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Dental Disease and Tooth Resorption

Painted illustration of dental disease and tooth resorption in a cat

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.

Source:

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