# Healthy vs Unhealthy Dog Teeth: Signs and What to Do Healthy dog teeth are clean, white, and free of heavy tartar, and the gums are pink and smooth, not red, swollen, or bleeding. Unhealthy dog teeth show plaque, brown buildup, bad breath, and gum inflammation that can progress to tooth loss if untreated. This article is educational and is not a substitute for veterinary diagnosis or treatment. ## Quick Answer - Healthy teeth look white to slightly off-white with no thick brown or gray crust along the gumline. Gums should be pink, firm, and not bleed when you touch them gently. - Warning signs include bad breath, red or swollen gums, bleeding, drooling, dropping food, chewing on one side, and loose or missing teeth. - Periodontal disease is the major reason for tooth loss in dogs, and it starts as reversible gingivitis before becoming irreversible periodontitis [1]. - A simple at-home check means lifting the lip, looking at both sides, and gently pressing the gum to see if it bleeds or hurts. - Book a veterinary dental exam if you see tartar, red gums, or bad breath that does not improve with home care. ## What Is Dog Dental Disease in Plain Words? Dog dental disease is a bacterial problem that starts on the tooth surface and spreads into the tissues that hold teeth in place. Plaque, a soft film of bacteria, forms daily on teeth. If it is not removed, it hardens into tartar (calculus), which gives bacteria a rough surface to cling to and keeps irritating the gums [2]. The first stage is gingivitis, which is inflammation of the gums. Gingivitis is reversible with treatment [1]. If it continues, the infection moves deeper into the ligaments and bone that anchor the tooth. That stage is periodontitis. It is irreversible and causes permanent loss of tooth support [1]. This matters because dental disease is not rare. Periodontal disease affects over 80% of dogs over 3 years of age [3]. In a survey of 12,753 pet owners, overall periodontal disease prevalence was 50.5% [4]. The difference between those numbers reflects how disease is measured and which dogs are included, but both point to the same message: dental disease is common, and early action matters. ## Healthy vs Unhealthy Dog Teeth and Gums: What You Will See The table below is a practical comparison, not a diagnostic chart. Use it to decide whether to watch, act, or call your veterinarian. | Feature | Healthy | Unhealthy | |---|---|---| | Tooth color | White to slightly off-white | Yellow, brown, or gray crust near the gumline | | Gum color | Pink and even | Red, dark red, or pale | | Gum texture | Firm and smooth | Swollen, puffy, or receding | | Breath | Mild or neutral | Strong, rotten, or metallic | | Bleeding | None with gentle pressure | Bleeds when you touch or brush | | Eating | Normal chewing on both sides | Chews on one side, drops food, avoids hard food | | Teeth | Firm in the socket | Loose, missing, or broken | | Drooling | Normal | Sudden drooling or pawing at the mouth | Tartar is more than a cosmetic problem. It acts as a reservoir for plaque and bacterial toxins that drive gum inflammation [2]. That is why a tooth that looks "just stained" can still be sitting in infected tissue. ## Signs Owners Notice First Most owners notice breath before they notice teeth. Bad breath is often the earliest clue that bacteria and inflammation are building up. Other common signs include: - Red or swollen gums, especially along the upper back teeth - Bleeding when your dog chews a toy or when you brush - Brown or yellow buildup on the back teeth - Drooling more than usual - Dropping food or chewing on one side - Reluctance to eat hard kibble - Pawing at the mouth or rubbing the face - Loose teeth or teeth that have already fallen out Some dogs hide mouth pain well. A dog who still eats enthusiastically can still have significant disease. If you want a deeper look at how this progresses, see [Dog Dental Disease: Signs, Stages, and What You Can Do](/knowledge/veterinary-medicine/preventive-and-routine-care/dog-dental-disease-signs-stages-and-what-you-can-do). ## Causes and Risk Factors for Unhealthy Dog Teeth Dental disease is driven by bacteria in plaque, but several factors change how fast it develops. **Age.** Periodontal disease risk climbs with age. Dogs 8 years and older are at highest risk, while dogs under 4 years are at lowest risk [4]. Gingivitis is often first noticed around 2 years of age, and periodontitis usually begins at 4 to 6 years of age [1]. **Breed and size.** Small-breed dogs usually have more problems with periodontitis than large-breed dogs [1]. Some breeds carry significantly higher risk, including American cocker spaniels [4]. **Diet texture.** Dogs on a regular diet of hard kibble develop fewer problems, likely because chewing hard food mechanically cleans the teeth [1]. **Chewing behavior and lifestyle.** Working dogs had about 3 times the risk of traumatic tooth injury and a 66% higher likelihood of tooth wear compared with non-working dogs [5]. That does not mean activity is bad. It means high-drive chewers and working dogs need closer monitoring for fractures and worn teeth. **Home care habits.