고양이 치주질환 단계별 관리 증상과 원인, 진단·치료와 관리 포인트 총정리

Why Does My Cat Have Bad Breath? — Symptoms, Causes, and Treatment of Periodontal Disease by Stage

Oral HealthDiseasesMeongsiljang Veterinary Advisory Board

Feline periodontal disease is a common condition that begins with inflammation of the tissues surrounding the teeth and can progress to tooth loss. Proper, stage-appropriate management is essential.

Feline Periodontal Disease Is a Condition in Which Inflammation of the Tissues Surrounding the Teeth Progresses Gradually

Feline periodontal disease is a condition characterized by inflammation and infection in the tissues that support the teeth, including the gums, alveolar bone, and periodontal ligaments. In most cases, it progresses gradually with few visible symptoms in the early stages. - Plaque accumulation: Plaque is a biofilm formed by the buildup of oral bacteria on tooth surfaces, and it is the direct cause of periodontal disease. - Tartar formation: When plaque hardens, it becomes tartar. Although the amount of tartar does not necessarily correlate with the severity of the disease, it creates an environment where bacteria can easily thrive. - Gum bleeding: Bleeding from the gums during brushing or probing is often the earliest sign, and bad breath indicates that attention is needed. - Tooth loosening: As the disease progresses, teeth may become loose or fall out. Early diagnosis and management are critical for preserving teeth.

The Main Cause of Periodontal Disease Is the Accumulation of Plaque and Tartar on the Tooth Surface

The primary cause of feline periodontal disease is plaque, a biofilm composed of oral bacteria that accumulates on the tooth surface. - Plaque Formation: A thin film called the pellicle first forms on the tooth surface. Bacteria adhere to this pellicle, forming colonies that mature into established plaque. - Tartar Hardening: Over time, plaque combines with minerals to harden into tartar (calculus), which becomes difficult to remove with toothbrushing alone. - Inflammation: Bacteria within the plaque and their byproducts irritate the gums, triggering inflammation characterized by swelling and bleeding. - Risk Factors: The frequency and severity of periodontal disease increase with age. Progression is accelerated by systemic conditions such as diabetes, or by dental factors that create rough surfaces conducive to plaque accumulation, including crowded teeth, malocclusion, and tooth resorption. Early prevention is essential.

Microscopic image of plaque and tartar buildup on a cat's teeth

Check the Main Symptoms and Signs of Periodontal Disease

The early signs of feline periodontal disease are often subtle, but careful observation can help you catch them. Here are the most common symptoms:

Gum swelling: The gums appear red or swollen.

Bleeding: Bleeding from the gums may occur while eating.

Bad breath: A noticeable foul odor emanates from the mouth.

Reluctance to eat: The cat may avoid opening its mouth or refuse food.

Rubbing the mouth: Increased scratching or licking around the mouth.

A cat rubbing its mouth and showing signs of discomfort

Symptoms Requiring Immediate Veterinary Visit

If your cat has severe bad breath, refuses to eat, resists opening its mouth, or has bleeding gums, consult a veterinarian immediately. This indicates that periodontal disease has progressed to a serious stage.

Various Examinations Are Necessary for an Accurate Diagnosis

An accurate diagnosis of periodontal disease requires a professional examination by a veterinarian. - Clinical Examination: The veterinarian directly assesses the condition of the teeth, gum swelling, bleeding, and the degree of tooth mobility. - Dental Radiography: Essential for detecting bone loss or root damage. - Blood Tests: Used to rule out systemic diseases and evaluate the patient’s condition prior to treatment. - Diagnostic Criteria: The stage is classified based on a comprehensive assessment of pocket depth and inflammation severity. Early detection increases the success rate of treatment.

Radiographic images of periodontal disease in a cat's jawbone

Treatment Is Conducted Step-by-Step, and Professional Management Is Essential

Periodontal disease treatment is approached step-by-step, depending on the stage of progression. - Initial treatment: Professional scaling and polishing remove plaque and tartar to reduce inflammation. - Moderate to advanced cases: Under general anesthesia, dental radiographs are taken and subgingival root planing (tartar removal) is performed; extractions are carried out if necessary. - Surgical intervention: In cases of severe tooth mobility or significant bone loss, periodontal surgery or extraction is performed to resolve pain and infection. - Treatment planning: The veterinarian develops a customized treatment plan tailored to the patient’s condition. - Ongoing care: After treatment, regular professional scaling under anesthesia and daily home care are essential.

A veterinarian performing a dental scaling on an anesthetized cat.

Home Care Is the Key to Treatment Success

Consistent home care is essential even after treatment. Here are some practical care tips to follow:

Brushing teeth: Brush your cat’s teeth daily using a toothbrush and toothpaste specifically designed for cats.

Dental treats: Offer special treats that help reduce tartar buildup.

Water-soluble toothpaste: Adding water-soluble toothpaste to your cat’s drinking water can also be helpful.

Regular check-ups: Have your cat’s teeth examined by a veterinarian every six months.

A cat having its teeth brushed by a veterinarian or its owner.

Precautions by Cat Breed and Prevention of Recurrence

Cats with crowded teeth, short muzzles (brachycephalic breeds), or malocclusion are more prone to plaque buildup and thus at higher risk for periodontal disease. Regular care and check-ups are especially essential for brachycephalic cats like Persians. Early detection and consistent home care are key to preventing recurrence.

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

Can feline periodontal disease be cured?

With early detection and appropriate treatment, symptoms can be controlled and teeth can be preserved. While initial gingivitis confined to the gums can often be reversed with home care, once the periodontal tissues are damaged, complete reversal is difficult, and ongoing management is essential.

My cat hates having its teeth brushed. What should I do?

Introduce the habit gradually. Start by gently wiping your cat’s teeth with your finger, and once they’re comfortable, transition to using a toothbrush. Cat-specific toothpaste is safe if swallowed.

Do dental tartar-removing treats really work?

Some treats can help reduce tartar buildup, but they’re not a complete substitute for professional care. Regular dental cleanings are still essential.

Is it possible to thoroughly clean your pet’s teeth without anesthesia?

It’s impossible to thoroughly clean a cat’s teeth without anesthesia. When a cat is stressed, it becomes difficult to work safely, and accurate diagnosis and treatment are compromised.

Does periodontal disease always require tooth extraction?

If the teeth are loose or there is significant bone loss, extraction may be necessary. However, our goal is to preserve as many teeth as possible. Your veterinarian will make the final determination.

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References

[1] Clinical Medicine of the Dog and Cat, 4th Ed, 2023

[2] The Cat, Clinical Medicine and Management, 2nd Edition, 2021

[3] Handbook of Veterinary Pharmacology, 2022