Peri-implantitis: Causes, Symptoms and Treatment Options
Understanding how infection and inflammation can affect the tissues around dental implants, the signs to look for, and the professional treatment approaches that may help manage the condition.
Dental implants rely on healthy surrounding bone and gum tissue for long-term stability. The implant fixture integrates with the jawbone through a process known as osseointegration, and the gum tissue forms a protective seal around the restoration, helping to guard against bacterial infection.
In some cases, inflammation and infection may develop in the tissues surrounding an implant — a condition known as peri-implantitis. This condition affects both the gum tissue and the supporting bone, and can lead to progressive bone loss if not identified and managed appropriately.
Peri-implantitis often begins as a milder inflammatory condition called peri-implant mucositis, which affects only the gum tissue. If the inflammation is not addressed at this early stage, it may progress to involve the bone, at which point it is classified as peri-implantitis. Early professional evaluation can help determine the most appropriate management approach and may support the continued stability of the implant.
What Is Peri-implantitis?
Peri-implantitis is an inflammatory condition that affects the tissues surrounding a dental implant, involving both the soft gum tissue and the supporting bone. It is characterised by infection that leads to progressive destruction of the bone around the implant fixture.
The condition often begins as gum inflammation — redness, swelling, and bleeding around the implant — before progressing to involve deeper structures. As bone loss occurs, the stability of the implant may become compromised, and the implant may eventually fail if the condition is not managed.
Peri-implantitis is distinct from peri-implant mucositis, which affects only the gum tissue without bone loss. However, untreated mucositis may progress to peri-implantitis in some cases, which underscores the importance of regular dental implant maintenance and monitoring.
Professional assessment, which may include clinical examination and dental imaging, is required to confirm the diagnosis and assess the extent of bone involvement.
Causes of Peri-implantitis
Multiple factors may contribute to the development of peri-implantitis. Understanding these risk factors can help patients and dental professionals work together to manage implant health and reduce the likelihood of complications.
Bacterial Plaque Accumulation
The primary cause of peri-implantitis is the build-up of bacterial plaque on the implant surface and around the gum margin. When bacteria are not removed through effective daily cleaning, they can trigger an inflammatory response that progressively damages the supporting tissues.
Poor Oral Hygiene
Inadequate or incorrect cleaning techniques around implant restorations can allow plaque to accumulate in areas that are difficult to reach. Implant restorations may require specialised cleaning techniques and tools to maintain adequate hygiene.
Smoking and Lifestyle Factors
Smoking is a significant risk factor for peri-implantitis. It impairs blood flow to the gum tissue, reduces the body's ability to fight infection, and slows healing. Other lifestyle factors, including alcohol consumption, may also contribute to increased risk.
Previous Gum Disease
Patients who have a history of periodontal disease are at increased risk of developing peri-implantitis. The same bacterial populations and inflammatory pathways that contribute to gum disease around natural teeth can affect the tissues surrounding implants.
Excessive Bite Forces
Bruxism, clenching, or an uneven bite distribution can place excessive mechanical stress on the implant and surrounding bone. These forces may contribute to the breakdown of supporting tissues, particularly when combined with inflammation.
Systemic Health Conditions
Certain systemic conditions, such as diabetes and immune-related disorders, can affect the body's inflammatory response and its ability to heal. Patients with these conditions may be more susceptible to developing peri-implantitis and may require closer monitoring.
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Signs and Symptoms of Peri-implantitis
The signs and symptoms of peri-implantitis may vary depending on the severity of the condition. Some patients may experience obvious symptoms, while in other cases the condition may progress with relatively subtle signs. Common indicators include:
Not all of these symptoms will necessarily be present at the same time, and some may only become apparent as the condition progresses. Professional assessment is recommended if any changes are noticed around a dental implant.
Potential Effects on Implant Stability
If peri-implantitis is not identified and managed, the progressive loss of supporting bone can have significant consequences for the implant and the patient's overall oral health.
Loss of supporting bone is the most significant concern associated with peri-implantitis. As the bone around the implant gradually recedes, the foundation that holds the implant in place becomes compromised. The extent and pattern of bone loss varies between individuals and depends on factors such as the severity of infection and the patient's overall health.
Reduced implant stability may develop as bone support diminishes. Patients may notice that the implant feels less secure, or the crown may begin to move slightly. Changes in bite function may also occur as the position or stability of the implant is affected.
In advanced cases, peri-implantitis may lead to implant failure, where the implant can no longer function effectively and may require removal. In some situations, a replacement implant may be considered following appropriate healing and, if needed, bone grafting to rebuild the supporting structure.
Treatment Approaches for Peri-implantitis
Treatment for peri-implantitis depends on the clinical findings and the severity of the condition. A thorough assessment is essential to determine the extent of bone loss and inflammation before identifying the most appropriate management approach. Options vary depending on severity and may include:
Professional Cleaning Around the Implant
Specialised professional cleaning of the implant surface and surrounding tissues may help manage infection by removing bacterial deposits. Non-metallic instruments and antimicrobial agents may be used to clean the implant without damaging its surface, which may help reduce inflammation.
Management of Gum Inflammation
Treatment may involve targeted management of the inflammatory response, including professional debridement, antimicrobial therapy, and ongoing monitoring. Patients may also receive guidance on optimising their home care routine to support treatment outcomes.
Monitoring Implant Stability
Regular assessment of implant stability through clinical examination and imaging allows the dental team to track the progression of the condition and evaluate the effectiveness of treatment. This ongoing monitoring is an important part of managing peri-implantitis.
Surgical Intervention in Advanced Cases
Where peri-implantitis has progressed significantly, surgical treatment may be considered. This can involve accessing the implant surface to thoroughly clean the affected area and, in some cases, placing bone graft material to help rebuild lost bone support around the implant.
Implant Removal and Replacement
In some situations where the implant can no longer be maintained, implant removal may be necessary. Following adequate healing, and depending on the condition of the bone, replacement with a new implant may be considered as part of a comprehensive treatment plan.
Importance of Early Implant Assessment
Early identification of peri-implantitis may help protect implant stability and improve the potential for successful management. Because the condition can progress gradually — sometimes without causing significant discomfort in the early stages — regular professional assessment is an important part of long-term implant care.
Professional examination may include visual assessment of the gum tissue, probing to measure pocket depths around the implant, and dental imaging to evaluate bone levels. These investigations help build a comprehensive picture of the implant's condition and guide treatment planning.
Long-term implant health often requires regular monitoring and maintenance. Patients who attend regular professional appointments may benefit from earlier detection of any changes, which can support timely intervention and help preserve implant function.
Assessment and treatment planning for dental implant concerns are available at our London clinic, where professional evaluation can help determine appropriate management options.
Peri-implantitis Assessment
If inflammation or discomfort develops around a dental implant, professional assessment can help determine whether peri-implantitis or another implant-related condition is present and identify appropriate treatment options.