What Is Gum Disease and Why Self-Checks Matter
Gum disease is a bacterial infection of the tissues that support your teeth. It begins when plaque, a sticky film of bacteria, builds up along and below the gum line. In its early stage, called gingivitis, gum disease causes inflammation but no permanent damage. If left untreated, it can progress to periodontitis, which destroys the bone and connective tissue that hold your teeth in place.
The challenge with gum disease is that it often causes no pain in its early stages. Many people do not realize they have it until significant damage has occurred. A regular self-check helps you catch warning signs early, when the condition is still reversible. This is not a substitute for professional diagnosis, but it can tell you whether it is time to see a dentist or periodontist.
Gum Disease Self-Test: The Warning Signs
Check for each of the following signs. You can do this at home with a mirror and good lighting. Be honest with yourself about what you see and feel.
Bleeding When You Brush or Floss
Healthy gums do not bleed during normal brushing or flossing. If you see pink in the sink after brushing, or blood on your floss, your gums are inflamed. This is the most common early sign of gingivitis. Some people assume bleeding is caused by brushing too hard, but even aggressive brushing rarely causes bleeding in healthy gum tissue.
Red, Swollen, or Puffy Gums
Healthy gums are firm and pale pink. Pull your lip back and look at the gum tissue around your front teeth. If the gums appear dark red, puffy, or swollen, especially along the gum line where the tissue meets the tooth, this indicates inflammation. Swollen gums may also feel tender when you press on them.
Persistent Bad Breath or Bad Taste
Chronic bad breath (halitosis) that does not go away after brushing, flossing, and using mouthwash can be a sign of gum disease. The bacteria that cause periodontitis produce sulfur compounds with a strong odor. A persistent metallic or bad taste in your mouth, especially in the morning, is another related sign.
Receding Gums or Teeth That Look Longer
Look at your front teeth in the mirror. If your teeth appear longer than they used to, or if you can see the yellowish root surface below the enamel line, your gums may be receding. Gum recession exposes the tooth root and creates deeper pockets where bacteria can accumulate. Recession can be caused by gum disease, aggressive brushing, or both.
Loose or Shifting Teeth
Gently press on each of your teeth with a finger. Adult teeth should not wiggle or shift. If you notice any movement, or if your bite has changed (your teeth fit together differently when you close), this is a sign that the bone supporting the tooth has been damaged. Loose teeth typically indicate advanced periodontitis and require prompt professional evaluation.
Pus Between Teeth or Sensitivity Along the Gum Line
Pus (a whitish or yellowish discharge) between the teeth and gums is a clear sign of infection. Sensitivity to hot or cold along the gum line, separate from cavity-related sensitivity, can indicate that gum recession has exposed root surfaces. Both of these signs warrant a dental visit.
What Your Self-Test Results Mean
The number and severity of symptoms you observe give a rough sense of where you may fall on the gum disease spectrum. This is not a diagnosis, but a guide for your next steps.
No Signs Observed
If none of the warning signs above apply to you, your gums are likely healthy. Continue brushing twice daily, flossing once daily, and seeing your dentist for regular cleanings every 6 months. Keep doing periodic self-checks, as gum disease can develop gradually.
One or Two Mild Signs (Bleeding, Slight Redness)
This pattern is consistent with early gingivitis. The good news is that gingivitis is fully reversible. Improve your brushing and flossing routine, and schedule a dental cleaning. Your dentist can confirm whether gingivitis is present and remove the plaque and tartar that are causing the inflammation.
Three or More Signs, or Any Severe Signs
If you have multiple symptoms, or if you notice loose teeth, pus, significant recession, or persistent bad breath, schedule an appointment within the next 2 weeks. You may need to see a periodontist for a thorough evaluation. These signs can indicate periodontitis, which requires treatment beyond a standard cleaning.
How a Dentist or Periodontist Diagnoses Gum Disease
A self-test helps you spot warning signs, but only a dental professional can confirm gum disease and measure its severity. Professional diagnosis involves specific tools and measurements that are not possible at home.
Periodontal Probing
The dentist or periodontist uses a thin instrument called a periodontal probe to measure the depth of the pocket between each tooth and the gum tissue. Healthy pockets measure 1 to 3 millimeters. Pockets of 4 millimeters or deeper indicate gum disease. Pockets of 5 to 7 millimeters or more suggest moderate to severe periodontitis. The probing measurement is recorded for every tooth to create a map of your periodontal health.
X-Rays and Imaging
Full-mouth X-rays show the level of bone around each tooth. Gum disease gradually destroys the bone that supports the teeth, and X-rays reveal how much bone has been lost. In some cases, a dentist may use a 3D CBCT scan for a more detailed view of bone loss patterns.
Bacterial and Genetic Testing
Some periodontists use bacterial DNA testing to identify the specific types of bacteria present in the periodontal pockets. This information can guide antibiotic selection and treatment planning. Genetic testing for susceptibility to gum disease is also available, though it is not yet a routine part of every evaluation.
When to See a Dentist vs. a Periodontist
Your general dentist can diagnose and treat gingivitis and early gum disease. They perform routine cleanings and can identify problems during regular exams. For many patients, improved home care and regular professional cleanings are enough to reverse early gum disease.
See a periodontist if your gum disease has progressed beyond the early stage. A periodontist is a dental specialist who has completed 3 additional years of residency training focused on the gums, bone, and supporting structures of the teeth. You can learn more about what periodontists treat on our [periodontics specialty page](/specialties/periodontics).
Signs You Should See a Periodontist
- Pocket depths of 4 millimeters or greater found during a dental exam
- Bone loss visible on X-rays
- Gum recession that is worsening over time
- Teeth that are loose or shifting
- Gum disease that has not responded to standard cleanings
- Pus or recurring infection at the gum line
- You have diabetes, smoke, or have a family history of severe gum disease
Find a Periodontist Near You
Every periodontist on My Specialty Dentist has verified specialty credentials. Search by location to find periodontists in your area, compare their experience, and schedule a consultation for a thorough gum disease evaluation.
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