Assessment of Residual Bone Level Around Explanted Implants and Description of the Systemic and Local Characteristics. A Retrospective Study

Implant explantations were typically performed once bone loss reached approximately 60% of the implant length. They were most often observed in advanced cases of peri-implantitis and in patients with high-risk profiles for periodontal breakdown, such as a history of periodontal disease or heavy smoking habits.