Guides / Hygiene

Periodontal Disease

The difference between gingivitis and periodontitis, how treatment works step by step, and how to keep it stable for life.

The short answer

What Is Periodontal Disease, and How Is It Treated?

Periodontal disease, or periodontitis, is advanced gum disease. Inflammation caused by plaque bacteria spreads from the gums into the fibres and bone that hold the teeth, forming pockets and slowly destroying the support. It can't be reversed, but it can be stopped. Treatment is deep cleaning below the gum line under local anaesthetic, carried out in stages, followed by re-assessment and regular maintenance visits. At St Vincent Smile in Finnieston, Glasgow, periodontal therapy is £100 per stage, usually four stages, and Plan B covers the four hygiene visits a year most people need afterwards.

£100per stage of therapy2
Usually 4stages, one for each area of the mouth
Controllednot cured, with good care
Plan B4 hygiene visits a year

Gingivitis or Periodontitis?

FeatureGingivitisPeriodontitis
What's affectedThe gums onlyGums, bone and supporting fibres
SignsBleeding, red or swollen gumsBleeding, receding gums, bad breath, loose teeth
PocketsShallowDeep, where the gum has detached from the tooth
Reversible?Yes, with better cleaningDamage can't be reversed, but it can be stopped

Every case of periodontitis started as gingivitis, but not every case of gingivitis becomes periodontitis. The difference is whether the inflammation has reached the bone. Our guide to gum disease covers the early signs and causes; this one is about what happens once the bone is involved, and what we do about it.

Below the Gum Line

Healthy gum is attached to the tooth just below the visible edge, with a shallow groove around it. When plaque sits in that groove for long enough, the body's response to the bacteria, as much as the bacteria themselves, starts to break down the attachment. The gum peels away to form a pocket, plaque and tartar spread down into it where no brush can reach, and the bone beneath is slowly lost. Deeper pockets shelter more bacteria, so the process feeds itself. Because there's little pain, it can go on for years unnoticed, until teeth loosen or drift and gaps appear between them. By then a lot of support has gone, which is why we check pockets at every visit rather than waiting for symptoms.

Worried About Your Gums?

Book an examination and a gum assessment.

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Who Is Most at Risk?

  • Smokers. Smoking is the single biggest risk factor. It reduces blood flow to the gums, which hides bleeding, slows healing and makes treatment less effective
  • People with diabetes, especially when blood sugar isn't well controlled. Gum disease in turn makes diabetes harder to control
  • People with a family history of gum disease or early tooth loss
  • Anyone who struggles to clean between their teeth, including around crowded teeth, bridges and braces
  • People under long-term stress, or with conditions and medicines that affect the immune system

None of these means you'll definitely get periodontitis, and having none of them doesn't rule it out. Regular gum checks are the only way to know.

How Is It Diagnosed?

We measure the depth of the pocket around each tooth with a fine probe, note where the gums bleed, and check whether any teeth are loose. X-rays show how much bone remains around each root. From that we stage and grade the disease using the British Society of Periodontology system. The stage, 1 to 4, describes how much support has been lost, from early to severe. The grade, A to C, describes how fast it's progressing for your age, and whether smoking or diabetes is likely to be driving it. Together they tell us how intensive treatment needs to be and how often you'll need maintenance afterwards. We explain your stage and grade to you, and record them so we can see at each re-assessment whether things are stable.

How Is It Treated?

  • Step 1: cleaning advice tailored to your mouth, removing plaque and tartar above the gum line, and controlling risk factors such as smoking and diabetes. Without this, deeper treatment doesn't hold
  • Step 2: deep cleaning below the gum line, usually in four stages, one for each quarter of the mouth, under local anaesthetic. Fine instruments remove the tartar and bacteria from the root surfaces inside each pocket, so the gum can heal back against the tooth. £100 per stage, or £90 for dental plan members2
  • Re-assessment a few months later, re-measuring every pocket to see where the gums have healed
  • Step 3: for any pockets that haven't responded, repeating the deep cleaning in that area. In some advanced cases we refer you to a periodontist, a dentist who has trained further in gum treatment, for gum surgery
  • Maintenance: regular hygiene visits, often every three months, to keep it stable

What to Expect After Each Stage

The area is numb during treatment, so you feel pressure and scraping rather than pain. Afterwards, your gums may be tender for a day or two and ordinary painkillers are enough. As the swelling goes down over the following weeks, the gums tighten and often shrink back slightly, so teeth can look a little longer and small gaps may appear between them near the gum. That's healing, not damage, though exposed root surfaces can be sensitive to cold for a while; a sensitive toothpaste helps. Keep cleaning the treated area gently from the first day, as that's what keeps the pockets from refilling with plaque.

Can It Be Cured?

Periodontitis can't be cured, because the bone and attachment that have been lost don't grow back. But it can be stabilised and kept under control for life, with treatment, good home care and regular maintenance, and most people keep their teeth for many years as a result. The most common reason it comes back is missed maintenance visits. Some advanced cases, or cases that don't respond to deep cleaning, are referred to a periodontist elsewhere for further treatment, such as gum surgery. We'll tell you honestly at your re-assessment if that's the right route for you.

Keeping It Stable for Life

Maintenance is where periodontal treatment succeeds or fails. Every three months, your dental therapist checks the pockets, removes any new deposits below the gum line and polishes with Airflow, so the bacteria never get re-established. Between visits, brush twice a day angled into the gum line and clean between your teeth every day with the interdental brush sizes we've shown you. If you smoke, stopping is the single most useful thing you can do for your gums. Plan B, at £40.16 a month, includes four hygiene visits a year with Airflow and two examinations, so the visits that keep your gums stable are already paid for.

Questions

Will my teeth tighten up afterwards?Often, yes. As the inflammation settles, the gum heals back against the tooth and teeth that were slightly loose become firmer. Bone that has already been lost doesn't grow back, so a tooth that's very loose may not fully recover.
What's the difference between a hygiene visit and periodontal therapy?A hygiene visit cleans above and just below the gum line and takes 30 minutes. Periodontal therapy cleans deep inside the pockets, under local anaesthetic, one area of the mouth at a time, and is followed by re-assessment. Hygiene visits then maintain the result.
Is periodontitis hereditary?Partly. A family history of gum disease or early tooth loss raises your risk, but plaque is still the cause, and smoking and diabetes matter more. If your parents lost teeth to gum disease, tell us and we'll check your gums more closely.
Can periodontitis come back?Yes, if plaque is allowed to build up in the pockets again. That's why maintenance visits every three months and daily cleaning between your teeth matter so much. At each visit we re-measure your gums, so any change is caught early.
Will I lose my teeth?Not necessarily. Caught and treated in time, most teeth can be kept for many years. Teeth that have lost most of their bone support may eventually need to come out, and we'll talk through the options for replacing them honestly.

This guide is general information, not a diagnosis. A dentist needs to examine you to say what is right for your teeth.

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