** Owner-reported oral care habits are a key risk factor for periodontal disease [4]. In other words, what you do at home changes the odds. **Where disease shows up.** Back teeth are affected more often than front teeth. Upper teeth are affected more severely than lower teeth, and the cheek-facing surfaces have more disease than the tongue-facing surfaces [1]. That is why lifting the lip and looking at the back upper teeth matters so much. ## How Veterinarians Diagnose Dental Disease Diagnosis starts with a hands-on oral exam. Your veterinarian will check gum color, gum attachment, tartar coverage, tooth mobility, and broken or worn teeth. They will also look for pockets between the gum and tooth, which signal that the supporting tissue is pulling away. Because much of the disease sits below the gumline where you cannot see it, a full assessment usually happens under anesthesia. Dental radiographs (X-rays) show bone loss, root problems, and hidden infection. Probing under anesthesia gives accurate measurements of gum attachment. Your veterinarian may also ask about diet, chewing habits, and any history of trauma. Working dogs and dogs who chew hard objects may need extra attention for fractures and wear [5]. ## Treatment Options Treatment depends on the stage. **Gingivitis.** This stage is reversible [1]. A professional cleaning plus consistent home care can return the gums to health. **Periodontitis.** This stage is irreversible and causes permanent loss of tooth support [1]. Treatment focuses on controlling infection, removing tartar above and below the gumline, and preserving the teeth that can be saved. Some teeth may need extraction if the supporting bone is gone. **Fractured or worn teeth.** Tooth fracture and periodontal disease are the main reasons for tooth extraction in dogs [5]. A broken tooth with exposed pulp is painful and usually needs treatment or removal. **Professional cleaning.** The gold standard is annual dental prophylaxis under general anesthesia with imaging, followed by home care that includes daily brushing [6]. Anesthesia allows thorough cleaning below the gumline and safe X-rays. **Home products.** Daily dental chews can help between cleanings. In one study, 60 consecutive days of a daily honeycomb-shaped dental chew produced significant reductions in calculus (26.6%) and plaque, along with improvements in gingivitis and mouth odor [6]. **What does not work well.** A single session with an ultrasonic toothbrush had limited effect on removing existing calculus [7]. If your dog already has hard tartar, a toothbrush alone will not remove it. Never give human dental products or pain medications without veterinary guidance. Some are toxic to dogs. Your veterinarian will calculate any medication dose from your dog's weight and health status. ## Recovery, Outlook, and Long-Term Management Gingivitis improves with treatment [1]. That is the good news. Periodontitis does not reverse, but it can be managed. The goal after a cleaning is to slow down new plaque and tartar formation so you stay in a maintenance phase instead of constantly treating flare-ups [6]. Expect a lifelong routine: - Brush daily, or as close to daily as your dog tolerates - Use veterinary-approved dental chews or diets between cleanings - Recheck the mouth at home every week - Keep professional cleaning appointments, often yearly - Watch for new bad breath, bleeding, or chewing changes Small dogs and dogs over 8 years old need closer watching because their risk is higher [1][4]. Dogs who chew hard objects need monitoring for fractures and wear [5]. ## Prevention Prevention works best when it starts early and happens daily. **Brush the teeth.** Tooth brushing is a preventive method that helps keep teeth and gums healthy [1]. Daily brushing is the gold standard for home care [6]. Use a soft pet toothbrush and pet-safe toothpaste. **Choose the right chew.** Dental chews with published evidence can reduce calculus, plaque, gingivitis, and odor when used daily [6]. Match chew size to your dog and avoid objects hard enough to fracture teeth. **Feed for dental health.** Hard kibble provides a mechanical cleaning effect during chewing [1]. If you are comparing diets, see [Chewy Dog Food: Is It a Healthy Choice for Your Pup?](/knowledge/veterinary-medicine/nutrition/chewy-dog-food-vs-fresh-frozen). **Keep professional care on schedule.** Annual prophylaxis under anesthesia with imaging, plus home care, is the standard approach [6]. Skipping cleanings lets tartar build up and gives bacteria a place to stay [2]. **Start young.