Peri-Implantitis Treatment

What is peri-implantitis?

Peri-implantitis is an inflammatory disease of the soft and hard tissues surrounding an osseointegrated dental implant. The two diagnostic markers are inflammation of the peri-implant mucosa (typically with bleeding on probing or suppuration) and progressive radiographic bone loss beyond the initial physiological remodelling. Distinct from peri-mucositis — which is reversible soft-tissue inflammation without bone loss — peri-implantitis carries a real risk of implant failure if it is not arrested.

Prevalence figures vary across studies but consistently sit in the range of 10-30% of implant-treated patients over time. Risk factors include a history of periodontitis, poor plaque control, smoking, poorly controlled diabetes, residual cement around the implant, and certain implant surface characteristics. The clinic that places implants is the same clinic that should be running supportive peri-implant therapy — peri-implantitis is a long-tail liability when maintenance is neglected.

Diagnosis basics

Modern diagnostic frameworks (2017 World Workshop, EFP S3 Guideline) tie peri-implantitis diagnosis to three findings: clinical signs of inflammation (bleeding on probing and/or suppuration), increased probing pocket depth compared to previous measurements, and progressive bone loss visible radiographically. Where baseline measurements are unavailable, bone loss is typically assessed against the implant's expected loading position; a common threshold used in research is ≥3 mm of bone loss apical to the most coronal portion of the intraosseous part of the implant, in the presence of inflammation.

In day-to-day practice, the warning signs are: bleeding on probing at the implant site, an increase in probing depth over recall visits, suppuration, and radiographic bone loss confirmed on serial periapical or bitewing imaging. The earlier the diagnosis, the more effective non-surgical therapy is.

Non-surgical treatment — the first step

Non-surgical peri-implantitis management is the foundation of treatment. Even when surgical therapy is later required, the non-surgical phase prepares the tissue and validates the patient's compliance and oral hygiene capability before invasive procedures.

1. Oral hygiene reinforcement and risk-factor control

Patient-side interventions are the first lever: targeted oral hygiene instruction calibrated to the specific implant site, interdental brushing technique adapted to the prosthesis, chemical adjuncts as needed (chlorhexidine for short-term use, daily essential-oil rinses in maintenance), smoking cessation referral, glycaemic control coordination with the patient's physician. None of these are direct treatment but all are non-negotiable preconditions to mechanical therapy success.

2. Mechanical biofilm and calculus removal

The instrumentation phase combines:

• Sub- and supragingival biofilm removal using a low-abrasion powder air polishing system with a dedicated subgingival nozzle. This is the modern standard of care for the soft biofilm layer that hand instrumentation alone cannot fully reach on textured implant surfaces.
• Ultrasonic instrumentation with implant-safe tips (typically PEEK-tipped or carbon-fibre-tipped piezo inserts) for any calcified deposits, with care taken not to scratch the titanium surface.
• Hand instrumentation with implant-safe scalers (titanium, carbon fibre, plastic, or specifically validated curettes) for surfaces that require finer tactile control.

The air polishing step is where the modern evidence base is strongest. Low-abrasion powders — erythritol (~14 µm particle size, EMS) or glycine (~25 µm, NSK Perio Mate Powder, equivalent on other systems) — are validated for use on titanium implant surfaces without measurable structural damage at clinical pressures. Sodium bicarbonate is too abrasive and is not used for subgingival peri-implant work.

3. Antimicrobial adjuncts

Local antimicrobials are sometimes added to the mechanical phase — local delivery of chlorhexidine, sustained-release minocycline, or photodynamic therapy in some protocols. Systemic antibiotics are reserved for cases with significant suppuration or where progression is rapid; their routine use is not supported. Clinical decisions are case-specific and made by the treating clinician.

4. Reassessment at 8-12 weeks

The non-surgical phase outcome is evaluated 8-12 weeks after instrumentation. Success is defined as resolution of bleeding on probing, reduction in probing depth, and no further radiographic bone loss. If the disease is arrested, the case transitions to supportive peri-implant therapy. If not, surgical intervention is considered.

Air polishing equipment for peri-implant care

This is the equipment decision peri-implant-active clinics actually make. Three systems lead the category for subgingival air polishing on implants:

The erythritol question for peri-implant work

The most-cited evidence base for low-abrasion subgingival air polishing on implant surfaces is built around erythritol — driven primarily by EMS's research investment and the Perioflow workflow. Erythritol's very small particle size (~14 µm) and rounded morphology give it the gentlest profile for textured titanium surfaces.

