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Dental Plaque in Dogs

Author: Dr. med. vet. Gisa Löwe | Last modified: 17.02.2026

When to visit the vet?

Home care monitor at home and contact your vet if worse

YELLOW with gingivitis, bad breath, pain when chewing, or if the animal drops food.

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Definition

Dental plaque, also known as plaque, is a soft, sticky buildup on dogs’ teeth made up of bacteriaBacteria are microscopic, single-celled organisms that exist in almost every environment on Earth. Some types of bacteria are beneficial or even essential to life, while others can cause disease., saliva, and food debris. It can harden and turn into tartar (calculus), which can become a serious dental health issue.

Can Occur with the Following Diseases:

Basics and possible causes

Dental plaque in dogs forms when bacteriaBacteria are microscopic, single-celled organisms that exist in almost every environment on Earth. Some types of bacteria are beneficial or even essential to life, while others can cause disease. build up in the mouth. These bacteriaBacteria are microscopic, single-celled organisms that exist in almost every environment on Earth. Some types of bacteria are beneficial or even essential to life, while others can cause disease. feed on leftover food particles and create a sticky film that deposits on the teeth. Over time, this film can harden into tartar (calculus), which can then lead to further complications such as gum disease.

Plaque formation is a natural process influenced by various factors. These include the dog’s diet, genetic predispositions, age, and oralOral means "through the mouth" and refers to the intake of food, medication, or other substances through the mouth. In veterinary medicine, many treatments are administered orally. hygiene. Dogs that are fed mainly soft food have a higher risk of dental plaque because the food doesn’t provide enough abrasion to keep the teeth clean.

Another factor is age. Older dogs are more likely to develop dental plaque because dental care is often neglected and natural tooth wear progresses. Certain breeds are also more prone to dental problems due to their genetic predispositionA predisposition is an innate inclination or susceptibility of an organism to certain diseases or conditions. In dogs and cats, there may be a genetic predisposition to certain conditions such as hip dysplasia or certain heart diseases., especially smaller breeds with more crowded teeth.

Typical accompanying symptoms

Bad breath: A common accompanying symptom of dental plaque is an unpleasant odor from the dog’s mouth, caused by bacteriaBacteria are microscopic, single-celled organisms that exist in almost every environment on Earth. Some types of bacteria are beneficial or even essential to life, while others can cause disease..
Reddened or swollen gums: Inflammatory conditions in the mouth, especially along the gum line, may indicate the presence of dental plaque.
Bleeding gums: Bleeding may occur when chewing or brushing teeth, which is a sign of gingivitis caused by plaque.
Difficulty eating: Dogs may hesitate to eat or chew because gingivitis or tooth pain makes eating uncomfortable.
Discolored teeth: Yellowish or brownish discoloration on the teeth often signals the presence of plaque or tartar (calculus).
Increased salivation: Excessive salivation may indicate discomfort in the mouth caused by dental plaque.

When to see a vet?

A visit to the veterinarian is advisable if the dog shows signs of dental plaque that cannot be improved with simple measures. It is particularly important to see a veterinarian if the dog is in pain, no longer wants to eat, or shows other behavioral changes that indicate discomfort.

With advanced symptoms such as severe bad breath, significant tooth discoloration, or visible gum inflammation, a veterinarian should be consulted to rule out or treat possible dental disease. A veterinary exam is also necessary if the dog shows signs of bleeding gums or is withdrawing more than usual.

Symptom recognition for the pet owner and veterinary diagnostic procedure

Owners can spot dental plaque by regularly inspecting their dog’s mouth. Noticeable signs include tooth discoloration, bad breath, and visible inflammatory conditions of the gums. However, only a veterinarian can carry out an accurate examination.

The veterinarian will thoroughly examine the dog’s oralOral means "through the mouth" and refers to the intake of food, medication, or other substances through the mouth. In veterinary medicine, many treatments are administered orally. cavity and check the teeth for plaque and tartar (calculus). In some cases, an X-rayX-ray is an imaging technique that uses X-rays to create images of the inside of the body. It is often used to diagnose bone fractures, lung diseases, and other conditions. may be needed to assess the severity of the dental problems. This helps identify any bone damage or hidden inflammatory conditions.

