Dental disease is the most common health problem in dogs and cats — and one of the most overlooked. By age three, most pets already show signs of oral disease that can affect their overall health.

How Common Is It?

The American Veterinary Medical Association (AVMA) reports that by age three, 80% of dogs and 70% of cats show some evidence of periodontal disease. It starts with plaque buildup, progresses to tartar (calculus), and can lead to gingivitis, tooth loss, and bone deterioration. But the consequences extend far beyond the mouth.

The Systemic Connection

Bacteria from periodontal disease can enter the bloodstream and affect major organs. Research published in the Journal of Veterinary Dentistry has shown links between dental disease and heart, liver, and kidney problems in both dogs and cats. A 2019 study found that dogs with severe periodontal disease had a significantly higher risk of endocarditis (heart valve infection).

Signs to Watch For

Bad breath is not normal — it's often the first sign of dental disease. Other signs include difficulty eating or dropping food, pawing at the mouth, drooling, swollen or bleeding gums, loose teeth, and reluctance to have their face touched. Many pets hide pain well, so regular veterinary dental exams are essential.

Prevention at Home

Daily tooth brushing is the gold standard for preventive dental care. The Veterinary Oral Health Council (VOHC) recommends using a pet-specific toothpaste (never human toothpaste, which contains fluoride and xylitol that are toxic to pets) and a soft-bristled brush. Start slowly, letting your pet taste the toothpaste first, then gradually introducing the brush. Even a few seconds of brushing daily makes a significant difference.

Dental chews, water additives, and dental diets can supplement brushing but shouldn't replace it. Look for products with the VOHC seal of acceptance, which indicates they've been tested and proven effective at reducing plaque or tartar.

Professional Cleanings

Annual or biannual professional dental cleanings under anesthesia are recommended by most veterinary dentists. Anesthesia allows for thorough cleaning below the gumline, dental X-rays, and treatment of any problems found. Non-anesthetic dental cleanings are widely criticized by veterinary dental specialists — the American Veterinary Dental College states they provide only cosmetic improvement and cannot address disease below the gumline.