** Dogs under 4 years are at lowest risk for periodontal disease [4]. Building a brushing habit while your dog is young protects that advantage. For a step-by-step home plan, see [Prevent Dog Dental Disease](/knowledge/veterinary-medicine/dental-care/prevent-dog-dental-disease) and [Preventative Dental Care For Dogs](/knowledge/veterinary-medicine/dental-care/preventative-dental-care-for-dogs). ## Limitations and When to Contact a Veterinarian You cannot see below the gumline at home, and you cannot feel bone loss with your finger. A normal-looking tooth can still have infected tissue underneath. That is the main limit of any at-home check. Contact a veterinarian the same day if you notice: - A swollen face or jaw - A tooth that is loose or has fallen out - Bleeding from the mouth that does not stop - Sudden drooling with difficulty swallowing - Refusing to eat for more than 24 hours Go to an emergency clinic now if your dog has: - Trouble breathing - A swollen muzzle or neck that is getting worse quickly - Heavy bleeding - Collapse or severe weakness Book a routine dental exam if you see: - Bad breath that persists - Brown tartar along the gumline - Red or bleeding gums - Chewing on one side or dropping food - Any broken or worn teeth Individual cases need a veterinarian. Your dog's exam, X-rays, and history determine the right plan. ## Frequently Asked Questions ### How can I tell if my dog's teeth are healthy? Healthy teeth are white to slightly off-white with no thick crust at the gumline, and the gums are pink and firm. Gums should not bleed when you press them gently or brush. If you see tartar, redness, or bad breath, that is a sign to book an exam. ### What does unhealthy dog teeth and gums look like? Unhealthy teeth have yellow, brown, or gray buildup, especially on the back upper teeth. Gums look red, puffy, or receding, and they may bleed with light pressure. You may also see drooling, chewing on one side, or dropping food. ### Is dog dental disease reversible? Gingivitis is reversible with treatment, but periodontitis is not. Periodontitis causes permanent loss of the tissue and bone that support teeth. That is why catching problems at the gingivitis stage matters so much. ### Does bad breath always mean dental disease? Bad breath is a common sign of plaque, tartar, and gum inflammation, but it can have other causes too. A veterinary exam is the only way to know what is driving it. Do not assume it is harmless just because your dog seems fine otherwise. ### Can I remove my dog's tartar at home? No. Hard tartar bonds tightly to the tooth and needs professional scaling, usually under anesthesia with imaging. A single ultrasonic toothbrush session had limited effect on existing calculus. Daily brushing and dental chews help prevent new buildup between cleanings. ## Related Articles - [Dog Dental Disease: Signs, Stages, and What You Can Do](/knowledge/veterinary-medicine/preventive-and-routine-care/dog-dental-disease-signs-stages-and-what-you-can-do) - [Prevent Dog Dental Disease](/knowledge/veterinary-medicine/dental-care/prevent-dog-dental-disease) - [Preventative Dental Care For Dogs](/knowledge/veterinary-medicine/dental-care/preventative-dental-care-for-dogs) - [Dog Chewing Paws Gut Health](/knowledge/veterinary-medicine/behavior/dog-chewing-paws-gut-health) - [Chewy Dog Food: Is It a Healthy Choice for Your Pup?](/knowledge/veterinary-medicine/nutrition/chewy-dog-food-vs-fresh-frozen) - [Dog Bad Breath: When It's More Than Just a Dental Issue](/knowledge/veterinary-medicine/preventive-and-routine-care/dog-bad-breath-when-more-than-dental) ## References 1. [Dental Disorders of Dogs - Dog Owners](https://www.merckvetmanual.com/dog-owners/digestive-disorders-of-dogs/dental-disorders-of-dogs). Merck Veterinary Manual. 2. [Compositional Changes and Comparative Analysis of Oral Microbial Community During the Formation of Canine Dental Calculus](https://pubmed.ncbi.nlm.nih.gov/41302043/). Animals : an open access journal from MDPI, 2025. 3. [Canine Tooth Microbiome Gingival Index: a new microbiome-derived measure of gingival health validated by nutritional intervention](https://pubmed.ncbi.nlm.nih.gov/42328069/). Frontiers in veterinary science, 2026. 4. [Risk assessment of canine periodontal disease: insights from owner-reported health questionnaires](https://pubmed.ncbi.nlm.nih.gov/41856678/). The Journal of small animal practice, 2026. 5. [Traumatic dentoalveolar injury, tooth wear, and periodontal disease in working and non-working dogs (2018-2022)](https://pubmed.ncbi.nlm.nih.gov/42182901/). Frontiers in veterinary science, 2026. 6. [Effectiveness of a Daily Honeycomb-Shaped Dental Chew in Reducing Calculus, Plaque, Gingivitis and Malodor in Dogs](https://pubmed.ncbi.nlm.nih.gov/38819379/). Journal of veterinary dentistry, 2025. 7. [A pilot study on the novel use of an ultrasonic toothbrush in dogs: limited effect on dental calculus following a single treatment](https://pubmed.ncbi.nlm.nih.gov/41872912/). Acta veterinaria Scandinavica, 2026. ## Further Reading - [Merck Veterinary Manual: Dog Owners](https://www.merckvetmanual.com/dog-owners) - [Cornell Richard P. Riney Canine Health Center: Canine Health Information](https://www.vet.cornell.edu/departments-centers-and-institutes/riney-canine-health-center/canine-health-information) - [American Veterinary Medical Association: Pet Care](https://www.avma.org/resources-tools/pet-owners/petcare)