Defect angle as prognostic indicator in the reconstructive therapy of peri‐implantitis

A recent study examined the influence of bone defect characteristics caused by peri-implantitis on clinical resolution and radiographic bone gain after reconstructive surgery. The secondary analysis of a clinical trial included 33 patients with 48 implants affected by peri-implantitis. The study found that defect configuration was significantly associated with radiographic bone gain, favoring class 1B defects. Defect angle (DA) showed a strong statistical significance with bone gain, with a mean DA of 40° resulting in 1.85 mm of bone gain. To achieve ≥1 mm of bone gain, DA must be <57°, while ≥2 mm of bone gain requires a DA <30°. Baseline DA can predict radiographic bone gain in reconstructive therapy.