Symptoms and Treatment of Feline Periodontal Disease

Oral HealthQ&AMeongsiljang Veterinary Advisory Board

Feline periodontal disease is a common oral condition found in most cats over the age of three. We’ve compiled a guide based on veterinary textbooks, covering how to distinguish symptoms across stages 1 to 4, treatment options, and home care tips.

What Is Feline Periodontal Disease and Why Is It Dangerous?

Illustration of a cat undergoing a dental examination

Feline periodontal disease is one of the most commonly diagnosed conditions in veterinary medicine, making it a very prevalent oral health issue. Periodontal disease is an inflammatory condition affecting the gums and the tissues that support the teeth. It often begins with red, swollen gums, but if left untreated, it can lead to the resorption of the bone supporting the teeth, resulting in tooth loss or even fractures of the weakened jawbone. However, many cats with periodontal disease do not show obvious external symptoms. If your cat seems to experience pain while eating or develops a noticeably bad breath, the condition may have already progressed, so it is advisable to suspect periodontal disease.

Suspect Periodontal Disease If You Notice These Symptoms

In fact, many cats with periodontal disease show no obvious outward symptoms. That’s why it’s important to regularly check your cat’s mouth, and as the condition progresses, you may notice the following signs:

Bad breath: A noticeably stronger odor than usual. This is one of the most common indicators that might suggest periodontal disease.

Gum changes: The gums appear red and swollen, or bleed easily when touched.

Changes in appetite: Your cat may want to eat but drops food while chewing, or chews on only one side of the mouth.

Drooling: Excessive drooling compared to normal, or drool that contains blood.

Rubbing the face: Scratching around the mouth with the front paws or rubbing the face against the floor.

Reduced grooming: Due to mouth pain, your cat may neglect grooming, leading to a messy coat.

However, these symptoms often appear only after the disease has progressed to some extent. Therefore, even if no symptoms are present, it’s important to have regular check-ups that include a dental examination under anesthesia and dental radiographs.

Stages 1–4: How Periodontal Disease Progresses

Feline periodontal disease can be understood by dividing it into stages based on its progression. Below is a summary of each stage to help you grasp the severity more easily.

Stage	Condition	Main Symptoms	Treatment Approach
Stage 1	Inflammation limited to the gums	Redness of the gums, mild bad breath	Recoverable with home care and scaling
Stage 2	Early damage to periodontal tissues	Gum bleeding, formation of periodontal pockets	Scaling + treatment of periodontal pockets
Stage 3	Moderate loss of periodontal tissues	Tooth mobility, pain	Extraction may be considered
Stage 4	Severe loss of periodontal tissues	Tooth loss, bone damage	Extraction required

However, the exact staging and treatment plan can only be determined after a thorough examination under anesthesia, including dental radiographs, to assess the condition beneath the gums, the tooth roots, and the bone.

Causes and Risk Factors of Periodontal Disease

Periodontal disease begins with plaque. Plaque is a biofilm formed by oral bacteria on the tooth surface, composed of a complex mix of bacteria, minerals, and proteins. When this plaque hardens, it becomes tartar, which can penetrate below the gumline and cause inflammation.

Age: The incidence increases as cats reach adulthood, so older cats require particular attention.

Diet and Habits: Consistent oral hygiene and dietary management play a crucial role in preventing plaque accumulation and tartar formation.

Breed: Certain breeds are more prone to developing periodontal disease.

Compromised Immunity: Cats infected with Feline Immunodeficiency Virus (FIV) or Feline Leukemia Virus (FeLV) may experience more severe progression of periodontal disease.

Illustration comparing healthy teeth with teeth covered in plaque

Visit the Vet Immediately If You See These Symptoms

If your cat completely refuses to eat, has pus draining from the gums, or shows swelling on one side of the face, please visit a veterinary clinic immediately. These symptoms may indicate a progressing periodontal abscess or severe infection. Advanced periodontitis is dangerous not only because of the intense pain it causes, but also because it weakens the bone supporting the teeth, potentially leading to pathological jaw fractures. Prompt veterinary care is essential.

