Periodontal disease is the most common disease of adult dogs, with over 80% of dogs over three years old showing some degree of dental pathology. Despite its prevalence, dental disease is chronically underrecognised and undertreated, causing significant and preventable suffering.
Dental disease follows a predictable progression. Plaque — a film of bacteria — accumulates on tooth surfaces within hours of cleaning. Without removal, plaque mineralises into calculus (tartar) within days. Calculus provides a rough surface for further plaque accumulation and cannot be removed by brushing. Sub-gingival plaque causes gingivitis (gum inflammation) — the earliest, reversible stage of periodontal disease. If untreated, gingivitis progresses to periodontitis — destruction of the periodontal ligament and alveolar bone supporting the teeth. Advanced periodontitis causes tooth loss, jaw fractures, and oronasal fistulae (abnormal connections between mouth and nasal cavity).
Dental pain is chronic, persistent, and often silent in dogs. Dogs rarely vocalise dental pain even when disease is severe — they continue to eat, masking the degree of discomfort from owners. Signs that alert observant owners include: preference for soft food, dropping food, pawing at the mouth, reduced enthusiasm for toys, changed chewing behaviour, halitosis, and weight loss. The constant low-level oral pain of moderate-to-severe periodontal disease impairs quality of life profoundly over the years it persists before diagnosis.
Advanced periodontal disease has systemic consequences beyond the mouth. Bacteraemia (bacteria entering the bloodstream from infected gingival sulci) has been associated with endocarditis, kidney disease, and liver damage in dogs. Though causation is complex, epidemiological associations between periodontal disease severity and organ pathology provide additional rationale for early dental intervention.
Thorough dental assessment requires anaesthesia for complete intraoral radiography. Conscious examination provides a limited view — pathology below the gumline, which accounts for most significant dental disease, is invisible without anaesthesia and radiography. All dental procedures should include full-mouth radiography as standard; surveys consistently show that radiography identifies additional pathology in over 50% of cases that appeared normal on conscious examination.
Professional dental cleaning under anaesthesia with ultrasonic scaling and polishing removes calculus and smooths enamel surfaces. Extraction of non-viable teeth (those with >50% bone loss, root exposure, or fractures extending below the gumline) addresses pain sources. Post-extraction analgesia is essential. Dogs typically show remarkable behavioural improvement after dental treatment — increased energy, improved appetite, and return to play — confirming the degree of pre-treatment discomfort that owners had not recognised.
Daily toothbrushing with veterinary toothpaste is the most effective home preventive measure, reducing plaque accumulation and delaying progression to calculus. Dental chews with proven efficacy (VOHC-approved products), dental gels, and water additives provide additional benefit. Starting dental care from puppyhood as part of normal handling creates dogs that tolerate brushing throughout life. Dry kibble has no proven advantage over wet food for dental health despite common belief.
Small and toy breeds are disproportionately affected by dental disease due to tooth crowding in small jaws. Brachycephalic breeds have severe dental crowding with abnormal tooth eruption. Giant breeds are prone to tooth fractures. Breed-specific dental care plans should address these predispositions with appropriate examination frequency.
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