Aims The study's aim was to assess the clinical outcome 6 and 12?months after a nonsurgical treatment of peri‐implantitis per se or in conjunction with a combination of local antiseptic and anti‐inflammatory treatment. Materials and methods Included were 69 patients with periodontitis, with 106 implants, diagnosed with peri‐implantitis. Peri‐implantitis was defined as radiographic bone loss ≥3?mm, probing depth (PD)?≥?6?mm, with bleeding on probing. Group M peri‐implantitis was treated with ultrasonic debridement and soft tissue curettage. Group P had additional implant surface treatment with rotatory hand piece composed of chitosan bristle, soft tissue curettage combined with application of 0.95% hypochlorite and 1 mg minocycline HCl. Results After 6 months, both groups demonstrated significant reduction of mean plaque index, PD, and clinical attachment level (0.71?±?0.57, 0.81?±?0.55; 4.77?± 0.73?mm, 4.42?±?0.5?mm; 5.03?±?0.86?mm, 5.13?±?0.73?mm; respectively) and bleeding on probing. After 6 and 12?months, group P showed significantly better PD results compared to group M. The bleeding was significantly less in group P after 12?months (15.3%?±?6.2, 25.1%?±?8.2, respectively). Conclusions Adjunctive treatment with local antiseptic and anti‐inflammatories during mechanical phase was positively associated with inflammation reduction and connective tissue reattachment.
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