By age 3, most dogs show some signs of periodontal disease — yet dental health is one of the most commonly neglected aspects of dog ownership. Dental disease is not just a mouth problem: bacteria from infected gums can enter the bloodstream and affect the heart, kidneys, and liver. The good news: daily brushing and regular monitoring can prevent most of it.
Why dental health matters
Periodontal disease — infection of the structures supporting the teeth — affects an estimated 80% of dogs over age 3. It progresses in stages:
- Plaque — a bacterial film that forms on teeth daily; removed by brushing
- Tartar (calculus) — plaque that hardens through mineralisation; cannot be removed by brushing alone once formed
- Gingivitis — inflammation of the gums; reversible with professional cleaning and improved home care
- Periodontal disease — infection below the gumline causing bone and tooth loss; not reversible
Small breeds are disproportionately affected due to tooth crowding in a small jaw. Brachycephalic breeds (Pugs, French Bulldogs, Shih Tzu, Chihuahua) are particularly prone.
How to brush your dog's teeth
The key is gradual introduction — not starting with a full brushing session on the first day. A step-by-step approach over 1–2 weeks produces a dog that accepts brushing as routine:
- Day 1–3: Let the dog lick dog toothpaste off your finger; praise and reward
- Day 4–7: Rub the toothpaste on the outside of the teeth with your finger; praise and reward
- Day 8–10: Introduce the toothbrush without paste; let the dog investigate; praise
- Day 11+: Combine toothbrush and paste; start with 20–30 seconds and build up over days
Focus on the outer surfaces of the teeth — these accumulate the most plaque. Use small circular or up-down motions at the gumline. The inner surfaces, while important, are naturally cleaned by the tongue and are secondary. A 45-degree angle to the gumline is most effective.
Use a finger toothbrush or soft-bristled toothbrush appropriate for your dog's size. For very small dogs, a fingertip brush provides better control.
Dental products that help
Not all dental products have evidence behind them. The Veterinary Oral Health Council (VOHC) independently evaluates and certifies products that have demonstrated plaque and tartar reduction. Look for the VOHC seal as the basic quality standard.
- Dental chews (VOHC-approved) — daily chews that mechanically reduce plaque; most effective in dogs that chew thoroughly rather than swallowing quickly
- Water additives — VOHC-approved additives added to drinking water; low compliance required from the dog; evidence is modest but supporting
- Dental diets — specific kibble designs that create a wiping action on teeth; useful as a supplement, not a replacement for brushing
- Dental wipes — useful for dogs that strongly resist brushes; less effective than brushing but better than nothing
Raw bones and hard chews (like antlers or hard nylon toys) can cause tooth fractures, particularly on carnassial (back) teeth. The 'knuckle test' guideline: if you would not feel comfortable hitting yourself on the knee with the chew, it is too hard for teeth. Consult your vet for specific product recommendations.
Professional dental cleaning
Once tartar has formed, only professional cleaning (under anaesthesia) can remove it. Professional cleaning involves:
- Pre-anaesthetic blood work (especially important for dogs over 5)
- Full examination of all teeth, gum pockets, and oral tissues
- Scaling above and below the gumline with ultrasonic scalers
- Polishing tooth surfaces
- Dental X-rays to assess below-gumline health (recommended at every cleaning)
- Extraction of compromised teeth if needed
Professional cleaning is safe for healthy dogs. The anaesthesia risk for a healthy young adult is very low. For senior dogs or those with health conditions, a vet assessment of anaesthetic risk is part of the process.
This is educational information about dental health. Consult your veterinarian for assessment and recommendations specific to your dog.
Frequently asked questions
- How often should I brush my dog's teeth?
- Daily is ideal — dental disease develops progressively and daily brushing is the most effective prevention. If daily is not possible, every other day provides meaningful benefit. Even 3 times per week is significantly better than not brushing at all. Consistency matters more than perfect technique.
- What toothpaste should I use for my dog?
- Always use dog-specific toothpaste. Human toothpaste contains fluoride (toxic to dogs if swallowed) and xylitol (highly toxic). Dog toothpastes come in palatable flavours (poultry, beef) and are designed to be safe when swallowed. The toothpaste enzyme or paste formulation matters less than consistent brushing action.
- Do dental chews actually work?
- Some do. The Veterinary Oral Health Council (VOHC) awards a seal of acceptance to products with clinical evidence of plaque and tartar reduction. Look for the VOHC seal. Products without it may have marketing claims but limited evidence. Dental chews are supplemental — they do not replace brushing and cannot reverse established tartar buildup.
- How often does a dog need a professional dental cleaning?
- It varies. Dogs with good home dental care (daily brushing from puppyhood) may need professional cleaning every 2–3 years. Small breeds typically need more frequent cleaning (annually or every 18 months) because their teeth are crowded in a smaller jaw. Your vet assesses dental health at annual checks and recommends cleaning timing.
- Is anaesthesia required for dog teeth cleaning?
- Full dental cleaning requires general anaesthesia. "Anaesthesia-free dentistry" — scraping visible tooth surfaces while the dog is awake — is opposed by major veterinary organisations because it cannot safely access below the gumline where disease develops, and it is stressful and potentially dangerous for the dog. Cleaning under anaesthesia is safe for healthy dogs and allows full examination and treatment.
