Home » Diseases » In dogs » Periodontitis (Gum Disease)

Periodontitis (Gum Disease) in Dogs

Occurrence: common
Location of illness: Head/Neck

Author: Dr. med. vet. Gisa Löwe | Last modified: 06.11.2025

Periodontitis is an inflammatory condition of the supporting tissues of the teeth in dogs, caused by the accumulation of plaque and 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.. It leads to gum inflammation, tissue breakdown, and can ultimately result in tooth loss.

The most important facts at a glance

Periodontitis in dogs is caused by the accumulation of plaque, a film 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. on the teeth. If plaque is not removed, it hardens into tartar (calculus), which pushes 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. under the gums and causes inflammation. This affects the gums, the tissue, and the bone that supports the teeth. 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. such as Porphyromonas play a key role, as they release 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. and toxins that damage the tissue. 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 in smaller breeds, and inadequate 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 increase the risk. Symptoms include increased salivation, bad breath, and bleeding gums. DiagnosisA diagnosis is the identification of a disease or condition by its symptoms and/or results from diagnostic tests. It is the first step in the management and treatment of patients. is made by clinical examination and X-rays, often under anesthesiaAnesthesia refers to the state of insensitivity to pain and can be partial (local anesthesia) or for the entire body (general anesthesia). It is used to keep patients pain-free during surgical procedures.. Treatment includes professional dental cleaning, antibiotics, and tooth extractions if necessary. Long-term 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 at home is crucial. Research focuses on the study of bacterial flora, genetic predispositions, and new therapeutic approaches such as probiotics and anti-inflammatory drugsAnti-inflammatory drugs are medications that reduce inflammation. They can be divided into nonsteroidal anti-inflammatory drugs (NSAIDs) and corticosteroids and are used in dogs and cats to reduce Inflammatory conditions and Pain.. Preventive measures include regular brushing, a balanced diet, and veterinary check-ups.

Causes

Periodontitis develops when plaque accumulates on the teeth. Plaque is a soft, sticky film 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. that forms on the teeth. If it is not removed regularly, it hardens into tartar (calculus), which pushes the 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. under the gums and causes inflammation. This inflammation affects not only the gums but also the underlying tissue and the bone that supports the teeth.

An important factor in the development of periodontitis is bacterial colonization. Various types 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., including Porphyromonas, are known to cause periodontitis. 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. release 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. and toxins that damage the tissue.

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. also plays a role. Certain dog breeds are more prone to dental problems, especially smaller breeds with narrower interdental spaces, which promote plaque accumulation. Age is also a risk factor, as older dogs have a higher likelihood of developing gum disease.

Inadequate oral hygiene is one of the most common causes. If a dog’s teeth are not brushed regularly, plaque and tartar (calculus) can easily accumulate. An unhealthy diet, especially one high in sugar, can also increase the risk, as sugar is a breeding ground for 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..

Symptoms

Very common symptoms:

Common symptoms:

A common symptom of periodontitis is bad breath. This is caused by the 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. that multiply in the 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. Dogs with periodontitis may also have difficulty eating, especially as the condition progresses and causes pain.

Additionally, redness and swelling of the gums may occur. In advanced periodontitis, the gums may bleed, especially when eating or chewing. Gum recession is another sign, where the gums recede from the tooth, exposing the tooth roots.

In more severe cases, tooth loosening and eventually tooth loss can occur. As the disease is painful, a dog may also show signs of discomfort or pain, such as avoiding hard food or toys.

Diagnosis

The diagnosisA diagnosis is the identification of a disease or condition by its symptoms and/or results from diagnostic tests. It is the first step in the management and treatment of patients. of periodontitis begins with a thorough clinical examination of the mouth by a veterinarian. The veterinarian will look for signs of gum inflammation, tartar (calculus), and tooth loosening. A thorough examination often requires anesthesiaAnesthesia refers to the state of insensitivity to pain and can be partial (local anesthesia) or for the entire body (general anesthesia). It is used to keep patients pain-free during surgical procedures. to allow for a complete examination of the 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.

X-rays are an important diagnostic tool to determine the extent of the disease, especially the bone loss around the teeth. These images help assess the extent of the damage and plan the appropriate treatment.