With a professional dental cleaning, the veterinarian can remove existing dental plaque and tartar (calculus). In severe cases, a tooth extraction may also be necessary if the teeth have been irreparably damaged.

What the pet owner can do and professional therapy options

Owners can help with preventionPrevention includes measures taken to prevent diseases or injuries. In veterinary medicine, this includes vaccinations, parasite control, and health monitoring. and relief of dental plaque by brushing their dog’s teeth regularly. Special dog toothbrushes and toothpastes are suitable for this because they are safe for dogs. Regular toothbrushing can significantly reduce plaque formation.

A balanced diet that also includes hard chew items or special dental-care food can also help prevent dental plaque. These products promote natural tooth abrasion and reduce plaque buildup.

It is also advisable to include regular veterinary checkups in the dog’s care plan. The veterinarian can perform professional dental cleanings that go beyond what is possible at home, helping to protect the dog’s dental health long term.

Outlook on current research

Research into dental plaque in dogs has made significant progress in recent years, particularly in preventionPrevention includes measures taken to prevent diseases or injuries. In veterinary medicine, this includes vaccinations, parasite control, and health monitoring. and treatment. Scientists are currently studying the microbiota found in dental plaque to better understand which bacterial species contribute most to plaque formation. These studies show that mechanisms similar to those in humans also play a role in dogs. The composition of microbes in a dog’s mouth can be influenced by genetic factors, diet, and overall health. Researchers are working to develop effective measures to inhibit the growth of these bacteriaBacteria are microscopic, single-celled organisms that exist in almost every environment on Earth. Some types of bacteria are beneficial or even essential to life, while others can cause disease. and reduce plaque formation.

Another important area of research focuses on the role of diet in the formation of dental plaque. Studies have shown that certain diets can reduce the risk of plaque formation by containing specific ingredients that promote oralOral means "through the mouth" and refers to the intake of food, medication, or other substances through the mouth. In veterinary medicine, many treatments are administered orally. health. These include, for example, special fibers or additives such as zinc salts that have antibacterial properties. New feed formulations and chew toys are being developed and tested to find out which are most effective at promoting dental health.

In addition, research is being conducted into vaccines designed to stimulate a dog’s immune systemThe immune system is the body's defense system against infectious agents such as bacteria, viruses, fungi, and parasites. It comprises a complex network of organs, cells, and molecules that work together to protect the body. to fight specific bacteriaBacteria are microscopic, single-celled organisms that exist in almost every environment on Earth. Some types of bacteria are beneficial or even essential to life, while others can cause disease. involved in plaque formation. Although this research is still at an early stage, initialInitial means beginning or at the start. In medicine, it can refer to the first symptoms of a disease or the first phase of a treatment process. results suggest that such vaccines have the potential to significantly slow the progressionProgression refers to the advancement or worsening of a disease over time. It describes an increase in the severity or extent of the disease symptoms. of dental disease. Combining vaccines with other preventive measures could play an integral role in dogs’ oralOral means "through the mouth" and refers to the intake of food, medication, or other substances through the mouth. In veterinary medicine, many treatments are administered orally. care in the future.

The development of new technologies for early detection of dental plaque is another advance in research. With imaging methods and chemical analyses, veterinarians can already detect plaque at a very early stage, enabling early intervention. However, these technologies are not yet widely used and are in the testing phase to evaluate their effectiveness and practicality for everyday use.

Research also emphasizes the social component of dental hygiene in dogs. Studies show that owners who regularly pay attention to their dogs’ dental care and educate themselves about oralOral means "through the mouth" and refers to the intake of food, medication, or other substances through the mouth. In veterinary medicine, many treatments are administered orally. health are less likely to have dogs with severe dental problems. Education programs and workshops are being developed to raise awareness of the importance of dental care and to give owners practical tips on how to improve their dogs’ dental health.

