10 Year Follow-up on Reconstructive Bone Procedures for Peri-implantitis (periimpl10y)

June 30, 2026 updated by: Viveca Wallin Bengtsson, Kristianstad University

10 Year Follow-up After Surgical Treatment of Peri-implantitis Using a Bone Substitute With or Without a Resorbable Membrane: A Longitudinal Study

The purpose of this 10 year observational follow-up study was to evaluate the long-term outcomes of reconstructive surgical treatment of peri-implantitis. Two treatment approaches have been compared using a bone substitute with or without a resorbable membrane.The objective was to assess their effectiveness and determine wheter one treatment strategy provided superior long-term outcomes.

Participants were invited for clinical and radiographic examinations of the previously treated implant. Clinical assessments included probing pocket depth measurements, evaluation of bleeding on probing, presence of suppuration, and radiographic assessment of peri-implant bone levels.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

The objective of this 10-year observational follow-up study was to investigate the long-term clinical and radiographic outcomes of reconstructive surgical treatment and to evaluate potential differences between two reconstructive treatment protocols.

The study population consisted of patients previously treated for per-implantitis using one of the following approaches.

Group 1: Surgical treatment using a bone substitute material (Algipor) combined with a barrier membrane (Osseoquest)

Group 2: Surgical treatment using a bone substitute materail alone (Algipor)

At the time of treatment, all patients received systemic antibiotic therapy consisting of Amoxicillin 375 mg three times daily and Metronidazole 400 mg twice daily for 10 days, initiated one day before surgery.

The study aimed to provide further knowledge regarding the long-term effectiveness and stability of reconstructive peri-implantitis treatment and to investigate potential differences between the two treatment modalities.

Following surgery all patients participated in a structured supportive maintanance program with supportive periodontal therapy every third month and annual clinical evaluations.

At the 10 year follow-up examination, the implant(s) was assessed clinically and radiographically. Clinical parameters included probing pocket depht, bleeding on probing, suppuration, plaque accumulation and implant survival. Probing measurements were performed using a standardized probing force of 0.25 N with a calibrated periodontal probe.

Bleeding scores were recorded at four sites per implant using the following scale:

0=no bleeding

  1. bleeding point
  2. bleeding line
  3. drop of blood

Plaque accumulation was recorded as present or absent, following plaque disclosure.

To minimize examiner variability, all clinical examinations was performed by the same periodontist.

The primary outcome measures were radiographic bone fill and changes in probing pocket depth at treated implant sites. Secondary outcome measures included bleeding on probing, suppuration, plaque scores, and implant survival.

Statistical analyses were performed using parametric or non-parametric methods depending on data distribution. Statistical significance was defined as p< 0.05.

Patients received both oral and written information regarding the study and provided written informed consent prior to participation. Participation was voluntary and the participants could withdraw from the study at any time without consequences. The study had received approval from the appropiate ethical reiew authority.

Study Type

Observational

Enrollment (Actual)

16

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Sweden
    • Kristianstad
      • Kristianstad, Kristianstad, Sweden, 29198
        • Kristianstad University

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Sampling Method

Probability Sample

Study Population

Patients diagnosed with at least one dental implant with peri-implantitis

Description

Inclusion Criteria:

  • An implant demonstrating a progressive bone loss of ≥ 3 threads ( ≥ 1,8 mm) following the first year of healing
  • A vertical component needed to be present at the surgical intervention in order to justify the use of a bone augmentation procedure
  • Bleeding on probing and/or suppuration should also be present

Exclusion Criteria:

-

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

Cohorts and Interventions

Group / Cohort
Intervention / Treatment
Group 1
Bone reconstructive surgery with a bone graft material (Algipor) and a resorbable membrane (Osseoquest)
Procedure: Treatment with a bone graft and a membrane
Dental implants with a diagnosis of peri-implantitis treated with reconstructive surgery and a bone graft and a membrane
Group 2
Bone reconstructive surgery with a bone graft material (Algipor)
Procedure: Treatment with a bone graft
Dental, implants with a diagnosis of peri.implantitis treated with reconstructive surgery and a bone graft alone

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Bone fill
Time Frame: 10 years after surgical reconstrucyive bone procedures
Radographic bone fill measured mesial and distal in mm and percent at the implant on an intra-oral radiograph. Measurements will be performed by a blinded radiologist in mm and percent
10 years after surgical reconstrucyive bone procedures

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Probing pocket depths changes
Time Frame: 10 years after surgical reconstructive bone procedures
Changes in probing pocket depths at the implant measured at four sites in mm
10 years after surgical reconstructive bone procedures

Other Outcome Measures

Outcome Measure
Measure Description
Time Frame
Bleeding
Time Frame: 10 years after surgical reconstructive bone procedures
Bleeding on probing measured at the implant at four sites as present or absent
10 years after surgical reconstructive bone procedures
Graded bleeding
Time Frame: 10 years after surgical reconstructive bone procedures
Graded bleeding measured at the implant at four sites as: 0=no bleeding 1= point of bleeding 2=line of bleeding and 3=drop of bleeding
10 years after surgical reconstructive bone procedures

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Kristianstad University

Investigators

  • Study Director: Ann-Marie R Jansåker, Malmö University

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

March 1, 2000

Primary Completion (Actual)

January 1, 2013

Study Completion (Actual)

January 1, 2013

Study Registration Dates

First Submitted

June 25, 2026

First Submitted That Met QC Criteria

June 25, 2026

First Posted (Actual)

July 1, 2026

Study Record Updates

Last Update Posted (Actual)

July 2, 2026

Last Update Submitted That Met QC Criteria

June 30, 2026

Last Verified

June 1, 2026

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • P-I reconstructive surg 10 y

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

UNDECIDED

IPD Plan Description

May be shared upon request

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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