Feline Tooth Resorption and Gum Disease: Spotting It Early
Tooth resorption and gum disease are common, painful, and easy to miss in adult and senior cats. Learn the home signs to check for, what a vet dental exam involves, and which daily care genuinely helps versus what only slows the problem.
Quick answer
Tooth resorption and gum disease (periodontal disease) are the two most common dental problems in adult and senior cats, and both can be painful long before you notice. Watch for drooling, dropping food, chewing on one side, red gum lines, and bad breath. You cannot fix resorption at home — it needs a vet exam and usually dental X-rays — but daily care slows gum disease and catches trouble early.
Tooth resorption and gum disease are common, painful, and easy to miss in adult and senior cats.
What is tooth resorption?
Tooth resorption is a process where the tooth's own hard tissue breaks down and is slowly absorbed by the body, often starting at the gum line. It is not a cavity from sugar; the exact cause is still debated. More than half of cats over five years old have at least one resorptive lesion. The exposed area is very sensitive, which is why an otherwise healthy cat may suddenly flinch while eating.
A weekly lift-the-lip check helps you spot redness, tartar, or a resorptive notch early.
Gum disease is the other half of the story
Plaque hardens into tartar within days, and the bacteria inflame the gum (gingivitis). Left alone this progresses to periodontitis, where the tissue and bone anchoring the tooth are destroyed. Unlike resorption, early gum disease is largely preventable with home care.
Signs you can check at home
Gently lift the lip weekly and look at the gum line and the large back teeth. Note any redness, a visible notch, tartar, or a broken tooth. Behaviourally, watch for pawing at the mouth, turning away from dry food, swallowing kibble whole, head-shaking while eating, or a drop in grooming.
Dropping food, chewing on one side, or avoiding kibble can be the first sign of mouth pain.
What a vet visit involves
A conscious exam gives clues, but a proper assessment needs a general anaesthetic so every tooth can be probed and X-rayed. Resorptive teeth are usually extracted, because there is no reliable way to save them and they stay painful. Cats generally eat comfortably even after multiple extractions, often better than before.
Home care that actually helps
Daily tooth brushing with a pet-specific enzymatic paste is the gold standard for slowing gum disease. Dental diets, water additives, and approved dental treats help as extras, not replacements. None of these reverse resorption, so home care is about prevention and monitoring, not cure.
Quick FAQs
Is tooth resorption preventable? Not reliably, because the cause is unclear. What you can do is catch it early with regular checks so the painful tooth is removed sooner.
Will my cat starve after extractions? No. Most cats eat within a day, and many are visibly more comfortable. Wet food or softened kibble helps during healing.
Does dry food clean teeth? Only mildly. Standard kibble shatters without scrubbing the tooth; special dental kibble is designed to help, but brushing does far more.
Is bad breath ever normal? No. Persistent bad breath almost always means dental disease or another health problem worth a vet check.