When to see a vet urgently
Visible tartar alone is usually not an emergency, but mouth symptoms need prompt attention if:
- Your cat cannot eat or stops eating because of mouth pain.
- The face becomes swollen or pus comes from the mouth.
- There is heavy bleeding, a fresh injury or a broken tooth in the mouth.
- Drooling is accompanied by severe pain, a marked decline in general health or difficulty breathing.
Do not try to scrape a tooth or force a painful mouth open. You can find a vet near you.
Overview
A healthy cat's teeth should be clean and free of deposits. Without care, plaque builds up, quickly mineralises and turns into tartar. Tartar often forms around the base of the canine and cheek teeth, where the tongue's cleaning action is least effective. Tartar is more than a cosmetic problem: it provides a continuing source of bacteria, causing gum inflammation and infection elsewhere in the body.
A build-up of tartar does not automatically mean that your cat has an infection elsewhere in the body.
Plaque is a soft bacterial film on the tooth surface, which also contains material from saliva and cells. Minerals in saliva bind to it to form hard tartar. Inflammation is caused particularly by bacteria living in the film and the body's response to them, rather than by the minerals alone. The rough surface of tartar helps new plaque attach.
Deposits are often visible along the gumline and on the cheek-facing surfaces of the upper teeth. However, a clean-looking crown does not tell you what is happening beneath the gum. The root is normally protected by the gum and jawbone, and its condition cannot be judged from the colour of the visible tooth surface.
Causes
Factors that encourage tartar to form include:
- Lack of regular oral hygiene.
- Feeding soft food without mechanically cleaning the teeth.
- Breed characteristics, with Persian and British cats more susceptible.
- Abnormal saliva composition.
- Genetic predisposition.
- Age, with older cats at greater risk.
- Chronic diseases, such as diabetes and kidney failure.
The effect of diet cannot be reduced to a difference between soft and hard food. Ordinary dry kibble does not automatically clean the teeth, and wet food alone does not mean a cat will develop periodontitis. Mouth structure, plaque control and the individual inflammatory response all play a part. Crowded teeth can make cleaning more difficult.
There is limited cat-specific information on how the listed breeds or saliva abnormalities affect tartar accumulation itself. Diabetes and other underlying diseases are considered during examination and treatment, but visible tartar alone does not prove that such a disease is present.
Risk factors
Tartar is more common in cats that:
- Are over 3–4 years old.
- Eat only soft or wet food.
- Do not have special dental treats or food to help clean the teeth.
- Have other mouth conditions, such as gingivitis or stomatitis.
Mouth diseases can also occur in young cats, so the age in this list is not a threshold below which it is safe to wait. Not having dental treats is not a disease risk in itself: suitable prevention can take different forms. Treats are a possible addition, rather than an essential part of every cat's diet.
Main symptoms
You may notice:
- Yellow or brown deposits on the teeth.
- Bad breath (halitosis).
- Inflamed, red gums.
- Excessive salivation.
- Pain when chewing and avoidance of hard food.
- Tooth loss in severe cases.
Your cat may drop food, chew on one side or turn their head while eating. Some cats continue eating despite a painful mouth. Rubbing the face or avoiding having the mouth handled can also signal a problem. A good appetite alone therefore does not rule out dental pain.
The amount of tartar does not always match the severity of pain. Cats also develop tooth resorption, in which the tooth's own tissue begins to break down. This can be painful without a thick layer of tartar. Bad breath, drooling and changes in eating therefore do not reliably identify the particular dental disease.
Complications and consequences
Untreated tartar leads to:
- Chronic gingivitis.
- Periodontitis and loose teeth.
- Abscesses and fistulas in the mouth.
- Infection spreading through the bloodstream, posing a risk to the heart, kidneys and liver.
Oral inflammation can affect general health, but it is difficult to demonstrate a direct claim that bacteria associated with tartar cause heart, liver or kidney disease. Clear treatment goals are to relieve pain and control oral inflammation. Symptoms affecting particular organs are investigated according to their own findings.
Gingivitis initially affects only the gum and can resolve with appropriate treatment. In periodontitis, the tissues attaching the tooth and its supporting bone have been permanently damaged. Treatment aims to stop progression and retain useful teeth; removing tartar alone cannot restore lost support.
Diagnosis at the vet
Diagnosis is based on:
- Visual examination of the mouth.
- Dental examination under general anaesthesia, where necessary.
- X-rays to assess the roots and bone in cases of periodontitis.
What does the examination establish?
Examining the mouth while your cat is awake helps identify visible deposits, inflammation and possible damage. Tell the vet about eating habits, when bad breath began, previous dental treatment and whether your cat allows you to handle their mouth at home. A painful mouth is not forced open simply to get a better view.
A complete dental examination is performed under general anaesthesia. This allows examination beneath the gums, measurement of periodontal pockets and recording of findings for each tooth. Different teeth in the same cat may be at different stages of disease, so a single overall assessment of the mouth is not enough to make treatment decisions.
Dental X-rays assess the roots and surrounding bone. They may reveal hidden inflammation, bone loss or resorption even when the crown looks fairly normal. Imaging helps determine whether a tooth can be saved and how any extraction should be performed. Treatment planning includes assessment of all the teeth, rather than just cleaning the tooth with the most visible deposits.
