Figure 2. Schematic drawing of measurements. The bottom of the defect was set at the most apical point of the planed root surface, the most coronal point of newly formed cementum on the root surface was marked by a straight line, and the most apical point of the long junctional epithelium was also marked by a straight line. The newly formed bone was distinguished from the preexisting alveolar bone by its color.

B: bone, PDL: periodontal ligament, C: cementum, JE: junctional epithelium, DH: defect height, NC: new cementum, CTA: connective-tissue adhesion, EA: epithelial adhesion, NB: new bone.