Surgical therapy of single peri-implantitis intrabony defects, by means of deproteinized bovine bone mineral with 10% collagen

Aim To evaluate the efficacy of a reconstructive surgical procedure in single peri‐implantitis infrabony defects. Methods Seventy‐five patients with one peri‐implantitis crater‐like lesion with pocket depth (PD) ≥ 6 mm, were included. Each defect was assigned to one characteristic class, by an independent examiner. After implant decontamination, defects were filled with deproteinized bovine bone mineral with 10% collagen. Results At 1‐year follow‐up, four patients were lost and six implants removed. Treatment success, PD ≤5 mm and absence of suppuration/bleeding on probing (BOP), was obtained in 37 (52.1%) of the 71 implants examined. PD was significantly reduced by 2.92 ± 1.73 mm (p