broken down by the body's own cells. The cause is not fully understood.
What signs should I watch for?
Signs to watch for include drooling or dropping food; chewing on one side, or preferring soft food; jaw chattering or flinching when the mouth is touched; bad breath, red gums; and pink spots or gum tissue growing over a tooth.
How is it diagnosed and treated?
Lesions are often hidden below the gumline, so dental X-rays under anesthesia are needed. Resorbing teeth are typically extracted, since filling them doesn't work.
Can it be prevented, and what's the outlook?
- Resorption can't currently be prevented, but routine exams and cleanings catch painful teeth early.
- Cats often hide mouth pain well.
Reviewed by the Adler Veterinary Hospital veterinary team, October 2026.
Very common in cats
Who's at risk:
Drooling, dropping food, chewing on one side, bad breath
Main signs:
Schedule a visit soon
Urgency:
When to call a vet right away
- Bleeding from the mouth
- Drooling more than usual
- Difficulty eating, or dropping food
- Jaw trembling or chattering when the mouth is touched
Not sure whether it can wait? Call us anyway. Our team can help you decide.
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