Peri-Implantitis: Symptoms, Causes, Stages and Treatment

Peri-Implantitis: Symptoms, Causes, Stages and Treatment

Dental implants are designed to replace missing teeth for many years, but like natural teeth, they still depend on healthy gums and good oral hygiene. When bacteria build up around an implant, they can trigger an inflammatory condition called peri-implantitis that gradually damages the bone supporting the implant. Left untreated, it can become a leading cause of implant failure.

The encouraging news is that peri-implantitis doesn’t develop overnight, and early intervention can make a significant difference. In its earliest stage, inflammation is limited to the gum tissue and can often be managed with professional cleaning and improved home care. Even when bone loss has begun, prompt diagnosis and appropriate treatment may help stop the disease from progressing and support the long-term stability of the implant. 

This guide explains the signs and symptoms of peri-implantitis, what causes it, who is most at risk, how the condition progresses, and which treatment options are supported by current evidence. You’ll also learn how peri-implantitis differs from peri-implant mucositis and what you can do to help reduce the risk of future implant complications. 

Signs and Symptoms of Peri-Implantitis

Peri-implantitis is a plaque-associated disease affecting the tissues around a dental implant, characterised by gum inflammation and progressive loss of the bone supporting the implant. This definition is based on the 2017 World Workshop consensus (Berglundh et al., Journal of Clinical Periodontology).

At home, the warning signs you might notice include:

• Bleeding when brushing around the implant
• Red or swollen gums around the implant
• Pus, a bad taste, or persistent bad breath
• Gum recession exposing the metal of the implant
• A loose implant in the later stages

Pain is often absent, which is one reason the disease may go unnoticed until significant damage has occurred. 

In the dental chair, clinicians look for bleeding or pus on gentle probing, increased probing depth, and bone loss visible on X-rays. Dentists compare these findings with baseline records taken when the implant was placed, as progression over time helps confirm the diagnosis. 

The contrast with health is clear. A healthy implant typically shows no redness, no bleeding on probing, no swelling, and no pus. Therefore, bleeding when the hygienist probes an implant is not considered normal and should be investigated. It can be one of the earliest signs to act on. 

What Causes Peri-Implantitis and Who Is Most at Risk?

The primary cause is bacterial plaque, a biofilm that accumulates on the implant surface below the gumline. The immune response to these bacteria can lead to inflammation, which gradually damages the bone supporting the implant. In this respect, peri-implantitis is similar to periodontitis around natural teeth. 

A second, less obvious cause is residual dental cement left under the gum when a crown is fitted. Excess cement can act as a plaque trap and a constant irritant, so even patients with good oral hygiene may develop inflammation around a cement-retained crown.

Beyond these direct causes, certain factors increase the risk:

• Smoking: associated with a higher risk of peri-implantitis. Reis et al. (2025) reported implant-level peri-implantitis in 5.2% of non-smokers, with higher rates observed across the overall study population.
• History of periodontitis: associated with a 2.17-fold higher risk of peri-implantitis and a 1.69-fold higher risk of implant loss (Sgolastra et al., 2015 meta-analysis).
• Poor daily oral hygiene around the implant.
• Uncontrolled diabetes, which can impair healing and immune response.
• Lack of keratinized (firm, attached) gum tissue around the implant.

Smoking and previous gum disease are among the strongest predictors of peri-implantitis. However, a history of periodontitis does not rule out dental implants. It simply places you in a higher-risk group that requires closer monitoring and stricter maintenance. Following proven gum health tips before and after implant placement can help reduce that added risk.

Peri-Implantitis vs Peri-Implant Mucositis: What’s the Difference?

The key difference is bone loss. Peri-implant mucositis is inflammation confined to the soft tissue around the implant, with bleeding on probing but no bone loss, and it is generally reversible with appropriate treatment. Peri-implantitis involves progressive loss of the supporting bone and cannot be fully reversed.

Mucositis is the recognised precursor to peri-implantitis, according to Heitz-Mayfield and Salvi in the 2017 World Workshop consensus. Detecting and treating disease at the mucositis stage may help prevent bone loss from developing.

The good news? Peri-implant mucositis often resolves once effective daily plaque control is re-established. However, the visible inflammation may take longer than three weeks to settle, so patients should not expect immediate results after a professional cleaning. 

