Yes, tartar is bad for your teeth and gums, and the damage goes further than most people realize. Tartar is hardened dental plaque, roughly 80% mineralized calcium and phosphorus by weight, that forms a crusty shell on your teeth you can’t brush off. Once it’s there, it creates a permanent rough surface where bacteria thrive, triggering a chain of inflammation that can destroy gum tissue, erode bone, and even affect your heart and blood vessels.
What Tartar Actually Is
Every mouth produces plaque, a sticky film of bacteria and fluid that coats your teeth throughout the day. When plaque isn’t removed, minerals from your saliva (primarily calcium and phosphorus) deposit into it and form crystals. This process can begin in as little as four to eight hours, though full mineralization typically takes 10 to 12 days. The result is tartar, also called calculus: a hard, cement-like deposit that bonds to tooth enamel far too tightly for a toothbrush or floss to remove.
The surface of tartar is always covered with a fresh layer of living plaque. Think of it as a permanent foundation that bacteria keep building on. That’s what makes it so damaging: tartar doesn’t just sit there. It continuously attracts and shelters the very bacteria causing problems in your mouth.
How Tartar Damages Your Gums and Teeth
Tartar above the gumline is the visible problem, showing up as yellow, brown, or black crusty deposits, usually along the inner surface of your lower front teeth or near the upper molars where saliva glands are located. But the real trouble starts when tartar spreads below the gumline.
Bacteria sheltered by tartar release toxins that inflame gum tissue. In the early stage (gingivitis), gums become red, swollen, and bleed easily when you brush. Left untreated, the inflammation deepens. The space between your gums and teeth widens into what dentists call a “pocket,” and bacteria colonize this pocket, making the inflammation worse. Over time, this process destroys the gum tissue and the bone that holds your teeth in place. That progression, from gingivitis to periodontitis, is the leading cause of tooth loss in adults.
Tartar also contributes to persistent bad breath. The bacteria trapped beneath and around tartar deposits produce sulfur compounds that brushing and mouthwash can’t reach.
The Connection to Heart Disease and Other Conditions
The consequences of tartar-driven gum disease extend well beyond your mouth. Periodontal disease creates a chronic state of low-grade inflammation throughout the body. People with gum disease have measurably higher levels of inflammatory markers in their blood, and oral bacteria can enter the bloodstream through inflamed gum tissue.
A scientific statement from the American Heart Association reviewed the growing body of evidence linking periodontal disease to cardiovascular problems. Multiple meta-analyses support an association between gum disease and heart attacks, stroke, and cardiovascular death. For people who have already had a stroke, the presence of periodontal disease increases the risk of having another one. The connection appears to involve both direct vascular infection by oral bacteria and the systemic inflammation that gum disease generates.
The links don’t stop at the heart. Periodontal disease has been associated with type 2 diabetes, high blood pressure, chronic kidney disease, heart failure, atrial fibrillation, and even cognitive decline and dementia. These are associations, not proof that tartar alone causes these conditions, but the relationship is strong enough that treating gum disease has been shown to improve blood sugar control in people with diabetes, lower blood pressure, and reduce inflammatory markers.
What Tartar Looks and Feels Like
If you run your tongue along the backs of your lower front teeth and feel a rough, hard ridge that wasn’t there before, that’s likely tartar. It feels like a hard shell or crust bonded to the tooth. Above the gumline, it ranges from pale yellow to dark brown or black, depending on how long it’s been there and what you eat and drink. Below the gumline, tartar tends to be darker because it absorbs pigments from blood in inflamed gum tissue.
Some people form tartar faster than others. The mineral content of your saliva, your diet, and how thoroughly you clean your teeth all play a role. Heavy tartar formers may notice visible buildup within weeks of a dental cleaning.
Why You Shouldn’t Try to Remove It Yourself
Dental scraper kits marketed for home use are tempting, but using them carries real risks. Without training, you can scratch your tooth enamel, which leads to increased sensitivity and creates new rough spots where plaque accumulates faster. You can also cut or traumatize gum tissue, causing recession that exposes sensitive tooth roots. Possibly worse, you can accidentally push tartar fragments beneath the gumline, leading to gum abscesses or deeper infection. Injuries to your cheeks, tongue, and other soft tissues are common too. The tools look simple, but the technique matters enormously.
Professional scaling is the only safe and effective way to remove tartar. During a cleaning, a dental hygienist uses specialized instruments (and often ultrasonic devices) to break tartar away from tooth surfaces both above and below the gumline. For mild to moderate gum disease, a deeper procedure called scaling and root planing smooths the root surfaces so gums can reattach more tightly, shrinking those bacterial pockets. This is the standard first-line treatment, and it can eliminate bad breath, halt bone loss, and reduce the risk of the disease progressing.
How to Prevent Tartar From Forming
Since tartar is just mineralized plaque, the goal is to remove plaque before it hardens. Brushing twice a day and flossing daily are the baseline, but the details matter. Plaque tends to collect in the spots most people skip: the inner surfaces of the lower front teeth, the gum margins of the upper back molars, and the tight spaces between teeth. Angling your brush toward the gumline and spending a full two minutes helps reach those areas.
Tartar-control toothpastes contain specific ingredients that slow plaque mineralization. Zinc salts (often zinc citrate) inhibit the crystal formation that turns plaque into tartar. Pyrophosphates work by directly blocking mineral deposition. A compound called sodium hexametaphosphate has shown anti-tartar benefits as high as 55% greater than regular toothpaste in clinical testing. Look for “tartar control” or “anti-calculus” on the label. These products won’t remove tartar that’s already formed, but they meaningfully slow new buildup between cleanings.
Regular professional cleanings, typically every six months, catch tartar before it causes significant damage. If you’re a heavy tartar former or already have early gum disease, your dentist may recommend cleanings every three to four months. The cost of prevention is far less than treating the bone loss and tooth loss that advanced tartar buildup can cause.