**9.10 Resective therapy**

Resective surgery has been shown to be effective in the reduction of BOP, probing depths and clinical signs of inflammation. The basic principles include the elimination of the peri-implant osseous defect using ostectomy and osteoplasty as well as bacterial decontamination. Additionally, smoothening and polishing of the supracrestal implant surface may be done. Surgical pocket elimination and bone recontouring in combination with plaque control before and after surgery showed effective in treating peri-implantitis [94].
