Affiliate & editorial disclosure: PetInsuranceLab may earn a commission when you request a quote through links on this page. This does not affect our editorial independence or the accuracy of the information below.
Cat Stomatitis in 2026: Symptoms, Treatment Cost & How Often Extraction Really Works
Quick Answer
Cat stomatitis (feline chronic gingivostomatitis, or FCGS) is a painful immune overreaction to dental plaque that inflames the gums and the back of the mouth; Texas A&M's veterinary college says it affects fewer than 12% of cats and does not go away on its own. The standard treatment is extracting most or all of the teeth, which WebVet's 2026 price table puts at $1,500–$4,000+ for a full-mouth extraction and $800–$1,500 for a partial-mouth extraction. Extraction helps most cats but cures fewer than owner guides suggest: in the largest outcome study (Jennings et al., JAVMA 2015, 95 cats), 28.4% had complete resolution, 39.0% improved substantially, and about one in three improved little or not at all, and removing every tooth did no better than removing only the back teeth. Accident-and-illness pet insurance covers stomatitis as a dental illness when it is not pre-existing, but check for dental sub-limits: Embrace caps dental illness at $1,000 per policy term.
Stomatitis is usually diagnosed after weeks of a cat that walks up to the food bowl, then backs away from it. The vet looks in the mouth, sees angry red tissue at the back of the jaw, and the conversation turns to removing most or all of the teeth, with an estimate in the thousands. Most owner guides then reassure you that extraction cures the problem: Spot Pet Insurance's guide (updated October 2026), citing PetMD, says about 90% of cats get complete or near-complete resolution, and WebVet says roughly 80% significantly improve or are cured. The largest peer-reviewed outcome study is less rosy and more useful when you are deciding what to pay for. This guide covers the symptoms, how vets confirm the diagnosis, every treatment option with its evidence and 2026 price, and how pet insurance handles the bill.
What Is Stomatitis in Cats?
Stomatitis in cats, which veterinary dentists call feline chronic gingivostomatitis (FCGS), is severe, long-lasting inflammation of the gums and the lining of the mouth, especially the tissue at the back of the mouth beside the last molars. It is not just bad gingivitis. In a February 2026 Texas A&M Pet Talk column, Dr. Leah Taylor, a clinical assistant professor at the Texas A&M College of Veterinary Medicine, describes it as the immune system overreacting to plaque, says the exact cause is unclear, and puts it at fewer than 12% of cats. VCA Animal Hospitals likewise calls the cause unknown and notes that feline immunodeficiency virus (FIV) and feline leukemia virus (FeLV) may play a role, which is why vets usually test for both; see our cat FIV symptoms guide for how that virus progresses.
One fact shapes every decision that follows: according to a 2024 Veterinary Evidence knowledge summary (Nekouei et al.), spontaneous recovery from FCGS has never been reported. Medication can make a cat comfortable for a while, but the disease does not burn itself out.
| Gingivitis | Tooth resorption | Stomatitis (FCGS) | |
|---|---|---|---|
| Where it is | A red line at the gumline of affected teeth | Inside individual teeth, which break down and are reabsorbed (see our cat tooth resorption guide) | Gums plus the lining at the back of the mouth, often on both sides |
| Pain | Mild | High, at the affected tooth | Severe, across the mouth |
| Usual treatment | Cleaning under anesthesia plus home care | Extract the affected teeth | Partial- or full-mouth extraction plus medication |
| Typical 2026 cost | $300–$700 for a cleaning with X-rays (WebVet) | $800–$2,000+ for several lesions (see our cat teeth cleaning cost guide) | $800–$4,000+ depending on how many teeth come out (WebVet) |
Symptoms of Stomatitis in Cats
Cats hide oral pain well, so the first signs are usually behavioral. Texas A&M lists loss of appetite, drooling, redness and ulcers in the mouth, and blood in the saliva, plus two subtler clues: running away from the food bowl and not wanting the face touched. VCA adds weight loss and an unkempt coat, because grooming hurts.
| Sign | What you may notice | What to do |
|---|---|---|
| Eating then running off | Approaches the bowl hungry, takes a bite, yowls or backs away; prefers soft food | Book a vet exam within days |
| Not eating at all | Skips meals entirely | Call your vet the same day; cats should not go without food |
| Drooling or bloody saliva | Wet chin, pink-tinged drool on bedding or toys | Book a vet exam within days |
| Red, raw tissue at the back of the mouth | Visible when the cat yawns; can bleed | Book a vet exam; do not try to open the mouth yourself |
| Face-shy, pawing at the mouth | Pulls away from chin scratches it used to like | Mention it at the exam; it is a pain sign |
| Greasy or matted coat, weight loss, bad breath | Stops grooming; ribs easier to feel | Book a vet exam; weigh the cat to track it |
How Vets Diagnose Stomatitis
A conscious cat with a painful mouth rarely allows a full look, so diagnosis usually happens under anesthesia, during the same procedure that becomes the first treatment step. Expect:
- Pre-anesthetic bloodwork, and usually FIV and FeLV tests, because both viruses can be involved (VCA).