Diagnosis and Treatment of Periodontal Disease

Periodontal disease treatment varies depending on the stage of progression.

Scaling (tartar removal): This is the most effective treatment for stages 1 and 2. Under general anesthesia, an ultrasonic scaler removes tartar, and the tooth surfaces are polished smooth to slow down the reaccumulation of plaque.

Periodontal pocket treatment: Deep pockets (periodontal pockets) that have formed between the gums and teeth are treated with specialized instruments. Your veterinarian may also prescribe appropriate antibiotics based on the condition.

Extraction: This is performed in stages 3 and 4 when the tooth cannot be saved. Removing painful teeth often makes cats more comfortable and can help restore their appetite.

Dental radiographs taken under anesthesia are essential for diagnosis, as they allow us to examine the condition of the tooth roots and bone, which are not visible during a visual exam.

Illustration of a cat receiving dental treatment at a veterinary clinic

Home Care and Prevention Methods

Periodontal disease is best managed through prevention and early intervention.

Brushing: The most effective approach is daily brushing with a cat-specific toothbrush and toothpaste. Start by letting your cat get accustomed to the taste of the toothpaste.

Dental treats and toys: If brushing isn’t feasible, consider using dental treats or toys designed to help reduce tartar buildup.

Regular oral exams: Schedule an oral examination at your veterinary clinic at least once a year. Dental radiographs taken under anesthesia can reveal hidden issues that aren’t visible during a routine check.

Dietary management: Consult your veterinarian about prescription diets formulated to help prevent tartar accumulation.

An illustration of a cat with dental care tools.

Also Check for Tooth Resorption

In addition to periodontal disease, cats are prone to a feline-specific dental condition called tooth resorption. This condition causes the teeth to gradually dissolve, and it may not be visible on the surface. Since it often occurs alongside periodontal disease, it is important to include dental radiographs during veterinary dental examinations.

Reviewed by a veterinarian

Dr. Tony — Punnawat Phongkittirak

Veterinarian

A veterinarian who majored in veterinary medicine at Khon Kaen University, Thailand, and completed the IVSA program at North Carolina State University in the United States. Drawing on clinical experience at animal hospitals, he works in the pet healthcare field and is dedicated to building a digital care environment that connects pet parents with veterinarians.

Frequently Asked Questions

Is general anesthesia always required for cat dental scaling?

Yes, since cats can’t stay still with their mouths open, general anesthesia is essential for safe and accurate treatment. We’ll conduct a pre-anesthesia blood test and health check to ensure everything proceeds safely.

Wouldn't they be unable to eat if you pull out their teeth?

There’s no need to worry. Cats can eat their food just fine without teeth. In fact, once painful teeth are extracted, the pain goes away and most cats regain their appetite.

When should you start brushing your cat’s teeth?

It’s best to start from a young age, but even adult cats can learn with patience and gradual acclimation. Begin by gently letting your cat get used to having their gums touched with your finger, then introduce the taste of cat-specific toothpaste before moving on to using a toothbrush.

Does scaling without anesthesia also work?

Non-anesthetic scaling only removes visible tartar. Since periodontitis is best managed through anesthesia-assisted examination and treatment, which allows for probing and evaluation below the gumline, non-anesthetic procedures cannot remove subgingival tartar or treat periodontal pockets, making their effectiveness limited. Please consult with your veterinarian to decide on the best course of action.

Can periodontal disease lead to other health problems?

Periodontal disease is the most commonly diagnosed condition in veterinary medicine. If left untreated, bacteria and their byproducts cause inflammation that destroys the gums and the bone supporting the teeth, which can lead to tooth loss or pathological fractures in weakened jawbones. Therefore, regular oral care and check-ups are essential.

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References

[1] Clinical Medicine of the Dog and Cat, 4th Ed — Chapter 5: Diseases of the Oral Cavity and Teeth

[2] The Cat, Clinical Medicine and Management, 2nd Edition — Chapter 24: Dental and Oral Disease

[3] 100 Top Consultations in Small Animal General Practice — Chapter 36: Dental Disease (Norman Johnstone)