Figure 2From: Assessment of tissue oxygenation of periodontal inflammation in patients with coronary artery diseases using optical spectroscopy % tissue hemoglobin oxygen saturation (A) and total Hb indices (B) derived from the relative concentrations of Hb and HbO 2 . Indices were compared between healthy, gingivitis and periodontitis sites from CAD patients. *represents P < 0.001, compared with healthy group. Vertical bars denote 0.95 confidence intervals.Back to article page