강아지 잇몸 과증식(특발성·약물 유발) 증상과 원인, 진단·치료와 관리 포인트 총정리

Gum Overgrowth in Dogs (Idiopathic and Drug-Induced): Symptoms, Causes, Diagnosis, Treatment, and Management Essentials

Oral HealthDiseasesMeongsiljang Veterinary Advisory Board

Gum overgrowth in dogs is a condition where the gum tissue enlarges abnormally, with idiopathic and drug-induced causes being the primary factors. Early detection and proper management are essential.

Gingival Hyperplasia in Dogs Is a Condition in Which Gum Tissue Abnormally Enlarges

The inside of a puppy's mouth with excessively enlarged gums

Gingival hyperplasia in dogs is a condition in which the gum tissue abnormally enlarges. As the gums thicken and cover the teeth, pseudopockets—false pockets—form between the teeth and gums. Affected dogs may have difficulty eating, drool excessively, experience loose or falling teeth, and develop bad breath. Because this condition can lead to periodontitis, tooth loss, and, in severe cases, pathological jaw fractures, early detection is crucial.

The Main Causes Are Genetic Predisposition and the Use of Certain Medications

The main causes of gingival hyperplasia in dogs include breed-related genetic predispositions and the use of certain medications. - Genetic factors: Gingival hyperplasia and epulis are more commonly reported in brachycephalic breeds, such as Boxers, indicating a known breed-specific predisposition. - Drug-induced factors: While some medications are known to be associated with abnormal proliferation of gingival tissue, it is difficult to pinpoint specific drugs based solely on the textbook evidence provided. Dogs taking medications require careful monitoring. Early detection and identification of the cause aid in treatment, so be sure to accurately inform your veterinarian of any medication history during visits.

A veterinarian examining a puppy's gums.

Primary Signs Include Swollen Gums, Loose Teeth, and Bad Breath

The primary signs of gingival hyperplasia in dogs begin with swollen gums and thickened tissue around the teeth. This can progress to loose or falling teeth, pain while eating, bad breath, drooling, and difficulty swallowing. If left untreated, this condition can lead to periodontal disease, tooth loss, and even pathological jaw fractures over time. Owners often miss early warning signs such as decreased food intake and behaviors like pawing at the mouth or frequently opening it.

Gingival Swelling: Inflammation and thickening of the gum tissue surrounding the teeth.

Tooth Loss: Abnormal gum tissue growth and periodontal damage can cause teeth to become loose or fall out.

Bad Breath: Unpleasant odor worsens due to bacterial overgrowth and trapped food particles in the mouth.

Refusal to Eat: Pain or discomfort may cause your dog to avoid eating.

Repeated Pawing or Opening of the Mouth: Discomfort or pain may lead to frequent pawing at the mouth or repeated opening of the jaw.

The inside of a puppy's mouth, where the teeth are covered by excessive gum growth

Symptoms Requiring Immediate Veterinary Care

If your dog’s gums become severely overgrown, causing teeth to loosen or fall out, accompanied by a strong foul odor from the mouth and a complete refusal to eat, immediate veterinary care is necessary. This is because there is a high risk of worsening pain, periodontal disease, and tooth loss. Especially if these symptoms appear in a dog currently taking medication, you should consult your veterinarian right away.

Diagnosis Is Made Through Oral Examination and Radiographs

Gingival hyperplasia in dogs is diagnosed through oral examinations and dental radiographs. - Oral examination: The veterinarian directly assesses gum thickness, the degree of tooth exposure, and any signs of bleeding. - Radiographs: X-rays are essential for evaluating tooth root integrity and detecting bone loss in the surrounding structures. - Biopsy: If suspicious lesions are present, a tissue sample may be taken to determine the exact cause. Veterinarians also consider the dog’s medication history and genetic predispositions. Since early diagnosis significantly impacts treatment outcomes, please visit a clinic promptly if you notice any concerning symptoms.

An X-ray image showing the dental and skeletal structure of a dog

Treatment Involves Surgical Removal and Medication Management

Treatment for gingival hyperplasia involves a combination of surgical removal and medication management. - Surgical removal: Excessively enlarged gum tissue is surgically trimmed back to normal levels to securely protect the teeth. - Medication review: If a specific medication is causing the condition, it is important to switch to an alternative drug. - Infection prevention: Anti-inflammatory drugs or antibiotics may be used temporarily to prevent infection. - Regular care: Periodic oral examinations remain necessary even after surgery. The success of treatment depends on early intervention and consistent care.

A veterinarian performing gum surgery on a puppy

Home Care Centers on Regular Oral Hygiene and Dietary Adjustments

After managing gingival hyperplasia, regular oral hygiene and proper dietary adjustments are essential. We recommend brushing your pet’s teeth one to two times daily, and you can also use treats or products designed to help remove tartar. Opt for softer foods rather than hard ones that may strain the teeth, and ensure the diet doesn’t irritate the gums. Consistent oral care and regular dental check-ups are known to help reduce the risk of recurrence.

Regular Toothbrushing: Brush one to two times daily with a soft-bristled toothbrush, reaching along the gumline.

Tartar-Reducing Treats: These products help reduce tartar buildup on the teeth.

Soft Food Options: Choose softer foods that are less likely to irritate the teeth.

Water After Meals: Encourage drinking water after meals to help rinse away food particles.

Certain Breeds Have a Higher Risk of Recurrence and Require Caution

Brachycephalic breeds, including Boxers, are reported to have a genetic predisposition to gingival hyperplasia and epulis. For these breeds, regular oral examinations are recommended, and caution is advised when administering medications; always consult your veterinarian before starting any treatment. However, evidence precisely comparing the incidence risk across different breeds remains limited.

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

Will gum overgrowth completely disappear after treatment?

Symptoms typically improve after surgical removal, but there is a risk of recurrence if genetic predispositions or causative medications persist. Regular ongoing care is essential.

What should I do if my pet develops excessive gum growth while taking medication?

You should consult your veterinarian right away to discuss adjusting the medication or considering an alternative. Stopping the medication abruptly can have adverse effects on your pet’s health.

What should I do if my dog refuses to eat due to excessive gum tissue growth?

Refusing food can be a sign of pain, so an immediate visit to the vet is necessary. The veterinarian may recommend pain relievers or special diets.

Can gum overgrowth be prevented?

While genetic predisposition is difficult to prevent, you can reduce the risk of onset by maintaining regular oral care and being cautious when administering medications.

Does gingival hyperplasia require tooth extraction?

Teeth only need to be extracted if they are loose or damaged. In most cases, gum surgery alone can help preserve the teeth.

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References

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[2] Hoehne SN, Hopper K. Hypersensitivity and anaphylaxis. In: Drobatz KJ, Hopper K, Rozanski E, Silverstein DC, editors. Textbook of small animal emergency medicine. Hoboken, NJ: John Wiley and Sons; 2019.

[3] Kimmoun A, Novy E, Auchet T, et al: Hemodynamic consequences of severe lactic acidosis in shock states: from bench to bedside, Crit Care 19(1):175, 2015.