A natural-teeth analogy helps: peri-implant mucositis is to gingivitis what peri-implantitis is to periodontitis. However, disease around implants may progress more quickly because implants lack the periodontal ligament and other supporting structures found around natural teeth.

The takeaway is simple. At the mucositis stage, professional treatment and effective plaque control can often resolve the inflammation. Once bone is lost, it does not regrow on its own.

Stages of Peri-Implantitis and How Fast It Progresses

The disease generally follows a recognisable pathway: healthy peri-implant tissue, then peri-implant mucositis with soft-tissue inflammation only, followed by early peri-implantitis with initial bone loss and deeper pockets, then moderate disease with progressive bone loss, pus, and recession, and finally advanced disease with extensive bone loss, implant mobility, and a risk of implant loss. 

How fast does it progress? The onset varies from months to years after implant placement, so there is no fixed timeline. However, research suggests that peri-implantitis may progress in a non-linear, accelerating pattern and can progress more quickly than periodontitis around natural teeth. One proposed reason is that implants lack a periodontal ligament and have different blood supply characteristics than natural teeth.

The disease can also progress silently. Pain is usually minimal, so many patients only discover the problem at a moderate or advanced stage during a routine examination and X-ray. Regular recall visits with clinical assessment, including probing, remain one of the most reliable ways to detect the disease early. 

In practice, early disease is often characterised by bleeding and slight pocket deepening that may only be detected during a clinical examination. Late disease is different: visible gum recession, pus, and eventually a loose implant that the patient can feel. By that point, saving the implant may become much more difficult.

How Is Peri-Implantitis Treated?

Treatment typically follows a staged approach set out in EFP and SDCEP guidance: non-surgical therapy first, followed by surgery if inflammation and deep pockets persist, with implant removal reserved as a last resort.

Clinicians work toward clear treatment goals: probing depths of 5 mm or less, no bleeding or pus on probing, and no further bone loss on X-rays. Reaching these targets generally indicates that the disease is under control.

Non-Surgical Treatment

The first line of therapy is professional mechanical plaque removal (PMPR), including cleaning below the gumline. Dental professionals use instruments designed to minimise damage to the implant surface, including titanium or plastic curettes, air polishing, and ultrasonic devices with protective tips.

Supporting measures are equally important. These include improved daily oral hygiene at home, short-term use of antiseptic rinses such as chlorhexidine when appropriate, and removal of residual cement or adjustment of poorly fitting crowns that can trap plaque.

Honest expectations are important. Non-surgical therapy can reliably resolve peri-implant mucositis and may be effective in some cases of early peri-implantitis. However, established disease with deep pockets often requires surgical access, as biofilm on rough implant surfaces may not be completely removed without direct visual access.

What About Antibiotics? Current EFP and SDCEP guidance does not recommend the routine use of antibiotics, as they cannot remove the attached biofilm. In selected cases, antibiotics may be used as an adjunct to mechanical treatment, but they are not a substitute for effective biofilm removal.

Surgical Treatment and Implant Removal

When deep pockets persist after non-surgical therapy, the next step may be access flap surgery. The gum is lifted so the clinician can see the implant surface directly and decontaminate it under direct vision, which is difficult to achieve with non-surgical treatment alone.

The surgical approach then depends on the shape of the bone defect. Contained defects may be suitable for regenerative surgery with bone grafts, which can help rebuild lost supporting bone. Suprabony defects are often managed with resective surgery and, in selected cases, implantoplasty, where exposed implant threads are smoothed to help reduce plaque retention. Soft-tissue grafts may also be used to increase the width of keratinized tissue around the implant when appropriate.

Long-term results are encouraging but not perfect. Across studies with follow-up periods of five years or more (Monje et al., 2025, Periodontology 2000), disease resolution was reported in 58.6% of cases, bone loss remained stable in 69.6%, and implant survival reached 88.6%. However, 27.2% of cases required additional treatment, and the risk of recurrence was reported to be substantially higher when probing depths of 6 mm or more remained after surgery.

Implant removal is generally reserved for cases where bone loss continues to progress despite treatment. After healing, which may include bone grafting when needed, replacement with a new implant may be possible.

Can Peri-Implantitis Be Cured and How Can It Be Prevented?

Peri-implantitis can often be stopped and stabilised, but it cannot usually be cured in the sense of returning the implant to its original condition, because bone lost to the disease does not regenerate on its own. Regenerative surgery with bone grafting may help rebuild some lost supporting bone in favourable, contained defects, but complete regeneration is uncommon. 

