How a Specialist Gum Dentist Diagnoses and Treats Periodontal Disease
A specialist gum dentist, known as a periodontist, diagnoses periodontal disease through clinical pocket-depth measurements, dental X-rays, and bleeding assessments, then treats it using a staged approach that ranges from deep cleaning to surgical intervention depending on severity. Without professional diagnosis and treatment, periodontal disease progresses silently and is the leading cause of tooth loss in adults in the UK.
Key Takeaways
- Periodontal disease affects approximately 45% of UK adults in some form, ranging from mild gingivitis to advanced periodontitis.
- Diagnosis relies on a periodontal chart recording pocket depths at six sites per tooth — depths above 4mm indicate disease activity.
- First-line treatment is root surface debridement (RSD), typically completed across 2–4 appointments within a 6–8 week window.
- Surgical treatment, such as flap surgery or bone grafting, is reserved for pockets that remain 6mm or deeper after non-surgical therapy.
- At Islington Smiles, the majority of patients presenting with moderate periodontitis show measurable pocket-depth reduction of 1–2mm following a full course of root surface debridement.
Periodontal disease is a bacterial infection of the structures that support the teeth — the gums, periodontal ligament, and underlying bone. It begins as gingivitis, a reversible inflammation of the gum tissue, and progresses to periodontitis when the infection destroys the bone holding teeth in place. The critical distinction is that bone loss is irreversible; treatment arrests the disease but cannot regrow lost bone without surgical grafting.
How Does a Specialist Gum Dentist Diagnose Periodontal Disease?
A periodontist measures the sulcus — the crevice between tooth and gum — using a calibrated probe. Healthy sulci measure 1–3mm. Readings of 4mm suggest early disease; readings of 6mm or above indicate significant bone loss and active infection. Six measurements per tooth across a full mouth yields a map of disease severity that guides treatment planning.
Dental X-Rays
Bone levels are not visible clinically. Periapical and bitewing X-rays reveal the height of the alveolar bone relative to the tooth root, identifying areas where bone has receded. A periodontist compares current X-rays against any historical records to determine how rapidly the disease has progressed.
Bleeding on Probing and Mobility Scores
Healthy gum tissue does not bleed when probed gently. A bleeding score above 20% across the mouth is a reliable indicator of active inflammation. Tooth mobility is graded on a scale of 0–3; grade 2 or 3 mobility signals advanced bone loss and changes the prognosis for retaining individual teeth.
What Are the Treatment Stages for Periodontal Disease?
Treatment follows a structured sequence. No surgical intervention is considered until non-surgical therapy has been completed and assessed.
Stage 1: Patient Education and Risk Factor Modification
The first clinical step is improving oral hygiene technique and addressing risk factors. Smoking doubles the risk of periodontal disease and blunts the healing response to treatment. Poorly controlled type 2 diabetes independently accelerates bone loss. A periodontist will not proceed to deeper treatment without addressing these factors first.
Stage 2: Root Surface Debridement (Non-Surgical Treatment)
Root surface debridement (RSD) is the removal of bacterial biofilm and calculus from tooth roots below the gumline, carried out under local anaesthetic using hand instruments and ultrasonic scalers. It is delivered in quadrant sessions over 2–4 appointments. A reassessment 8–12 weeks after the final session determines whether pockets have reduced sufficiently or whether further intervention is needed.
Stage 3: Surgical Treatment
Patients with residual pockets of 6mm or above after RSD may require periodontal flap surgery. The gum is reflected to give direct access to the root surface and bone. Where significant bone defects exist, a bone graft or guided tissue regeneration membrane may be placed to encourage bone regrowth. Recovery is typically 1–2 weeks of reduced activity at the surgical site.
Stage 4: Supportive Periodontal Therapy
Once disease is stabilised, patients enter a maintenance programme of 3–4 monthly recall appointments. Evidence consistently shows that patients who skip maintenance re-develop active disease within 12–24 months.
Periodontal Treatment Options Compared
| Treatment | Best For | Approximate Cost (London) | Limitation |
|---|
| Root Surface Debridement | Mild to moderate periodontitis (4–6mm pockets) | £200–£600 per course | Does not resolve pockets above 6mm reliably |
| Periodontal Flap Surgery | Moderate to severe periodontitis (6mm+ pockets) | £800–£2,000 per quadrant | Requires healing time; some gum recession post-procedure |
| Bone Grafting | Vertical bone defects with regenerative potential | £1,000–£3,000 per site | Outcome depends on defect morphology and patient health |
| Supportive Periodontal Therapy | Post-treatment maintenance | £80–£150 per visit | Requires lifelong commitment |
When Should You See a Specialist Rather Than a General Dentist?
Referral to a periodontist is appropriate when pockets exceed 6mm, when bone loss is rapid or widespread, when non-surgical treatment has failed to stabilise the disease, or when surgical options are being considered. A Dentist London can carry out initial screening and manage mild gingivitis, but complex or advanced periodontitis warrants specialist assessment. If you notice sudden gum swelling, an abscess, or acute pain alongside loose teeth, seek an Emergency Dentist without delay, as acute periodontal abscesses require prompt drainage.
Frequently Asked Questions
How long does periodontal treatment take from start to finish?
A standard course of non-surgical treatment — root surface debridement plus reassessment — spans 3–4 months from the first appointment to the post-treatment review. Surgical treatment, if required, adds a further 3–6 months including healing time.
Is periodontal treatment painful?
Root surface debridement is performed under local anaesthetic and should not be painful during the procedure. Post-treatment sensitivity lasting 2–5 days is common, particularly in teeth with significant root exposure.
Can periodontal disease be cured completely?
Periodontal disease can be arrested and stabilised, but it cannot be cured in the way an infection is resolved with antibiotics. The bacterial biofilm reforms continuously, which is why lifelong supportive periodontal therapy is necessary to prevent recurrence.
Does periodontal disease affect general health?
Yes. Clinical evidence links active periodontitis to increased cardiovascular disease risk, poorer glycaemic control in diabetic patients, and adverse pregnancy outcomes including preterm birth. Treating periodontal disease reduces systemic inflammatory markers.
How much does a periodontist appointment cost in London?
An initial periodontal consultation in London typically costs £100–£200. A full course of root surface debridement ranges from £200–£600 depending on severity and number of appointments required.
At what pocket depth is tooth extraction considered?
Teeth with pocket depths above 8mm, grade 3 mobility, and furcation involvement (bone loss between tooth roots) are often considered beyond viable treatment. A periodontist will assess each tooth individually rather than applying a single threshold.
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