How do I know if my dog has dental disease?
Persistent bad breath, brown or yellow tartar along the gum line, red or bleeding gums, and dropping food while eating are the classic signs of canine periodontal disease. By age three, over 80% of dogs already have stage 1 or 2 disease, and untreated dental infection is linked to heart, kidney, and liver damage - so a photo check every month and a professional cleaning under anaesthetic every 12–18 months is the standard of care.
This page is general pet health information, not a diagnosis or treatment plan for your pet. Always confirm anything urgent with a licensed veterinarian.
When to see a vet today
See a vet today if you notice A lump, swelling, or draining sore on the muzzle below an eye - often a tooth root abscess, Bleeding gums with reluctance to eat for more than 24 hours, and Chattering jaw or pawing at the mouth in obvious pain. These are the signs that should not wait for home care or a watch-and-see approach. If any of them appear, skip the rest of this guide and call your vet or an emergency clinic now - waiting is the risky option.
- ●A lump, swelling, or draining sore on the muzzle below an eye - often a tooth root abscess
- ●Bleeding gums with reluctance to eat for more than 24 hours
- ●Chattering jaw or pawing at the mouth in obvious pain
- ●A fractured tooth with a pink or dark centre visible
Safe to monitor at home
Milder signs are usually safe to watch for a day or two: Mild plaque along the back teeth, Slightly stronger breath after wet food, and Occasional tartar you can chip off with a nail. Keep notes and photos so you can spot a trend. Anything that worsens, spreads, or comes with appetite, energy or behavior changes moves out of this category and into a vet visit.
- ●Mild plaque along the back teeth
- ●Slightly stronger breath after wet food
- ●Occasional tartar you can chip off with a nail
What to photograph or record
Photograph or record Gently lift the lip on each side and photograph the upper premolars and molars, One photo of the front incisors and canines with mouth relaxed, and One photo of the inside of the lower jaw with tongue lifted if your dog tolerates it in good, even light. Clear, well-framed evidence is what lets a vet - or a PetSenseAI scan - judge the change instead of guessing from a description. The checklist below is the exact shot list.
- Gently lift the lip on each side and photograph the upper premolars and molars
- One photo of the front incisors and canines with mouth relaxed
- One photo of the inside of the lower jaw with tongue lifted if your dog tolerates it
- Note any tooth that looks grey or fractured
Likely causes
The causes vets consider first for this presentation are plaque and tartar accumulation, gingivitis (stage 1), periodontitis (stages 2–4), and tooth root abscess. Most are manageable once identified, but they look similar from the outside, which is why a photo-based triage and, when needed, an exam matter more than guesswork.
Plaque and tartar accumulation
Plaque hardens into tartar within 72 hours. Small breeds, brachycephalics, and dogs on soft-only diets are highest risk.
Gingivitis (stage 1)
Red inflamed gum margin, reversible with cleaning and daily brushing.
Periodontitis (stages 2–4)
Bone loss around the tooth root, gum recession, mobility. Not reversible - requires professional cleaning and often extractions.
Tooth root abscess
Bacteria track up the root, often causing a swelling under the eye. Extraction or root canal required.
Fractured tooth
Common with antler and bone chews. Exposes the nerve - always painful, always needs treatment.
Safe home care
For mild cases, safe home care is brush daily with a pet-safe enzymatic toothpaste - never human toothpaste (xylitol is toxic), add a vohc-accepted dental chew or water additive, and swap bones and antlers for softer dental chews to prevent slab fractures. These steps comfort and monitor; they do not treat the underlying cause. Stop home care and call a vet if anything in the urgent list above appears or the trend moves the wrong way.
- -Brush daily with a pet-safe enzymatic toothpaste - never human toothpaste (xylitol is toxic)
- -Add a VOHC-accepted dental chew or water additive
- -Swap bones and antlers for softer dental chews to prevent slab fractures
- -Book an annual oral exam; most stage-2+ disease can only be seen on dental x-rays under anaesthesia
PetSenseAI is a triage and monitoring tool, not a substitute for veterinary care. Always confirm treatment plans with a licensed veterinarian.
Frequently asked
Can I remove tartar from my dog's teeth at home?
You can slow new plaque with daily brushing and dental chews, but hardened tartar below the gum line can only be removed with ultrasonic scaling under anaesthesia. Home scrapers risk fracturing enamel and leaving bacteria behind the gum where it does the real damage.
How much does a dog dental cleaning cost?
A routine cleaning under anaesthesia with pre-op bloodwork and dental x-rays typically costs $400–$900 in the US. Cleanings that include extractions can run $800–$2,500 depending on the number of teeth and complexity.
Is bad breath in dogs always dental?
About 80% of the time, yes. But sweet or fruity breath can signal diabetes, ammonia-like breath can point to kidney disease, and rotten breath with mouth ulcers can mean liver disease. A dental check that finds a healthy mouth should trigger bloodwork.
Do dental treats really work?
The ones stamped with the VOHC (Veterinary Oral Health Council) seal have proven plaque-reduction data. They are supplementary - no chew replaces brushing or a professional cleaning, but they meaningfully slow tartar between cleanings.
Related symptom guides
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Start a scanPetSenseAI is an AI-assisted triage and monitoring tool. It does not diagnose, treat, cure, or prevent any condition. Always consult a licensed veterinarian for any medical concern about your pet.
If your pet is in distress - collapse, laboured breathing, seizures, uncontrolled bleeding, suspected poisoning, bloat, or trauma - stop and contact an emergency veterinarian or a poison control line immediately. Do not wait for a scan result.