Is Your Dog’s Bad Breath a Sign of Dental Disease?

Most dogs will not have perfectly fresh breath all the time. However, a strong or unpleasant smell that keeps returning should not simply be accepted as normal “dog breath”. Persistent bad breath is often one of the earliest signs of dental disease. Plaque, tartar, inflamed gums and unhealthy teeth can all produce noticeable odours, sometimes before a dog shows any obvious signs of pain.

Dental disease is extremely common in dogs. According to the American Veterinary Medical Association, periodontal disease affects nearly 80% of dogs by three years of age. Much of the problem can also be hidden beneath the gumline, making regular veterinary dental assessments important.

How Dental Disease Develops

Plaque is a soft, sticky film containing bacteria, saliva and food particles. It begins forming on the teeth soon after eating.

When plaque is not regularly removed, it can harden into tartar. The rough surface of tartar allows more bacteria to collect, particularly around the gumline.

Initially, the gums may become red, swollen or sensitive. This early inflammation is known as gingivitis. As the condition progresses, infection and inflammation can move beneath the gums and affect the structures supporting the teeth.

Advanced periodontal disease may cause:

• Persistent bad breath
• Painful, inflamed or bleeding gums
• Gum recession
• Loose or damaged teeth
• Infection around the tooth roots
• Loss of supporting bone
• Difficulty eating comfortably

Although tartar may be visible above the gumline, the extent of dental disease cannot always be judged by looking at the teeth alone.

Dogs Do Not Always Show Dental Pain Clearly

Many dogs continue eating even when their mouth is uncomfortable. Rather than refusing food completely, they may quietly change how they eat or behave.

Signs to watch for include:

• Chewing more slowly
• Dropping food from the mouth
• Chewing mainly on one side
• Preferring softer food
• Avoiding hard treats or toys
• Drooling more than usual
• Pawing or rubbing at the mouth
• Pulling away when the face is touched
• Becoming less interested in games
• Appearing quieter or more irritable
• Losing weight

Bad breath may be the first change you notice. A normal appetite does not necessarily mean your dog’s teeth and gums are healthy.

Could Something Else Be Causing the Smell?

Dental disease is a frequent cause of bad breath, but it is not the only possibility.

Something trapped in the mouth

Food, grass, hair, bone fragments or another small object may become lodged between the teeth or around the gums.

A trapped object can irritate the surrounding tissue and produce a strong smell as bacteria accumulate. Your dog may also drool, paw at the mouth or suddenly become reluctant to eat.

A broken or infected tooth

Teeth can be fractured through accidents or chewing very hard objects. A damaged tooth may expose sensitive internal tissue and allow infection to develop.

The affected tooth may become discoloured, painful or surrounded by swelling.

Mouth ulcers or abnormal tissue

Ulcers, wounds, infections and abnormal growths inside the mouth may also cause bad breath.

Blood-stained saliva, facial swelling, difficulty swallowing or a visible lump should always be examined by a veterinarian.

An underlying illness

Occasionally, a change in breath may be associated with a condition elsewhere in the body.

A sweet or unusual chemical smell may occur with diabetes, while ammonia-like breath can sometimes be associated with kidney disease. These smells cannot diagnose an illness, but they are important changes to mention to your veterinarian.

What Happens During a Dental Assessment?

Your veterinarian will initially examine your dog’s teeth, gums, tongue and surrounding tissues while your dog is awake. They will look for tartar, gum inflammation, loose or damaged teeth, swelling and anything caught inside the mouth.

However, a conscious examination cannot show everything. A large portion of every tooth is located below the gumline, where painful disease may be hidden.

A comprehensive dental assessment and professional clean are performed under general anaesthesia. This allows the veterinary team to examine the entire mouth safely and thoroughly without causing fear, discomfort or sudden movement.

Dental radiographs may be recommended to assess the tooth roots and supporting bone. They can reveal disease that is not visible above the gums.

Depending on the findings, treatment may involve:

• Removing plaque and tartar from above and below the gums
• Polishing the teeth
• Assessing gum pockets
• Taking dental radiographs
• Treating or extracting painful teeth
• Providing appropriate pain relief
• Developing an ongoing home-care plan

North Road Veterinary Centre has an onsite dental facility for the assessment and treatment of dental disease.

How Can You Support Your Dog’s Teeth at Home?

Home dental care is most effective when it is introduced before advanced disease develops or after existing dental problems have been treated.

Brush regularly

Toothbrushing is one of the most effective ways to reduce plaque.

Use toothpaste formulated specifically for dogs. Human toothpaste is not suitable for pets to swallow and may contain unsafe ingredients.

Introduce brushing gradually:

1. Allow your dog to taste a small amount of pet toothpaste.
2. Practise gently lifting the lips and touching the teeth.
3. Introduce a soft pet toothbrush or finger brush.
4. Brush the outside surfaces using gentle circular movements.
5. Keep early sessions brief and finish with praise or a reward.

Plaque tends to accumulate quickly on the cheek-facing surfaces of the upper teeth, making these areas particularly useful to target.

Do not begin brushing if your dog already has significant bad breath, red gums or signs of mouth pain. Arrange an assessment first.

Select dental products carefully

Dental chews, diets, gels and water additives may support oral care, but products vary considerably.

Look for products recommended by your veterinarian or carrying the Veterinary Oral Health Council seal for plaque or tartar control. These products have been reviewed against established standards for their specific dental claim.

Avoid extremely hard objects

Bones, antlers and other very hard objects may be strong enough to fracture teeth. Choose appropriately sized, veterinary-recommended toys and chews instead.

Include the mouth in routine check-ups

Regular veterinary examinations provide an opportunity to identify developing dental problems before they become more painful.

Some dogs, including small breeds and those with previous dental disease, may require more frequent professional care.

When Should You Book an Appointment?

Arrange a dental check if your dog has:

• Bad breath that persists
• Yellow or brown tartar
• Red, swollen or bleeding gums
• A loose, broken or discoloured tooth
• Difficulty chewing
• Drooling or blood in the saliva
• Facial swelling
• Changes in appetite or behaviour

Seek prompt advice if your dog stops eating, appears distressed or struggles to swallow.

Help Your Dog Eat, Play and Smile Comfortably

Dental disease affects more than the appearance of your dog’s teeth. A painful mouth can change how they eat, play and interact with the family.

Brushing and suitable dental products can help prevent plaque from building up, but they cannot repair a damaged tooth or treat infection beneath the gums.

If you have noticed persistent bad breath or a change in your dog’s eating habits, contact our team to arrange a dental assessment.