A Proposed New Index for Clinical Evaluation of Interproximal Soft Tissues: The Interdental Pressure Index

Figure 7

A case scored as grade I (acute active form). This biopsy of oral mucosa shows marked epithelial hyperplasia, a mild-to-moderate inflammatory infiltrate, and a large number of blood vessels immunostained with the anti-CD34 antibody (CD34, ×100 magnification).