The realistic goal is to arrest the disease: healthy, non-bleeding tissue, stable bone levels on X-rays, and an implant that functions comfortably for years. Long-term data suggest that this outcome is achievable for many treated patients. 

Prevention, however, is generally more predictable than treatment. The essentials are:

• Daily plaque control around implants using interdental brushes, a water flosser, and low-abrasive toothpaste.
• Regular professional hygiene visits, including implant probing, at least twice a year, or as recommended by your dental professional.
• Quitting smoking.
• Keeping diabetes well controlled.
• Treating gum disease before and after implant placement.

The numbers highlight the importance of prevention. Around 1 in 4 surgically treated patients may require additional treatment, so consistent maintenance is generally more effective and less costly than treating advanced disease. Practical guidance on caring for dental implants covers the daily routine in detail. 

This is why Ringway Dental builds structured recall and hygiene support into every implant journey. Regular monitoring and maintenance help protect the investment patients make in their implants by identifying potential problems early.

Peri-Implantitis: FAQ

How much does peri-implantitis treatment cost?

The cost depends on how far the disease has progressed and which treatment is required. Non-surgical treatment is generally the least expensive option, while flap surgery, bone grafting, and implant removal with replacement typically involve higher costs. 

Catching the disease at the mucositis stage is generally less costly and less complex than treating advanced peri-implantitis surgically. Because every case differs in severity and defect type, the only reliable cost estimate comes from a personalised quote after a clinical examination and X-rays. 

Is peri-implantitis reversible?

Not completely. Peri-implant mucositis, the earlier stage affecting only the soft tissues, is reversible once plaque control is restored. Peri-implantitis is different because bone lost to the disease does not regenerate on its own. 

Treatment therefore aims to halt disease progression and stabilize the implant rather than reverse the damage. However, regenerative surgery with bone grafting may help rebuild some lost supporting bone in suitable, contained defects, which can improve the implant’s long-term prognosis.

Do antibiotics cure peri-implantitis?

No. Antibiotics alone cannot resolve peri-implantitis because the bacteria are protected within a biofilm firmly attached to the implant surface. The biofilm must be physically disrupted and removed through mechanical treatment. Antibiotics may be used as an adjunct in selected cases, but they are not effective as a standalone treatment.

For this reason, EFP and SDCEP guidance does not recommend the routine use of antibiotics. They may occasionally be used as an adjunct to mechanical treatment in selected cases, but they are not recommended as a standalone treatment for peri-implantitis.

Does laser treatment work for peri-implantitis?

Not as a standalone treatment. Current evidence does not show that lasers or photodynamic therapy significantly outperform standard professional mechanical debridement in the treatment of peri-implantitis.

At best, lasers may serve as an adjunct to mechanical decontamination. Since the disease is driven by biofilm attached to the implant surface, physical removal of that biofilm remains the evidence-based foundation of treatment, regardless of any additional technologies used. 

Will my implant need to be removed?

In most cases, no. Implant removal is a last resort, reserved for implants with ongoing bone loss or mobility despite appropriate non-surgical and surgical treatment. 

The long-term data are reassuring: implant survival after surgical treatment averaged 88.6% across studies with follow-up periods of five years or more (Monje et al., 2025). Implants treated before advanced bone loss are more likely to be retained, and early diagnosis with consistent maintenance remains an important factor in long-term implant survival. 

How can I keep my implants healthy after treatment?

Clean around the implant daily with interdental brushes or a water flosser, attend professional maintenance visits as recommended by your dental professional, and stop smoking. At recall appointments, your dentist should examine the implant, including probing, and take periodic X-rays to detect any recurrence early. 

Supportive maintenance is one of the most important measures for reducing the risk of recurrence, because the disease may return if plaque accumulates and deep pockets persist or recur. Patients who adhere to a regular recall schedule are more likely to maintain stable treatment outcomes. 

Peri-implantitis is common, but it is often preventable when problems are identified at the mucositis stage and treated before bone is lost. That is why regular maintenance visits and professional monitoring around your implant are just as important as the surgery that placed it.

At Ringway Dental, our preventive approach means every implant patient receives ongoing maintenance and careful monitoring to help protect their implant for the long term. Whether you already have an implant that needs attention or are considering one for the first time, our team of implant dentists in Manchester is here to help. Book a consultation to discuss your treatment options and keep your smile healthy for years to come.

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