More adult teeth are lost to gum disease than to decay, and almost nobody who has it knows. It progresses without pain, without obvious symptoms, and often without anything the patient would think to mention.
The measuring is therefore the whole thing.
What the numbers at your cleaning mean
When a hygienist calls out a series of numbers around each tooth, those are pocket depths in millimeters: the space between the gum and the point where it attaches to the tooth root.
One to three millimeters is healthy and cleanable at home. Four begins to be problematic, because a toothbrush and floss cannot reach the bottom. Five and above means the attachment has been lost and the bone underneath is receding.
Bleeding when probed is recorded separately and is a sign of active inflammation. Gums that bleed when you brush are not normal, however common that belief is.
The two stages
Gingivitis is inflammation of the gum tissue only. It is reversible, and it responds to professional cleaning and better home care within weeks.
Periodontitis means the inflammation has reached the bone and the bone is being lost. That loss is not reversible. Treatment stops or slows the progression and can regain a small amount of attachment, but the aim is stabilization rather than restoration.
The transition between the two is silent, which is why the charting matters so much. It catches the crossing.
What treatment involves
The first line is scaling and root planing: cleaning the root surfaces below the gumline, usually with local anesthetic, often across two or more appointments by section. The aim is to remove the bacterial deposits the pockets are harboring so the tissue can reattach.
Reassessment follows, typically six to eight weeks later, with re-charting to see which sites responded.
Sites that remain deep may need surgical treatment: procedures that allow direct access to clean root surfaces and, in some cases, regenerative techniques using grafting material to rebuild lost bone in specific defect shapes.
Ongoing maintenance is then permanent, usually at three- or four-month intervals rather than six, because the bacteria below the gumline re-establish on roughly that cycle.
The maintenance interval is not an upsell
This is the most common point of friction. Patients with treated periodontal disease are told they need cleanings four times a year rather than twice, and it can sound like a sales tactic.
It is not. The recolonization timeline is well established, and stretching intervals is how stable disease becomes progressive again. Ask to see your charting numbers and ask which sites justify it. A good practice will show you.
What makes it worse
Smoking is the largest modifiable risk factor and it also masks the signs, because it reduces bleeding. Smokers often present with more advanced disease and less obvious symptoms.
Uncontrolled diabetes and gum disease worsen each other in both directions. Certain medications cause gum overgrowth that traps bacteria. Grinding does not cause periodontal disease but accelerates bone loss where it is already present.
Genetics matter too. Some patients maintain excellent hygiene and still lose attachment, and some do very little and keep everything. That is unfair and it is real, and it means diligent patients with a family history need closer monitoring rather than reassurance.
When a specialist is warranted
Periodontists complete three additional years of training after dental school focused on this and on implant surgery.
Referral makes sense for advanced or rapidly progressing disease, for sites that do not respond to initial therapy, for cases where regenerative surgery or grafting is being considered, and for gum recession requiring tissue grafting.
Plenty of periodontal treatment is handled well in general practice. What you want is a dentist who measures consistently and refers when the numbers stop improving, rather than repeating the same non-surgical treatment indefinitely.
What you can do
Cleaning between the teeth daily is where periodontal outcomes are actually decided, because a toothbrush does not reach the surfaces where this starts. Floss works, interdental brushes often work better for adults with larger spaces, and water flossers help people who will not do either.
Brushing twice daily for two minutes with soft bristles angled toward the gumline. Not harder, which causes recession, but more thoroughly at the margin.
And keeping the maintenance interval you were given.
Recession is a related but separate problem
Gums can recede without deep pockets, and the causes are usually mechanical rather than bacterial: brushing too hard, brushing side to side rather than at the gumline, thin tissue inherited rather than acquired, or teeth positioned outside the arch.
Exposed root surfaces are sensitive to cold and considerably more prone to decay than enamel, because root surfaces are softer.
Mild recession is monitored and managed by correcting technique and using a soft brush. Progressive recession, or recession approaching the point where there is little attached tissue left, is where gum grafting is considered, and that is specialist work.
The measure that matters is whether it is changing. Photographs and measurements at recall visits answer that; memory does not.
Getting assessed properly
If it has been years since anyone charted your pockets, that is the place to start regardless of how your gums feel.
A dental practice who charts at every recall, shows you the numbers, and tracks them over time is doing the thing that determines whether you keep your teeth. The disease is manageable when it is found early and difficult when it is not, and the only difference between those two situations is measurement.
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