20-25 Year Follow-Up on Regenerative Bone Procedures for Peri-Implantitis

The goal of this 20-25-year observational study is to investigate the outcomes of bone regenerative surgery in peri-implantitis. Two different techniques will be compared: surgery with a bone substitute alone and surgery with a bone substitute combined with a membrane, to determine their effectiveness and assess whether one is more effective than the other. The intention of this observational study is to learn more about the long-term effects of bone regenerative surgery in patients with peri-implantitis. Patients will be called in for a clinical and radiographic examination of the surgically treated implant(s). Probing pocket depths, presence of pus, bleeding around the implant (s) and a radiograph of the implant (s). To be able to compare with the 1, 3, 5 and 10 year measurements.

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: \-