Gum Disease Stages and Treatment: A Complete Guide

The stages

Dentists now describe gum disease using the 2017 World Workshop classification: gingivitis, then four stages of periodontitis graded by how much attachment and bone around the teeth has been lost. The descriptions below are simplified from that framework.

Healthy gums

Pink, firm gums. No bleeding on brushing or flossing.

Gingivitis

Gums bleed on brushing, flossing, or eating apples. Slight redness or puffiness, but no loss of attachment or bone. Fully reversible with professional cleaning and consistent home care, often within a couple of weeks. If your gums are puffy or tender, see swollen gums: when to worry.

Stage I — Initial periodontitis

Around 1–2 mm of attachment loss, pockets up to about 4 mm, and bone loss limited to the upper part of the root. Treatment stops further loss, but lost attachment does not return by itself.

Stage II — Moderate periodontitis

Around 3–4 mm of attachment loss and pockets up to about 5 mm, with more bone loss along the upper part of the root.

Stage III — Severe periodontitis

5 mm or more of attachment loss, pockets of 6 mm or more, and bone loss reaching the middle of the root or beyond. Some teeth may loosen, and a few may already have been lost to the disease.

Stage IV — Advanced periodontitis

Everything in stage III, plus loose or drifting teeth, a collapsing bite or several teeth already lost, so the mouth needs complex rehabilitation. Further tooth loss is likely without intervention.

Treatment by stage

Gingivitis

• Professional scale and polish (about 45 minutes)
• Home care: brushing + daily cleaning between teeth + a soft or electric brush
• Recheck after a few weeks
• Professional cleaning: AED 400–800

Stages I–II

• Deep cleaning (scaling and root planing) — 1–2 visits (explained in deep cleaning: scaling and root planing)
• Local antimicrobials placed into pockets if needed
• 3-month recheck
• Deep cleaning (full mouth): AED 1,500–3,000

Stage III

• Deep cleaning, then surgical access to deeper pockets that don't respond
• Regenerative procedures such as bone grafting in suitable defects
• Maintenance visits about every 3 months for the long term

Stage IV

• Stage III treatment, plus extraction of teeth that cannot be kept, splinting of loose teeth and bite rehabilitation
• Replacement of lost teeth (implants, bridges or dentures) once the disease is stable
• Lifelong 3-month maintenance

Surgical and regenerative treatment for stage III and IV disease is often carried out by a periodontist on referral. Its cost depends on how many sites need treatment, so there is no single figure; see pricing for the cleaning fees above.

Long-term periodontitis maintenance

Once periodontitis has caused bone loss, that bone does not grow back — so the goal of treatment shifts from cure to stabilisation. The measure of success is preventing further loss. In practice this means a professional maintenance visit roughly every three months rather than every six, because pockets refill with bacteria within weeks. Home care becomes critical: cleaning between teeth daily, using interdental brushes sized to the gaps, and a soft brush along the gumline. Older patients with dry mouth or dexterity limits may need adapted tools and a shorter recall. Periodontitis can be controlled for decades this way; it is lapsing from maintenance that lets it advance.

The modifiable risk factors

• Smoking — one of the strongest risk factors: the CDC notes that smokers have twice the risk of gum disease of non-smokers, and smoking also masks bleeding, so disease goes unnoticed (see smoking and oral health)
• Uncontrolled diabetes — a well-established risk factor, and the relationship runs both ways
• Poor plaque control — obvious but dominant
• Stress — well-documented effect on immune response
• Certain medications — phenytoin, cyclosporine, calcium channel blockers can cause gum overgrowth

Non-modifiable factors

• Genetic susceptibility — runs in families
• Age — gum disease becomes more common with age
• Hormonal changes — pregnancy, menopause
• Systemic diseases — some increase gum-disease severity

What you can do at home

1. A soft brush used gently along the gumline twice a day; an electric brush with a pressure sensor makes this easier for many people (see electric vs manual toothbrush)
2. Clean between the teeth daily with floss, interdental brushes or a water flosser — bleeding should decrease week-over-week (compare options in interdental brushes vs floss)
3. Fluoride mouth rinse — bonus benefit for enamel
4. Chlorhexidine rinse if prescribed, short-term only (staining issue)
5. Don't smoke

The connection to overall health

Active periodontitis is associated with:

• Cardiovascular disease
• Poorer blood-sugar control in diabetes
• Adverse pregnancy outcomes
• Some other conditions, including certain cancers and dementia, where research is at an early stage

An association is not proof that gum disease causes these conditions. The clearest evidence of a benefit from treatment is in diabetes, where periodontal treatment has been shown to modestly improve blood-sugar control; for other conditions research continues. More in the oral–systemic connection.

Common questions

Can periodontitis be cured?

It can't be fully reversed, but it can be controlled. Bone lost to periodontitis doesn't grow back on its own, so the aim of treatment is to stop the disease progressing. A deep cleaning (scaling and root planing) stabilises the gums, and maintenance cleanings, often every three months, help prevent further damage. This maintenance is lifelong. The earlier stage, gingivitis, is different: it involves no bone loss and can be fully reversed with good daily cleaning and professional care.

Why do my gums bleed when I floss?

The most common cause is gingivitis, gum inflammation caused by plaque build-up. Inflamed gums bleed easily when disturbed, which is why flossing can seem to cause bleeding at first. With consistent daily flossing, bleeding usually decreases within about two weeks. If it continues beyond three weeks of good cleaning, or comes with swelling or bad breath, see a dentist to check for gum disease.

Why does my adult tooth feel loose?

In adults a loose tooth is never normal. Common causes are trauma, which can loosen a tooth even without visible damage; advanced gum disease, where bone loss around the root removes the tooth's support; heavy grinding; and a fracture of the root. Because the cause determines whether the tooth can be saved, and early splinting or periodontal treatment can make the difference, a loose tooth should be evaluated promptly.

Practical decision guide

General dental decisions should preserve healthy tooth structure whenever possible. A good plan moves from diagnosis to the least-invasive durable treatment, then to prevention so the same problem does not repeat.

Check this first

• X-rays, pulp vitality, crack lines, gum pocketing, bite contacts, and how much natural tooth remains.
• Whether the problem is active disease, old restoration failure, trauma, wear, or a cosmetic concern.
• Whether a filling, onlay, crown, root canal, extraction, or monitoring is the right next step.

When to book sooner

• Pain wakes you at night, lingers after hot or cold, hurts on biting, or comes with swelling.
• A crown or filling falls out, a tooth cracks, or a sharp edge is cutting the tongue or cheek.
• You notice pus, fever, spreading swelling, or difficulty opening, swallowing, or breathing.

Questions to ask at the appointment

• What is the diagnosis, and what evidence supports it on the x-ray or clinical exam?
• What is the smallest treatment that solves the problem predictably?
• What failure signs should I watch for after treatment?

Dubai patient note

If insurance is involved, ask whether pre-approval is required, what codes will be submitted, and what alternatives are clinically acceptable if coverage is limited.

References

• American Academy of Periodontology
• Journal of Clinical Periodontology — Stage-based treatment guidelines
• World Workshop on the Classification of Periodontal and Peri-Implant Diseases 2017
• CDC — Smoking, gum disease and tooth loss