A growing trend in research is investigating genetic predispositionA predisposition is an innate inclination or susceptibility of an organism to certain diseases or conditions. In dogs and cats, there may be a genetic predisposition to certain conditions such as hip dysplasia or certain heart diseases. to dental plaque in different dog breeds. Some breeds are more prone to plaque formation than others due to their genetic predispositionA predisposition is an innate inclination or susceptibility of an organism to certain diseases or conditions. In dogs and cats, there may be a genetic predisposition to certain conditions such as hip dysplasia or certain heart diseases.. Identifying genetic markers could enable targeted preventionPrevention includes measures taken to prevent diseases or injuries. In veterinary medicine, this includes vaccinations, parasite control, and health monitoring. in the future by providing dogs at increased risk with specific treatments or diets to promote dental health.

Another exciting field is research into the effects of dental plaque on dogs’ overall health. There is evidence that chronicChronic refers to a condition or disease that is long-lasting or permanent. Chronic diseases often develop slowly and can lead to persistent or recurring health problems over time. dental disease could be associated with other health problems such as heart disease or diabetes. Research into these connections is crucial for developing comprehensive treatment strategies that promote not only dental health but also the animals’ overall well-being.

New products to reduce dental plaque in dogs are also being intensively researched. These include special toothpastes containing enzymesEnzymes are biological catalysts that accelerate specific chemical reactions in the body without being consumed. They play a crucial role in virtually all physiological processes. that can help break down plaque, as well as mouth rinses and gels containing antibacterial agents. These products are tested for safety and effectiveness to ensure they are safe for daily use in dogs.

In summary, research on dental plaque in dogs is diverse and dynamic. The combination of genetic studies, the development of new products and technologies, and increased awareness of dental care among dog owners helps improve dogs’ oralOral means "through the mouth" and refers to the intake of food, medication, or other substances through the mouth. In veterinary medicine, many treatments are administered orally. health and enhance their quality of life.

Frequently asked questions

1. What are the most common signs of dental plaque in dogs?

The most common signs of dental plaque in dogs are bad breath, yellowish deposits on the teeth, and in advanced cases, inflammatory conditions of the gums. It can also cause bleeding gums and difficulty eating.

2. How often should I brush my dog's teeth to avoid plaque?

Ideally, a dog’s teeth should be brushed daily to prevent plaque buildup. If daily brushing isn’t possible, it should be done at least two to three times a week.

3. Can dental plaque in dogs disappear on its own?

Dental plaque usually does not go away on its own. Without regular dental care, it can harden into tartar (calculus), which can lead to serious dental problems.

4. Is dental plaque painful in dogs?

Dental plaque itself does not usually cause pain, but it can lead to gingivitis or periodontitis, which are painful.

5. What role does diet play in the formation of dental plaque?

Diet plays a significant role in the formation of dental plaque. A balanced diet with special dental-care food can help reduce plaque formation.

6. Should I use special toothpaste for my dog?

Yes, it’s important to use toothpaste made specifically for dogs, because human toothpaste can contain ingredients that are harmful to dogs. Dog toothpaste is formulated to be safe and effective for dogs’ dental care.

7. Can chew toys help reduce dental plaque?

Yes, chew toys can help mechanically remove dental plaque. They encourage chewing, which cleans the teeth and reduces plaque formation.

8. Are there breeds that are more prone to dental plaque?

Yes, some small breeds such as Yorkshire Terriers or Dachshunds are more prone to plaque formation because of their tooth structure and mouth size. A genetic predisposition can also play a role.

9. Can my dog use a human toothbrush?

It is recommended to use special dog toothbrushes designed for the shape of a dog’s mouth. They are often softer and have a more comfortable grip for dogs’ dental care.

10. When should I see a veterinarian if I notice dental plaque in my dog?

If you notice dental plaque on your dog, it’s a good idea to have the teeth examined at the next veterinary visit. However, if there are signs of gum inflammation or severe bad breath, you should see a veterinarian promptly.