Management of Peri-implantitis: Non-surgical Treatment of Peri-implantitis.

The goal of this clinical trial is to compare non-surgical treatment by mechanical debridement with air-polishing in peri-implantitis. The main question it aims to answer is:• Does non-surgical treatment of peri-implantitis with an air-polishing devise (Perioflow® EMS, Nyon Switzerlad) provide a better treatment result than conventional cleaning with mechanical instruments?Participants will receive non-surgical treatment of peri-implantitis either with mechanical debridement and with an air-polishing devise.The study has a split mouth design and includes patients with at least two implants. At least one implant will be treated with each method in all patients. Researchers will compare pocket depth and bleeding/suppuration on probing in implants treated with the two methods to see if either of them is more efficient in treatment of peri-implantitis.

Inclusion Criteria:Referred to TkNN (Tannhelsetjenestens kompetansesenter for Nord-Norge) for treatment of peri-implantitisParticipants should have at least two implants with peri-implantitis according to the diagnostic criteria from the 2017 Chicago Consensus Meeting.The implants must be separated by a distance corresponding to at least one tooth position (about 7 mm).Exclusion Criteria:Cemented prosthetic reconstructions, individuals smoking more than 10 cigarettes per day, individuals with diabetes and poor control of blood glucose levels and implants that are preferably to be extracted due to prognosis or function, are excluded.