Fig. 6

Evaluation of soft tissue dynamics associated with periodontitis treatment by volumetric assessment (a—baseline scan (T0), b—follow-up scan (T1), and c—colour-coded map) and a novel gingival shape analysis using surface curvature (d—T0 and T1 scans, e—mean curvature (MC) and f—minimum curvature (Min)). Five different regions were selected based on the colour-coded map (c), i.e., two interdental with loss of the tissues above 1.0 mm (black arrows) and three central with changes below the 0.4 mm threshold (white arrows) (d)