By Dr Duncan Houston
A cat that still eats can still have a painful mouth. Dental disease is easy to miss when the visible change is just bad breath, slower chewing or a preference for softer food.
These nine facts explain what matters beneath the surface and how to turn a dental concern into a sensible care plan.
Quick Answer
Cats normally have 26 baby teeth and 30 permanent teeth, but the number matters less than whether the mouth is comfortable and healthy. Gum disease, fractured teeth and tooth resorption can cause pain even when a cat keeps eating. Arrange an examination for persistent bad breath, drooling, red gums or changed chewing; inability to eat, major swelling or trauma needs prompt care.
Nine useful facts about cat teeth
1. Kittens replace their baby teeth
Permanent teeth emerge during kittenhood, commonly over the period around four to seven months. If a baby tooth remains beside its replacement, ask your vet to check it rather than trying to loosen it. MSD's feline dental-development guide describes the normal tooth sets and eruption period.
2. Different teeth do different jobs
Canines grip and puncture; cheek teeth cut food; small front incisors help with precise nibbling and grooming. These shapes do not make the mouth immune to disease.
3. Adult teeth should not fall out as a normal part of ageing
A missing or loose adult tooth may reflect trauma, periodontal disease or resorption. The visible crown can disappear while roots or diseased tissue remain. Do not assume a lost tooth has solved the problem.
4. “Cavities” are not the usual feline dental problem
Human-style tooth decay is uncommon in cats. Tooth resorption is a different process in which tooth structure is destroyed. Its cause is not fully understood, and brushing cannot reliably prevent or repair it. See Cornell's tooth-resorption explanation.
5. Red gums and severe oral inflammation are not interchangeable
Gingivitis affects the gums. Periodontitis damages tooth-supporting tissues. Gingivostomatitis involves more extensive painful oral inflammation and needs a different treatment discussion. An owner cannot reliably distinguish these from a quick photograph.
6. Eating does not rule out dental pain
A cat may swallow food with little chewing or adapt its eating pattern. Watch for dropped food, jaw chattering, drool, pawing at the mouth or withdrawing from grooming. Cornell's dental-disease guidance describes the common conditions and their consequences.
7. The awake examination is a starting point
Some disease lies below the gumline. A complete dental assessment and treatment may require anaesthesia, probing and dental radiographs. Scraping visible tartar from an awake cat cannot provide the same assessment or treat hidden disease.
8. Removing a diseased tooth can improve comfort
Keeping every tooth is not the goal when some are painful and cannot be saved. Many cats adapt well after appropriate extractions, but feeding, pain relief and follow-up should follow the treating vet's plan.
9. Home care supports prevention, not diagnosis
Gentle daily toothbrushing with appropriate veterinary toothpaste can help control plaque when the mouth is comfortable. Accepted dental aids may offer additional benefit for plaque or tartar, but their claim is specific; a seal does not mean treatment for resorption or oral inflammation. The Veterinary Oral Health Council lists products and accepted claims by species.
How urgent is a dental concern?
| Sign | Concern | Action |
|---|---|---|
| Mild visible plaque, no behaviour change | Preventive care needs review | Discuss oral health at a planned examination |
| Persistent bad breath, red gums or changed chewing | Possible dental pain or inflammation | Arrange an examination promptly |
| Broken tooth, facial swelling, blood or marked drooling | Injury or significant oral disease | Call your vet today |
| Unable to eat, major trauma, uncontrolled bleeding or breathing difficulty | Potential emergency | Seek urgent or emergency care immediately |
What else can cause mouth signs?
A foreign object, oral ulcer, jaw injury, infection or tumour can cause similar signs. A string under the tongue is particularly important: do not pull it because it may extend into the digestive tract. Your vet will assess the mouth and general health before choosing treatment.
When is this an emergency?
Seek emergency care for major facial trauma, breathing difficulty, uncontrolled oral bleeding or severe distress. Contact your vet the same day if your cat cannot eat, has significant swelling or appears painful. Cats should not be left without food while an owner waits to see whether a dental problem settles.
What should you do next?
- Record changes in eating, grooming, drooling and behaviour.
- Arrange an oral examination and ask whether dental radiographs are needed.
- Avoid forcing the mouth open or brushing inflamed, painful tissues.
- Use only prescribed pain relief; never give human dental gels or painkillers.
- After treatment, follow the individual food, medication and recheck instructions.
Common mistakes
- Waiting for appetite to disappear before seeking care.
- Assuming bad breath is normal for cats.
- Using hard bones or antlers to clean teeth.
- Believing home products replace treatment below the gumline.
Preventing avoidable dental problems
Introduce lip lifting and brushing gradually with rewards while your cat is comfortable. Check chew hazards and include oral assessment in routine veterinary care. The timing of professional treatment depends on findings, not a fixed annual cleaning rule.
Frequently Asked Questions
How many teeth should an adult cat have?
Normally 30, although variation and previous extractions occur. A newly missing tooth needs assessment.
Can cats eat without teeth?
Many adapt well after healing, especially once painful disease is treated. Follow your vet's instructions during recovery.
Can brushing stop tooth resorption?
No proven home-care method reliably prevents it. Regular examinations and appropriate imaging help detect affected teeth.
Does dry food clean a cat's teeth?
Ordinary dry food is not a substitute for dental care. Specific dental diets have particular evidence and should suit the cat's overall health.
A comfortable mouth matters more than a perfect tooth count. Notice subtle changes early and use home care alongside veterinary assessment.
For more feline health information, visit ASK A VET™. A painful mouth or reduced food intake needs direct veterinary advice.
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Every ASK A VET article is written and reviewed by qualified veterinarians.