In addition, the veterinarian may order a microbiology test to identify the type 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. causing the infection. This can help select the most appropriate antibiotics to treat the infectionAn infection is the colonization and multiplication of pathogens such as bacteria, viruses, fungi, or parasites in an organism, which often, but not always, leads to a disease..

Therapy

Treatment for periodontitis typically requires professional dental cleaning under anesthesiaAnesthesia refers to the state of insensitivity to pain and can be partial (local anesthesia) or for the entire body (general anesthesia). It is used to keep patients pain-free during surgical procedures.. This involves removing tartar (calculus) and polishing the teeth to prevent the accumulation of new plaque. In severe cases, tooth extraction may be necessary, especially if the teeth are loose or severely damaged.

Antibiotics may be prescribed to combat the bacterial infectionAn infection is the colonization and multiplication of pathogens such as bacteria, viruses, fungi, or parasites in an organism, which often, but not always, leads to a disease.. In some cases, a special mouthwash or gel containing chlorhexidine may be recommended to reduce the number 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..

Pain management is another important aspect of treatment. Pain relievers may be prescribed to alleviate pain and inflammation, especially after invasiveInvasive describes medical procedures or pathogens that enter the body or penetrate tissue. In medicine, invasive procedures can range from minimally invasive techniques to open surgery. procedures.

In the long term, regular dental care at home is crucial to prevent recurrence of periodontitis. This may include daily brushing with a special dog toothpaste and the use of dental toys.

Prognosis and follow-up care

The prognosis for dogs with periodontitis largely depends on the severity of the disease and the effectiveness of the treatment. With early diagnosisA diagnosis is the identification of a disease or condition by its symptoms and/or results from diagnostic tests. It is the first step in the management and treatment of patients. and treatment, the prognosisThe prognosis is the prediction of the likely course and outcome of a disease based on the general state of health, the nature of the disease, and the response to treatment. It can provide information on how a disease is expected to develop. is generally good, and 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 the disease can be slowed or stopped.

In advanced cases, where significant bone loss and tooth loosening have already occurred, the prognosisThe prognosis is the prediction of the likely course and outcome of a disease based on the general state of health, the nature of the disease, and the response to treatment. It can provide information on how a disease is expected to develop. may be less favorable. In such cases, permanent tooth loss may occur, which can affect the dog’s quality of life.

However, with good 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 and regular veterinary check-ups, the risk of recurrence of the disease can be significantly reduced.

Prevention

The most effective preventionPrevention includes measures taken to prevent diseases or injuries. In veterinary medicine, this includes vaccinations, parasite control, and health monitoring. against periodontitis is regular dental care at home. This includes daily brushing with a toothpaste specially developed for dogs. Soft-bristled toothbrushes are ideal to avoid injuring the gums.

A balanced diet can also help reduce the risk of dental problems. Special dental care treats and toys can keep teeth clean and reduce plaque formation.

Regular veterinary check-ups are crucial to detect and treat dental problems early. The veterinarian may recommend professional dental cleanings, which should be done at least once a year.

Lastly, it is important to watch for signs of dental problems and seek veterinary advice immediately if symptoms such as bad breath, bleeding gums, or difficulty eating occur.

Outlook on current research

Current research on periodontitis in dogs focuses on a variety of aspects to deepen the understanding of this widespread disease and to develop new treatment approaches. A significant area of research is the investigation of the microbial flora in the mouth of dogs. Scientists are working to identify the specific types 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. that are associated with the development and 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 periodontitis. Through the use of modern sequencing technologies, researchers can more accurately analyze the diversity and composition of microbial communities.

Another interesting area of research is the 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. of dogs to periodontitis. Studies have shown that certain breeds are more susceptible to gum disease, suggesting genetic factors. Researchers are currently investigating the genetic markers associated with an increased susceptibility to periodontitis in order to improve diagnosisA diagnosis is the identification of a disease or condition by its symptoms and/or results from diagnostic tests. It is the first step in the management and treatment of patients. and preventionPrevention includes measures taken to prevent diseases or injuries. In veterinary medicine, this includes vaccinations, parasite control, and health monitoring. and potentially develop targeted breeding programs that reduce the risk.

