Understanding Your Pet’s Dental Health

By Sophie Kininmonth · 9 Dec 2025 (updated 21 Jul 2026) ·7 min read

Dental disease is one of the most common health problems in adult dogs and cats, and it rarely announces itself early. Plaque starts as a soft film, hardens into tartar, and irritates the gums until the damage reaches the structures that hold the teeth in place. The good news is that most of it is preventable with a routine you can build at home. The catch is that much of the disease lives under the gumline, where a quick look in the mouth cannot reach. Learning the signs you can spot, understanding what vets can only see under anaesthetic, and keeping plaque control boring and consistent is the whole game.^{1, 2}

Why dental health matters for dogs and cats

Plaque left alone hardens into tartar (calculus) and irritates the gums. Over time that irritation can progress to periodontal disease, which is damage to the gum and supporting structures around the teeth. It is one of the most common problems seen in adult pets, and it can be painful even when your pet is still eating normally.^{1, 2}

Severe dental disease does not stay politely in the mouth. Inflamed gums can allow bacteria to enter the bloodstream, and chronic oral infection is associated with impacts on overall health. The exact risk to any individual pet varies, but the direction is clear: a healthy mouth is part of a healthy body.²

Signs of dental disease you can spot at home

Dental disease is surprisingly easy to miss because pets adapt. They switch to softer chewing, swallow more quickly, or eat on one side. A quick home check, done when your pet is calm and it is safe to do so, helps you catch changes early, before pain and tooth loss set in.¹

Bad breath that appears or worsens over a short period.¹
Red, swollen, or bleeding gums, especially along the gumline.¹
Yellow-brown tartar build-up, often most obvious on the back teeth.¹
Dropping food, chewing on one side, slower eating, or refusing harder foods.¹
Pawing at the mouth, facial sensitivity, or avoiding being touched around the head.¹

Common dental problems

Periodontal disease is the big one: gum inflammation and infection that can progress to loss of attachment and bone around the teeth. It tends to worsen with age and is more likely in pets with crowded mouths, often smaller dogs.²

Tooth resorption is especially important in cats. Parts of the tooth structure break down and the lesion can be painful, even if the crown looks only mildly abnormal on casual inspection. These lesions are often confirmed with dental radiographs.²

Gingivitis means inflamed gums. It is sometimes reversible, but it can also be the doorway to deeper periodontal disease if plaque control does not improve.^{1, 2}

A few things make dental disease more likely. Age matters, because disease tends to accumulate over years. Small body size and crowded teeth create more plaque-retaining nooks. And no home care lets plaque return quickly after a professional clean, so brushing and other controls need to be in place.^{2, 1, 3}

How a pet's mouth works

Dogs and cats have teeth built for gripping, tearing, and shearing rather than steady grinding. That shape, plus the way they chew, means plaque tends to cling along the gumline and on the outer surfaces of the back teeth, exactly where a quick glance often misses it.¹

Incisors: small front teeth used for nibbling and grooming.
Canines: long teeth for gripping and holding.
Premolars and molars: shearing and crushing, and common sites for tartar build-up, especially in dogs.

Vet check-ups and what to expect

An awake dental check at the vet is a useful screen. It can spot obvious tartar, gum inflammation, broken teeth, and painful mouths. But it cannot show what is happening under the gumline, and that is where much of the disease lives.⁴

A full dental examination and professional cleaning is typically done under general anaesthetic, often with dental radiographs (X-rays). This allows a complete look at all tooth surfaces, probing around each tooth, cleaning beneath the gumline, and identifying hidden disease that may not be visible externally. Dental radiographs matter because normal-looking teeth can still hide significant problems. AAHA notes studies where clinically important findings were detected radiographically in a substantial proportion of teeth that looked grossly normal on visual examination alone.^{4, 5}

A practical baseline is an annual vet visit that includes an oral check, with frequency adjusted to the individual pet based on age, breed, past dental disease, and what you are seeing at home. Your vet may recommend earlier reviews if tartar is building quickly, gums are inflamed, or your pet is showing mouth pain.^{1, 4}

Home dental care that actually helps

Think of home care as plaque control, not tartar removal. Once tartar has hardened, it generally needs professional scaling. The aim at home is to stop that hardening cycle from re-establishing itself after a clean.⁴

Daily brushing is the gold standard. Even a few times a week still helps, and consistency is what counts. Use toothpaste made for pets, because human toothpaste is not safe for animals to swallow, and cats in particular can become unwell if they ingest common human formulations.^{1, 6}

Start with brief, calm sessions, seconds at first, then build up.⁷
Begin by touching lips and gums gently, then introduce brushing motions with a finger brush or soft brush.⁷
Focus on the outer tooth surfaces along the gumline, where plaque builds fastest.⁷
Stop before your pet struggles. The goal is tolerance over time, not one heroic session.

Some dental diets, chews, and water additives can reduce plaque or tartar. Look for products with evidence behind them, such as those carrying the Veterinary Oral Health Council (VOHC) Seal of Acceptance, which indicates data has been reviewed against set standards for plaque and calculus reduction. These products can support brushing, especially when brushing is not daily, but they do not replace a proper dental examination and professional cleaning when disease is already established.^{8, 9, 4}

Professional dental cleaning

A professional clean is more than a quick scrape. Under general anaesthetic, the team can scale above and below the gumline, polish the teeth to slow plaque re-attachment, take dental radiographs where indicated, and treat problems found during the examination, including extractions if a tooth is painful or unsalvageable.^{4, 5}

Your clinic will usually advise fasting beforehand because anaesthetic is involved. You will also be asked about existing health conditions and medications, and your vet may recommend pre-anaesthetic blood tests depending on your pet's age and health status.⁴

Diet and dental health

Diet affects the mouth, but it is not a magic fix. Some veterinary dental diets are designed to mechanically reduce plaque and tartar through kibble size and texture. Wet food on its own does not cause dental disease, but it also does not provide the same mechanical abrasion that certain dental diets can offer. Most pets still need brushing and periodic veterinary checks regardless of whether they eat wet, dry, or mixed diets.^{4, 9}

Keeping dental health on track for life

Good dental care is mostly routine: a quick look in the mouth now and then, an annual vet check that includes teeth and gums, and a brushing habit that becomes as ordinary as filling the water bowl. When professional dental work is needed, anaesthetic and dental radiographs are not frills. They are how vets find the disease that hides under the gumline and treat it properly.^{4, 5}

If you have noticed bad breath, gum redness, changes in eating, or mouth sensitivity, book a vet check. Dental pain tends to move quietly, then all at once.¹

References

Sophie Kininmonth

Dog lover and writer at My Pets Australia, sharing practical breed guides and care advice for Australian pet owners.