Inclusion Criteria:  Probing pocket depth of ≥6 mm Bleeding and/or suppuration on probing at ≥3 aspects per implant Documented radiographic bone loss of ≥2 mm.  Exclusion Criteria:  Implants with bone loss ≥80% of implant length will not be considered. No medical conditions prohibiting non-surgical/surgical treatment of peri-implantitis Implant(s) in function ≥1 year