- Full-mouth dental X-rays to chart diseased teeth and resorption that is invisible above the gumline. Our cat X-ray cost guide covers how dental radiographs are billed.
- A biopsy when the inflammation looks unusual or one-sided, so oral cancer is not mistaken for stomatitis.
- Follow-up X-rays after extraction, which veterinary dentists use to confirm that no root fragments were left behind; leftover roots can keep the inflammation going.
Cat Stomatitis Treatment Options and 2026 Costs
WebVet's 2026 U.S. price table (medically reviewed by Dr. Pippa Elliott, BVMS MRCVS, July 2026) is the most detailed published breakdown. Prices vary by region, clinic, and what the estimate includes, so treat these as ranges, not quotes.
| Option | What it involves | What the evidence says | 2026 cost (WebVet) |
|---|---|---|---|
| Medication only | Pain relief, anti-inflammatories, antibiotics, oral rinses or gels | Controls flare-ups; no reported spontaneous cures (Veterinary Evidence, 2024) | $30–$80 per month, for life |
| Diagnostic cleaning + X-rays | Anesthesia, charting, full-mouth X-rays, cleaning | Needed to plan extractions; not a treatment by itself | $300–$700 |
| Partial-mouth extraction | All teeth behind the canines (premolars and molars) removed | Same overall response as full-mouth extraction in 95 cats (Jennings et al., 2015) | $800–$1,500 |
| Full-mouth extraction | Every tooth, including canines and incisors | About two-thirds of cats resolve or improve substantially (Jennings et al., 2015) | $1,500–$4,000+ |
| Board-certified veterinary dentist | Referral surgery for complex mouths | Same procedures, specialist training and equipment | $3,000–$5,000+ |
| Stem cell therapy | IV infusions of the cat's own fat-derived stem cells | 13 of 18 extraction-resistant cats responded (Arzi et al., 2020); not effective before extraction (Arzi et al., 2021) | $2,000–$4,000+ |
The medication-only path looks cheaper, but it is a subscription with no end date: at WebVet's $30–$80 per month, five years of medical management costs $1,800–$4,800, about the same as a full-mouth extraction, without a realistic chance of resolution. That math is why most veterinary dentists recommend surgery early rather than after years of steroids.
Does Tooth Extraction Cure Cat Stomatitis? The Real Success Rates
The best outcome data comes from the University of Pennsylvania: Jennings, Lewis, Soltero-Rivera, Brown and Reiter reviewed 95 cats treated with extractions between 2000 and 2013 (Journal of the American Veterinary Medical Association, 2015), with a median follow-up of 231 days.
| Outcome after extraction | Cats | Share |
|---|---|---|
| Complete resolution | 27 | 28.4% |
| Substantial improvement | 37 | 39.0% |
| Little improvement | 25 | 26.3% |
| No improvement | 6 | 6.3% |
Three findings from that study matter for your decision and your budget:
- "Cured" and "better" are different numbers. Complete resolution was 28.4%; complete resolution plus substantial improvement was 67.4%, which is where the "about two-thirds" figure in Texas A&M's 2026 guide comes from. The 80–90% figures on some websites appear to combine broader definitions of improvement.
- Plan for medication after surgery. Of the 64 cats that resolved or improved substantially, 44 (68.8%) still needed extended medical management for a limited period. Texas A&M adds that a cat may not improve much until the stitches dissolve after about a month, with monthly rechecks in between.
- Full-mouth was not better than partial-mouth. The authors found the extent of extraction was not associated with overall response and concluded that full-mouth extraction "did not appear to provide additional benefit" over removing the premolars and molars. Whether your cat's canines and incisors can stay is a call for your veterinary dentist, but it is a fair question to ask, and on WebVet's ranges the difference can be $700 or more.
Can cats live without teeth? Yes. VCA notes that when tooth removal is needed, "cats still do very well," and many eat normally once the gums heal. For a cat whose mouth hurt every time it ate, the trade is usually worth it.
Stem Cell Therapy for Stomatitis: What the Trials Show
For the cats that do not respond to extraction, UC Davis researchers led by Dr. Boaz Arzi have tested intravenous infusions of each cat's own fat-derived (adipose) stem cells. In their multicenter study in Stem Cell Research & Therapy (2020), 18 cats aged 3 to 11 at UC Davis, Cornell and two private dental practices had not responded to full-mouth extraction performed at least six months earlier. Thirteen of 18 (72%) responded: five recovered completely and eight showed marked improvement, typically within three to six months. Two caveats keep this a rescue option rather than a shortcut:
- It did not work instead of extraction. In a follow-up study (Arzi et al., Journal of Feline Medicine and Surgery, 2021), five cats given stem cells before full-mouth extraction showed no or only mild improvement.
- The evidence base is small. The 2024 Veterinary Evidence summary rated the evidence "moderate": five trials, small samples, no independent control groups, and four of the five from the same research group. WebVet lists the therapy at $2,000–$4,000+ where it is available.
