Fig. 1From: Clinical outcomes following surgical treatment of peri-implantitis at grafted and non-grafted implant sites: a retrospective analysisCombined surgical therapy of peri-implantitis at respective defect sites: class I: intrabony component showing either a buccal dehiscency with a semicircular component (Ib) or a buccal dehiscency with a cicumferential component (Ic). Class II: supracrestal component. The red rectangles indicate the surface areas undergoing an implantoplasty, while the green areas indicate the defect areas undergoing augmentative therapyBack to article page