What gingivitis is
Gingivitis means inflammation of the gums. In dogs it is usually caused by plaque, the sticky bacterial film that forms on teeth. When plaque stays on the teeth, and especially when it hardens into tartar, the bacteria irritate the gum edge. Gingivitis is the earliest stage of gum disease. If it is not addressed, it can progress to periodontal disease, which affects the tissues and bone that hold the teeth in place and can lead to pain, infection, and tooth loss.
Mild gingivitis is often reversible, which is why catching it early matters.
Gingivitis symptoms in dogs
Signs can be subtle, and dogs often hide pain. Watch for:
- Red or swollen gums, sometimes a red line where the gum meets the tooth
- Bleeding from the gums, especially when chewing or being brushed
- Bad breath that is stronger than usual
- Yellow or brown tartar on the teeth (see dog tartar removal methods)
- Drooling or extra saliva
- Pawing at the mouth, rubbing the face, or pulling away when the mouth is touched
- Eating more slowly, dropping food, chewing on one side, or avoiding hard food or toys
- In more advanced cases, loose teeth, facial swelling, or weight loss
How to check your dog’s gums at home
Do this in good light when your dog is calm. Gently lift the lip and look at the line where the gums meet the teeth. Healthy gums are usually a fairly uniform color and are firm, without redness or swelling along the edge. Many dogs have naturally pigmented (dark or spotted) gums, which can make redness harder to see, so it helps to learn what your own dog’s mouth normally looks like. Taking a photo every month or so lets you compare.
If your dog resists, do not force it. Resistance can itself be a sign of pain. Stop and ask your vet to take a look.
What causes gingivitis
Plaque buildup is the most common cause. Other things can contribute or look similar, including:
- Retained baby teeth or crowded teeth that trap debris
- Dental injuries
- Breed differences, with some dogs simply more prone
- Irritants
- Certain illnesses, such as kidney disease, infections, immune-related mouth conditions, or growths in the mouth
Because gum redness can have other causes, a vet exam is how you find out which applies.
Can mild gingivitis go away?
Early gingivitis can often improve once plaque is removed and kept away, because the damage is limited to inflamed gum tissue. In practice that usually means a vet check, a professional cleaning if tartar is present, and consistent home care afterward. Brushing alone may be enough in the very mildest cases, but your vet should confirm this. If inflammation has already led to bone loss or loose teeth, that damage does not simply reverse, and treatment focuses on stopping progression and relieving pain.
Treatment options for gum disease
Professional cleaning and assessment
The foundation of treatment is usually a dental cleaning under general anesthesia. The vet scales the teeth above and below the gumline, probes the gum pockets, and takes dental X-rays to look for hidden disease. Anesthesia is needed because the important work happens below the gumline, and it also allows pain control. If your dog’s mouth looks very inflamed or sore, your vet may talk with you about the timing of treatment.
Extractions and other care
Teeth that are loose or badly diseased may need to be removed so that infection and pain do not continue. Sometimes antibiotics or pain relief are prescribed, and sometimes blood tests or tissue samples are recommended to rule out another illness. Follow your vet’s instructions exactly, and do not give human medications. See dog post dental surgery care for what recovery often looks like.
Home care afterward
After treatment, home care is what keeps gingivitis from returning:
- Daily brushing with dog toothpaste is the usual recommendation (our guide to your dog’s teeth shows how to build the habit).
- VOHC-accepted chews, water additives, or dental diets may add some support if your vet agrees.
- Regular veterinary dental checks help catch relapses early.
When gingivitis becomes periodontal disease
If plaque and tartar remain, inflammation can extend deeper, damaging the ligament and bone that anchor the tooth. This is periodontal disease. It is often painful, it can lead to abscesses and tooth loss, and bacteria from inflamed gums can enter the bloodstream. Veterinary sources describe links between severe dental disease and problems elsewhere, though how strong those links are in individual dogs is something your vet can discuss.
When to see a vet
See your veterinarian soon if you notice red, swollen, or bleeding gums, strong mouth odor, drooling, pawing at the mouth, or changes in how your dog eats. Seek prompt care for facial swelling, pus, a loose tooth, or if your dog stops eating. If an older dog has mouth problems along with other changes, such as weight loss, increased thirst, vomiting, or tiredness, mention all of it to your vet, because mouth signs can sometimes go along with illness elsewhere in the body. Our guide to senior dog health issues covers other changes to watch for in older dogs.
This article is general information and not a substitute for veterinary diagnosis.