Periodontal disease, often called gum disease, is a common condition that affects the tissues around the teeth. It can start with mild gum inflammation and bleeding, but if it progresses, it can damage the bone and support structures that hold teeth in place.
Many people do not notice gum disease in the early stages. Gums may bleed a little when brushing or flossing, breath may feel less fresh, or the gums may look slightly swollen. Because early symptoms can be mild, gum disease can become more serious before a person realizes something is wrong.
The good news is that early gum disease is often preventable and treatable with daily oral hygiene and professional dental care. More advanced periodontal disease usually needs ongoing treatment to slow progression, protect the gums and bone, and reduce the risk of tooth loss.
What Is Periodontal Disease?
Periodontal disease refers to inflammation or infection of the tissues that surround and support the teeth. These tissues include the gums, ligaments, and bone around the tooth roots.
The earliest stage is usually gingivitis. Gingivitis means the gums are inflamed, often because plaque has built up along the gumline. At this stage, the gums may be red, swollen, tender, or bleed easily. Gingivitis can often be improved with better brushing, flossing, and professional cleaning.
Periodontitis is a more advanced form of gum disease. It can involve gum recession, deeper spaces between the teeth and gums, bone loss, loose teeth, and changes in how the teeth fit together. The CDC describes periodontitis as involving bone loss around teeth and notes that it is an irreversible condition that can be slowed down and managed with professional treatment.
Gingivitis vs. Periodontitis
Gingivitis and periodontitis are related, but they are not the same thing.
Gingivitis affects the gums. It is usually caused by plaque buildup and may cause redness, swelling, tenderness, and bleeding. Because the deeper support structures are not yet permanently damaged, gingivitis can often be reversed with consistent oral hygiene and dental cleanings.
Periodontitis affects the deeper structures that support the teeth. When plaque and tartar spread below the gumline, the gums can pull away from the teeth and form deeper pockets. Bacteria and inflammation in these pockets can damage gum tissue and bone. This can lead to receding gums, loose teeth, painful chewing, and tooth loss if not managed.
Common Signs of Periodontal Disease
Gum disease does not always cause pain at first. This is one reason regular dental checkups matter, even if your mouth feels normal.
Possible signs include red, swollen, puffy, or tender gums; gums that bleed when brushing or flossing; bad breath that does not go away; gum recession; teeth that look longer than before; sensitive teeth; painful chewing; pus between the teeth and gums; loose teeth; new spaces between teeth; or a change in how your bite feels.
The CDC lists warning signs such as red or tender gums, bleeding gums, gums that have moved away from the teeth, loose or sensitive teeth, painful chewing, and changes in how teeth or partial dentures fit. Mayo Clinic also notes symptoms such as persistent bad breath, pus between the teeth and gums, tooth loss, and new spaces between teeth.
Why Bleeding Gums Should Not Be Ignored
Bleeding gums are common, but they are not something to dismiss. Gums may bleed because plaque has irritated the gumline, because brushing or flossing technique is too aggressive, because of hormonal changes, or because of certain medications or health conditions.
If bleeding happens once after starting flossing again, it may improve with gentle, consistent care. But bleeding that continues, happens often, or appears with swelling, tenderness, bad breath, or gum recession should be checked by a dentist.
Bleeding is often one of the earliest signs that the gums are inflamed. Treating inflammation early is easier than waiting until periodontal pockets, bone loss, or loose teeth develop.
What Causes Periodontal Disease?
The main cause of periodontal disease is plaque buildup. Plaque is a sticky film that forms on the teeth and contains bacteria. When plaque is not removed regularly by brushing and cleaning between the teeth, it can irritate the gums.
Over time, plaque can harden into tartar, also called calculus. Tartar cannot be removed with regular brushing or flossing at home. It needs to be removed by a dental professional. The National Institute of Dental and Craniofacial Research explains that plaque left on the teeth can harden into tartar and that only professional cleaning can remove tartar.
When tartar and bacteria remain near or below the gumline, the gums can pull away from the teeth. These spaces, called periodontal pockets, can trap more bacteria. As inflammation continues, the tissues and bone that support the teeth may be damaged.
Risk Factors That Make Gum Disease More Likely
Anyone can develop gum disease, but some factors increase risk. These include poor oral hygiene, smoking or tobacco use, diabetes, dry mouth, certain medications, genetics, stress, hormonal changes, poor nutrition, obesity, crooked teeth, clenching or grinding, and some immune-related or systemic health conditions.
Smoking is one of the most important risk factors. NIDCR notes that smoking is the most significant risk factor for gum disease and can also make treatment less successful. The CDC also lists smoking, diabetes, poor oral hygiene, medication side effects, stress, genetics, bruxism, hormonal changes, poor nutrition, and obesity among factors associated with gum disease.
Diabetes is especially important because high blood sugar can affect the body’s ability to fight infection and heal. Gum inflammation can also make diabetes management harder for some people, which is why regular dental care is important for people with diabetes.
