Dental Disease in Cats
Dental disease is very common in cats and can be surprisingly painful. Because cats often hide illness well, subtle changes like bad breath, dropping food, or less grooming can be early clues that your cat needs veterinary care.
Dental disease is often urgent, not just cosmetic
Mild plaque can sometimes be addressed with routine veterinary dental care, but red gums, mouth pain, drooling, bleeding, trouble eating, face swelling, or sudden behavior changes should prompt a veterinary visit soon. Seek emergency care if your cat cannot eat, seems severely painful, has facial swelling, heavy bleeding, or trouble breathing.
Symptoms to Watch For
Bad breath
Persistent foul breath can be an early sign of plaque buildup, gingivitis, or periodontal disease.
Red or bleeding gums
Gums may look inflamed, swollen, or bleed when the mouth is touched or while eating.
Trouble eating
Cats may chew on one side, drop food, turn the head while eating, or avoid hard food.
Drooling or pawing at the mouth
Oral pain may cause excess saliva, pawing at the face, or reluctance to have the head touched.
Poor grooming
Painful mouths can make cats groom less, leaving the coat unkempt or greasy.
Behavior changes
Irritability, hiding, reduced appetite, and less interest in play may reflect chronic mouth pain.
What Causes Dental Disease
In cats, dental disease most often starts when plaque and bacteria collect on the teeth and along the gumline. If plaque is not removed, it hardens into tartar and triggers inflammation of the gums (gingivitis). Over time, this can progress to periodontal disease, which damages the tissues, ligaments, and bone that support the teeth. Cats may also develop other painful oral problems alongside or instead of periodontal disease, especially tooth resorption and, in some cats, gingivostomatitis. Early detection matters because cats commonly hide oral pain until disease is advanced.
- Plaque and tartar buildup
- Bacterial inflammation at and below the gumline
- Lack of effective home dental care
- Increasing age; periodontal disease is especially common in older cats
- Tooth crowding, retained diseased teeth, or other dental abnormalities
- Possible underlying contributors in some cats with severe or treatment-resistant gum disease, such as immune-related disease, diabetes, Bartonella infection, FeLV, or FIV
- Breed predispositions have been reported in some purebred cats, including Abyssinians, Siamese, Maine Coons, Persians, and Somalis
How It's Diagnosed
A veterinarian will start with a history and oral exam, but the full extent of feline dental disease usually cannot be assessed while a cat is awake. Diagnosis typically requires a dental procedure under general anesthesia so the veterinarian can examine each tooth, measure periodontal pockets, and take dental X-rays to look below the gumline and evaluate bone loss, tooth roots, and hidden lesions. Your cat may also need bloodwork before anesthesia, especially if they are older or have other health concerns.
- Physical exam and review of eating, grooming, and behavior changes
- Conscious oral exam to look for tartar, gum inflammation, broken teeth, or obvious pain
- Comprehensive dental exam under general anesthesia
- Periodontal probing to assess attachment loss around each tooth
- Dental radiographs (X-rays) to identify bone loss, tooth resorption, abscesses, and disease below the gumline
- Additional testing when indicated, such as bloodwork or screening for concurrent illness
Treatment Options
Treatment depends on the type and severity of dental disease. Professional dental cleaning above and below the gumline under anesthesia is the standard treatment for gingivitis and early periodontal disease. More advanced disease may require tooth extraction, periodontal therapy, pain control, and treatment of any underlying conditions. Cats generally do very well after diseased teeth are removed and are often more comfortable and willing to eat. Long-term management usually includes regular veterinary rechecks and home dental care when your veterinarian says it is safe and appropriate.
- Professional dental cleaning under anesthesia; anesthesia-free cleaning does not treat disease below the gumline
- Dental X-rays and periodontal therapy as needed
- Extraction of teeth that are loose, severely diseased, painful, or affected by advanced resorption
- Pain management and supportive care recommended by your veterinarian
- Treatment of contributing conditions when suspected
- Ongoing prevention with veterinary-approved tooth brushing, dental diets or products when appropriate, and routine rechecks
Cornell reports periodontal disease affects an estimated 85% of cats over 6 years old.
Merck notes periodontitis can be seen in some cats as early as 1 year of age.
Cornell estimates tooth resorption affects about 20% to 60% of cats, and nearly three-quarters of cats 5 years and older.
Merck notes some cats treated for periodontitis need preventive cleanings as often as every 3 months to 1 year.
Living with Dental Disease
Common Questions About Dental Disease in Cats
Is dental disease common in cats?
How can I tell if my cat has mouth pain?
Does my cat really need anesthesia for a dental procedure?
Can dental disease in cats be treated without removing teeth?
Are some cats more likely to develop dental disease?
How can I help prevent dental disease?
Disclaimer: The information provided in this article is for educational purposes only and does not constitute veterinary medical advice. Reading this content does not establish a veterinarian-client-patient relationship. Every pet is different — always consult a licensed veterinarian before making decisions about your pet's health, diet, or care. If you'd like personalized guidance, you can talk to one of our vets. If your pet is experiencing a medical emergency, contact your local emergency animal hospital immediately.