In addition, intensive work is being carried out on the development of new therapeutic approaches. The use of probiotics to promote a healthy 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. flora and to suppress pathogenic 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. is a promising approach. 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. studies suggest that probiotic preparations could help alleviate the symptoms of periodontitis and 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 the disease.

Furthermore, there is research on the use of anti-inflammatory drugsAnti-inflammatory drugs are medications that reduce inflammation. They can be divided into nonsteroidal anti-inflammatory drugs (NSAIDs) and corticosteroids and are used in dogs and cats to reduce Inflammatory conditions and Pain. specifically developed for the treatment of periodontitis in dogs. These drugs aim to reduce the body’s inflammatory response to the bacterial infectionAn infection is the colonization and multiplication of pathogens such as bacteria, viruses, fungi, or parasites in an organism, which often, but not always, leads to a disease., which in turn could minimize tissue damage.

In the long term, innovative technologies such as laser therapyTherapy refers to the treatment of diseases or disorders with the aim of alleviating symptoms, promoting healing, or improving quality of life. Therapies can be medicinal, surgical, or through other medical interventions. or regenerative techniques that promote the growth of new gum and bone tissue could also play an important role in the treatment of periodontitis. Although these approaches are still in the experimental phase, they offer promising prospects for the future therapyTherapy refers to the treatment of diseases or disorders with the aim of alleviating symptoms, promoting healing, or improving quality of life. Therapies can be medicinal, surgical, or through other medical interventions. of this disease.

Frequently asked questions (FAQs)

What is periodontitis in dogs? Periodontitis is an inflammatory condition that affects the gums and supporting structures of the teeth. It is caused by the accumulation of plaque and 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. along the gum line, which leads to inflammation and, if left untreated, tooth loss.
What symptoms do dogs with periodontitis show? The most common symptoms include bad breath, red or bleeding gums, difficulty chewing, tooth loss, and changes in chewing behavior. In severe cases, abscesses and infections can occur that can spread to other areas of the body.
How is periodontitis diagnosed in dogs? DiagnosisA diagnosis is the identification of a disease or condition by its symptoms and/or results from diagnostic tests. It is the first step in the management and treatment of patients. is usually made by a thorough dental examination by the veterinarian. This includes inspection of the 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, X-rays to assess bone substance, and possibly blood tests to determine the extent of the disease.
Can periodontitis be cured in dogs? While complete cure of periodontitis is difficult, the condition can be well controlled with regular dental care and professional dental cleanings. The treatment aims to reduce inflammation and 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 the disease.
How often should I brush my dog’s teeth to prevent periodontitis? Ideally, your dog’s teeth should be brushed daily to remove plaque and 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.. If that is not possible, brushing should be done at least several times a week. The use of a special dog toothbrush and toothpaste is important.
Are there special foods that can help prevent periodontitis? Yes, there are special dental care diets and treats that can help reduce the formation of plaque. These products are often formulated to mechanically clean the teeth or contain ingredients that inhibit bacterial growth.
Is periodontitis painful in dogs? Yes, periodontitis can be very painful. Inflamed gums and infected teeth can cause significant discomfort, which can make it difficult for the dog to eat. It is important to watch for signs of pain, such as loss of appetite or hesitation when chewing.
Which breeds are particularly susceptible to periodontitis? Smaller breeds such as Yorkshire Terriers, Miniature Poodles, and Chihuahuas are particularly susceptible to dental problems, including periodontitis. This is often due to the close arrangement of the teeth and genetic factors that affect these breeds.
Can home remedies help treat periodontitis? Home remedies such as rinsing with special solutions can help support 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 but do not replace professional dental cleaning by a veterinarian. It is important to discuss such measures with your veterinarian to ensure that they are safe and effective.
How often should my dog have a dental exam? It is recommended to have a dental examination at least once a year. However, dogs with known dental problems or a historyThe medical history is the systematic collection of a patient's medical history through questioning. It includes information about previous illnesses, treatments, allergies, and lifestyle habits. of periodontitis should be checked more frequently to monitor the health of their teeth and gums.