Does Pet Insurance Cover Cat Stomatitis?
Yes, if the policy started before the disease did. Spot Pet Insurance's stomatitis guide states it plainly: "Accident and illness policies generally help cover diagnosed dental illnesses like stomatitis, as long as the condition isn't pre-existing at enrollment." Four details decide how much you actually get back:
- Pre-existing conditions. Stomatitis builds over months, and annual-exam notes such as "gingivitis" or "oral inflammation" can be enough for an insurer to treat it as pre-existing. Enrolling while your cat's mouth is still healthy is the only reliable fix.
- Dental sub-limits. Embrace's coverage page says "Dental illness can be applied for up to $1,000 per policy term/year for covered conditions" — well below a $1,500–$4,000+ full-mouth extraction. Other insurers pay dental illness from the main annual limit; check the policy wording before you buy.
- Routine cleanings are separate. Preventive cleanings are excluded from accident-and-illness plans and are only reimbursed through a wellness add-on. Accident-only plans do not cover stomatitis at all.
- Experimental care. Coverage for stem cell therapy varies; get written confirmation from the insurer before treatment.
Here is how a $3,000 full-mouth extraction plays out with a $250 deductible and 90% reimbursement (illustrative; deductible and limit order can differ by insurer):
| Scenario | Insurer pays | You pay |
|---|---|---|
| No insurance | $0 | $3,000 |
| Dental paid from the main annual limit | $2,475 (($3,000 − $250) × 90%) | $525 |
| $1,000 dental-illness cap | $1,000 | $2,000 |
| Stomatitis already in the records at enrollment | $0 | $3,000 |
At NAPHIA's average accident-and-illness premium of $36.25 per month for cats, a year of coverage costs about $435, less than the gap between the capped and uncapped rows above. For the wider dental picture, see our guide to pet insurance for dental and our best pet insurance for cats comparison.
Spot says its accident-and-illness plans help cover diagnosed dental illness such as stomatitis when it is not pre-existing, and it offers annual limits up to unlimited; Fetch covers dental illness on all adult teeth with no prior-cleaning requirement. Quote while your cat's mouth is still healthy: once gingivitis or stomatitis is in the record, it is pre-existing.
Get Spot Quote → Get Fetch Quote →Frequently Asked Questions
What is stomatitis in cats?
Stomatitis in cats, called feline chronic gingivostomatitis (FCGS), is severe, long-lasting inflammation of the gums and the lining of the mouth, especially at the back of the mouth beside the molars. Texas A&M's veterinary college describes it as the immune system overreacting to dental plaque and says it affects fewer than 12% of cats. VCA notes the exact cause is unknown and that FIV and FeLV may play a role.
How much does it cost to treat stomatitis in cats?
WebVet's 2026 U.S. price table lists $800 to $1,500 for a partial-mouth extraction (the teeth behind the canines), $1,500 to $4,000 or more for a full-mouth extraction, and $3,000 to $5,000 or more at a board-certified veterinary dentist. Lifelong medical management runs about $30 to $80 per month, and stem cell therapy $2,000 to $4,000 or more where it is available.
Does full-mouth extraction cure stomatitis in cats?
Often, but not always. In the largest outcome study (Jennings et al., JAVMA 2015, 95 cats), 28.4% had complete resolution, 39.0% improved substantially, 26.3% improved little, and 6.3% did not improve. Of the cats that resolved or improved substantially, 68.8% still needed extended medication for a period, and full-mouth extraction did not do better than extracting only the premolars and molars.
Can a cat live with stomatitis without extractions?
Medication such as pain relief, anti-inflammatories, and antibiotics can control flare-ups, but a 2024 Veterinary Evidence summary notes that spontaneous recovery from feline chronic gingivostomatitis has never been reported. At $30 to $80 per month, five years of medical management costs about $1,800 to $4,800, similar to an extraction, which is why most veterinary dentists recommend surgery.
Is stem cell therapy an option for cat stomatitis?
For cats that do not respond to extraction, yes. In a 2020 multicenter study (Arzi et al., Stem Cell Research & Therapy), 13 of 18 cats that had not responded to full-mouth extraction improved after infusions of their own fat-derived stem cells: five recovered completely and eight improved markedly. A 2021 follow-up found it did not work when given before extraction, and the evidence base is still small.
Does pet insurance cover stomatitis in cats?
Accident-and-illness pet insurance covers stomatitis as a dental illness when it is not pre-existing at enrollment, typically at 70% to 90% after the deductible. Check for dental sub-limits: Embrace caps dental illness at $1,000 per policy term. Routine cleanings are not covered without a wellness add-on, and accident-only plans exclude stomatitis.
Last updated: October 31, 2026
Disclaimer: This article is for general information only and is not veterinary or insurance advice. Whether your cat needs extractions, which teeth to remove, and whether medication or stem cell therapy is appropriate are decisions for your veterinarian or a board-certified veterinary dentist. Prices are published ranges, not quotes; costs and coverage terms change, so check each policy's wording before enrolling.