Planning anaesthesia
Scraping the teeth while a cat is awake cannot provide a thorough tartar removal procedure. General anaesthesia allows controlled treatment and protection of the airway with a breathing tube. Breathing, circulation and temperature are monitored during the procedure. Pain relief is also planned in advance, and local anaesthesia may be used alongside general anaesthesia.
Age or an underlying disease alone does not determine whether a cat can have anaesthesia. The vet examines your cat, reviews medicines and previous anaesthetics, and chooses any further tests needed. The aim is to assess the benefits and risks for that individual cat. Follow your veterinary practice's instructions about fasting and giving medicines.
Treatment and recovery
Professional cleaning removes plaque and tartar both above and below the gumline, followed by finishing the tooth surfaces. Home care cannot remove tartar that has already hardened. Scraping with a sharp tool can damage the gum or tooth surface and does not allow hidden disease to be investigated.
A severely damaged, loose or otherwise painful tooth may need to be extracted. Removing visible tartar alone is not enough to treat deep damage to the supporting tissues. The treatment plan includes discussing the findings and explaining how to maintain the health of the remaining teeth.
Antibiotics are not usually needed for routine cleaning or every tooth extraction. The decision depends on factors including infection and your cat's general health. Antibiotics do not replace treatment of diseased tissue. Use only medicines prescribed for your cat, following the instructions provided.
Home care after the procedure
Follow the discharge instructions on feeding, medicines and handling the mouth. After extractions, do not start brushing over surgical wounds without permission. Monitor eating, drinking, alertness and any swelling or bleeding. Contact the veterinary practice if your cat does not eat, pain seems to be increasing or recovery otherwise differs from the instructions you were given.
Removing tartar does not provide permanent protection against new plaque. Follow-up is arranged according to the findings in the mouth and how well cleaning works at home. If your cat suddenly resists brushing after previously tolerating it, investigate the reason before resuming training.
Prevention
To help prevent tartar, the following are recommended:
- Regular toothbrushing with toothpaste intended for animals.
- Dental diets and treats with documented effectiveness, such as products with VOHC acceptance; ordinary dry food does not prevent tartar.
- Special treats and toys to help mechanically clean the teeth.
- Regular preventive veterinary examinations.
- Where necessary, ultrasonic tartar removal under general anaesthesia, together with dental examination and X-rays; cleaning without anaesthesia does not remove tartar below the gumline.
Practise touching your cat's mouth in small steps when they are calm, and reward cooperation. Do not force brushing on painful or clearly inflamed gums. Arrange examination and pain treatment first. Your vet can help you choose a brush and technique; the outer surfaces of the upper teeth deserve particular attention.
VOHC acceptance indicates assessed effectiveness in reducing plaque or tartar, and you should check which of these the acceptance covers. Choose a product suitable for cats and fit it into the rest of the diet. A dental diet does not automatically meet the dietary needs of every underlying disease. Unsuitable chew toys can damage teeth and are not required for dental care.
What it means for owners
Tartar is very common in cats but is easily preventable. It is important to remember that regular oral hygiene maintains mouth health and also reduces the risk of systemic disease.
Prevention requires sustained plaque control and individual monitoring, and cannot guarantee that all diseases of the mouth or other organs will be avoided. Even a well-cared-for cat needs a dental examination if symptoms develop.
Frequently asked questions
Can tartar be brushed off?
Hardened tartar cannot be removed by ordinary brushing. Brushing targets soft plaque and helps prevent new deposits after professional cleaning.
Does a cat eating wet food need to switch to dry food?
Not solely because of tartar. Ordinary dry food does not guarantee clean teeth. Diet and suitable home care are chosen according to your cat's mouth and overall health.
Can a cat have dental pain while still eating?
Yes. A cat may adapt their chewing or continue eating despite pain. Drooling, dropping pieces of food or avoiding touch are reasons to have the mouth examined.
Is removing tartar without anaesthesia enough?
It cannot replace comprehensive dental care. The areas below the gumline cannot be properly examined and cleaned while a cat is awake, nor can the necessary dental X-rays be taken.
Does good brushing guarantee healthy teeth?
Not against every disease. Regular plaque removal helps, but resorption and hidden damage, for example, may still require veterinary examination.
This article is for general information only and is not a guide to treatment. If you notice the first signs of illness, contact your vet.
Paw4care editorial team
Sources
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- 2025 FelineVMA feline oral health and dental care guidelines, Journal of Feline Medicine and Surgery, accessed 2026-11-03.
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- Anaesthesia, sedation, and analgesia considerations, AAHA, accessed 2026-11-03.
- Recommending home oral hygiene and products, AAHA, accessed 2026-11-03.
- Pet dental care, AVMA, accessed 2026-11-03.
- Dental X-Rays in Cats, VCA Animal Hospitals, accessed 2026-11-03.
- Brushing, Veterinary Oral Health Council, accessed 2026-11-03.
- VOHC Accepted Products, Veterinary Oral Health Council, accessed 2026-11-03.