Reconstructive treatment of peri-implantitis infrabony defects of various configurations: 5-year survival and success.

Abstract

AimTo present the 5 years outcomes of a reconstructive surgical protocol for peri‐implantitis defects with different morphologies, by means of deproteinized bovine bone mineral with 10% collagen (DBBMC).Material and MethodsThe original population of this case series consisted of 75 patients with one crater‐like defect and probing depth (PD) ≥6 mm. After flap elevation, defects were assigned to one characteristic class and treated by means of DBBMC. Following healing, patients were enrolled in an individualized supportive periodontal/peri‐implant (SPT) program.ResultsFifty‐one patients reached the 5 years examination, as 11 patients were lost to follow‐up and 13 implants were removed. Overall treatment success was registered in 29 patients (45.3%). Mean PD and BOP significantly decreased at one year and remained stable for the rest of observation period. No correlation was found between implant survival rate and defect configuration (p = 0.213). Patients, who did not fully adhere to the SPT, experienced more complications and implant loss than those who regularly attended recall appointments (p = 0.009).ConclusionsThe proposed reconstructive treatment resulted in a high 5 years implant survival rate in patients who fully adhered to SPT. The resolution of the peri‐implantitis defect does not seem significantly associated with the defect configuration at the time of treatment.