That said, glycine has substantial independent evidence for safe use on implant surfaces at appropriate clinical pressures, and clinics outside the EMS ecosystem deliver excellent peri-implant maintenance with glycine-based protocols (NSK Perio Mate Powder, Mectron's glycine, equivalent formulations on other systems). The clinical outcome difference for routine maintenance is subtle. The certification difference (GBT certification, marketing assets, patient-facing protocol) is where EMS has the clear edge.

See our erythritol vs glycine explainer for the deeper powder comparison.

When to add surgical therapy

Surgery is considered when non-surgical therapy fails to arrest disease progression, when defects are anatomically suited to regeneration, or when the implant position and prosthesis design make non-surgical instrumentation incomplete. Surgical options include:

• Access flap surgery for direct visualisation, decontamination of the implant surface, and modification of peri-implant anatomy where it impedes hygiene.
• Resective surgery to eliminate or reduce peri-implant pockets where regenerative therapy is not indicated.
• Regenerative surgery with bone graft and barrier membrane in suitable defects (typically contained, intrabony) to attempt to restore lost bone support.
• Implant removal in cases of severe bone loss, mobility, or failed restorative outcome.

Implant surface decontamination during surgery uses the same biofilm-removal logic as non-surgical care — air polishing with low-abrasion powder, plus mechanical and chemical adjuncts as the case demands. Decisions on technique are clinician-specific and case-specific.

Supportive peri-implant therapy (long-term maintenance)

After active treatment, supportive peri-implant therapy is the difference between a stable implant and a returning peri-implantitis case. The protocol typically includes:

• Recall intervals calibrated to risk. Low-risk: 6 months. Moderate: 3-4 months. High-risk (periodontitis history, smoker, poor glycaemic control, technically demanding prosthesis): 2-3 months.
• Routine biofilm removal at every recall using low-abrasion air polishing with subgingival nozzle around the implant.
• Reassessment at each visit: probing depths, bleeding on probing, suppuration, recession changes. Annual radiographic monitoring for bone level changes.
• Patient-side review: hygiene technique, motivation, risk-factor status, prosthesis cleanliness.
• Early intervention if signs of peri-mucositis return — the goal is to never let peri-mucositis progress to peri-implantitis.

The economics of supportive therapy favour both patient and practice: a single peri-implantitis surgery can cost more than 5-10 years of structured maintenance. From a clinic margin perspective, the equipment investment in a quality subgingival air polishing setup pays for itself across the active implant patient base within a few years.

Common clinical pitfalls

• Late diagnosis. Peri-implantitis treated at <2 mm bone loss has dramatically better non-surgical outcomes than at >3 mm. Annual radiographic monitoring matters.
• Sodium bicarbonate powder on implant surfaces. Don't. It's too abrasive and is not validated for subgingival peri-implant use. Use erythritol or glycine.
• Metal scalers directly on the implant surface. Stainless-steel scalers can scratch titanium and create biofilm-trapping micro-roughness. Use implant-safe instruments (PEEK, carbon fibre, validated plastic curettes).
• Skipping risk-factor management. Mechanical treatment without smoking cessation or glycaemic control management has a high relapse rate. Treat the disease, not just the inflammation.
• Inadequate maintenance intervals. Stretching recall to 12 months in a high-risk patient is a recipe for recurrence. Calibrate to risk, not to schedule convenience.
• Confusing peri-mucositis with peri-implantitis. Different conditions, different treatment urgency. Don't escalate to surgery on a peri-mucositis case; don't under-treat a peri-implantitis case as if it were peri-mucositis.

Equipment buying questions specific to peri-implant work

When you're equipping your operatory specifically with peri-implant maintenance in mind, the questions to ask distributors:

• Which exact subgingival nozzle is included with the unit? Is it disposable / single-use? Cost per nozzle?
• What pocket depth range is the nozzle validated for?
• Which powder is validated for peri-implant use on this unit, in writing?
• Implant-safe scaler tips compatibility — PEEK-tipped, carbon-fibre — included or extra?
• Training on peri-implant air polishing technique — manufacturer-led or distributor-led?
• Local availability of replacement nozzles and powder — stocked locally or imported?

Related guides

• EMS Perioflow vs NSK Perio-Mate — the two leading subgingival handpieces compared.
• Erythritol vs glycine powders — the powder decision for subgingival work.
• Guided Biofilm Therapy protocol — the EMS 8-step workflow.
• NSK M.I.T. Protocol — EFP S3-aligned periodontal pathway covering peri-implant care.
• Mectron Combi Touch — the European combined unit with subgingival nozzle included.
• How to choose a dental air polisher — the 7-question buying framework.