Peri-implantitis is associated with progressive bone loss and has been reported as the most common biological cause of late-implant failure. 1 Implant loss is psychologically more challenging for patients than tooth loss due to the greater complexity and cost of remedial treatment combined. 2 Furthermore, future implant placement may not be possible if there has been severe bone loss. 3 The need for predictable surgical treatment for peri-implantitis is therefore highly clinically relevant.Heitz-Mayfield and Mombelli 4 investigated the success of treatment for peri-implantitis at 12 months. Although the majority of short-term outcomes were favourable, incomplete resolution of peri-implantitis, disease progression and implant loss were also commonly observed. Surgical