How Periodontal Disease Is Diagnosed
A dentist or dental hygienist can check for periodontal disease during a dental exam. They may look for plaque, tartar, bleeding, gum recession, loose teeth, bite changes, and signs of inflammation.
One common part of the exam is measuring the spaces between the teeth and gums. These measurements are sometimes called pocket depths. Deeper pockets may suggest gum disease, especially if they bleed or appear with bone loss.
Dental X-rays may also be used to check whether bone around the teeth has been lost. The diagnosis is based on the full picture, not just one symptom.
How Periodontal Disease Is Treated
Treatment depends on how advanced the gum disease is. For gingivitis, treatment may include professional cleaning, improved brushing and flossing, and follow-up visits to make sure inflammation improves.
For periodontitis, treatment may include scaling and root planing, sometimes called deep cleaning. This removes plaque and tartar from above and below the gumline and smooths root surfaces so the gums can heal more effectively.
Some people may need prescription mouth rinses, medication placed under the gums, more frequent cleanings, or referral to a periodontist, a dentist who specializes in gum disease. In more advanced cases, surgical treatment may be needed. The CDC lists scaling and root planing, prescribed medication, and surgical procedures as possible treatments for periodontitis.
Home Care That Supports Healthy Gums
Daily home care is one of the most important parts of preventing and managing gum disease. Brushing twice a day helps remove plaque from tooth surfaces. Cleaning between the teeth once a day helps remove plaque where a toothbrush cannot reach.
Floss, interdental brushes, water flossers, and other cleaning tools may help, depending on your teeth, gums, dexterity, dental work, and dentist’s recommendations. A sonic or electric toothbrush may also help some people brush more consistently and effectively.
Home care works best when paired with professional dental cleanings. Tartar buildup cannot be removed at home, and gum disease can progress without obvious pain.
Common Mistake: Brushing Harder Instead of Better
When people see bleeding or plaque, they may brush harder. But aggressive brushing can irritate the gums, contribute to gum recession, and wear down enamel.
Better brushing usually means using a soft-bristled toothbrush, gentle pressure, and enough time to clean along the gumline. If you use an electric toothbrush, let the brush do the work instead of scrubbing forcefully.
If your gums bleed even with gentle brushing and cleaning between teeth, schedule a dental exam rather than simply brushing harder.
Common Mistake: Stopping Flossing Because Gums Bleed
Another common mistake is stopping flossing when the gums bleed. If bleeding is due to inflammation from plaque, stopping interdental cleaning may allow plaque to build up even more.
Gentle, consistent cleaning between the teeth may help bleeding improve over time when gingivitis is the cause. However, bleeding that does not improve, feels painful, or occurs with swelling, bad breath, or loose teeth should be evaluated.
A dentist or hygienist can show you which interdental tool is safest and most effective for your mouth.
Common Mistake: Waiting Until Teeth Feel Loose
Loose teeth can be a sign of advanced periodontal disease. Waiting until teeth shift or feel loose may mean the gums and bone have already been damaged.
Earlier signs, such as bleeding, swollen gums, persistent bad breath, gum recession, or sensitivity, are worth checking before the disease becomes more difficult to manage.
Regular dental checkups can catch gum problems before they are obvious at home. The CDC notes that gum disease can become serious before symptoms are noticed and that yearly dental checkups can help detect and prevent it.
When to See a Dentist
Schedule a dental visit if your gums bleed regularly, look red or swollen, feel tender, or seem to be pulling away from your teeth. You should also see a dentist for persistent bad breath, painful chewing, tooth sensitivity, loose teeth, new spaces between teeth, pus near the gums, or a change in how your bite feels.
If you have diabetes, smoke or use tobacco, are pregnant, have dry mouth, take medications that affect saliva or gums, or have a history of gum disease, ask your dentist how often you should be seen. Some people need cleanings and gum checks more often than once a year.
Do not wait for pain. Periodontal disease may progress quietly, and earlier treatment can help protect gum tissue, bone, and teeth.
When to Seek Urgent Dental Care
Seek urgent dental care if you have facial swelling, severe gum pain, pus, fever, a rapidly worsening dental infection, a loose adult tooth after injury, or swelling that makes it hard to swallow, breathe, or open your mouth.
These symptoms may suggest an infection or dental emergency that needs prompt treatment. If swelling affects breathing or swallowing, seek emergency medical care right away.
The Bottom Line
Periodontal disease is inflammation or infection of the gums and supporting structures around the teeth. It often begins with gingivitis, which can cause swollen, tender, or bleeding gums. If it progresses to periodontitis, it can damage gum tissue and bone and may lead to loose teeth or tooth loss.
The main cause is plaque buildup that can harden into tartar. Risk factors include smoking, diabetes, poor oral hygiene, dry mouth, certain medications, genetics, stress, hormonal changes, nutrition, and teeth grinding.
The best approach is early action: brush gently twice a day, clean between the teeth daily, get professional cleanings, and see a dentist if bleeding, swelling, gum recession, bad breath, pain, or loose teeth appear.
If you are unsure whether your gum symptoms are normal, ask a dentist or dental hygienist for an exam and personalized home-care plan.