Table 1 The clinical data (Mean ± SD) of control subjects and periodontitis patients
Parameters | Control subjects (N = 850) | Periodontitis patients (N = 440) |
|---|---|---|
Age (years) | 42.9 ± 9.7 | 49.3 ± 13.6 |
Age range (years) | 26 - 60 | 28 - 65 |
Male / female | 544 / 306 | 260 / 180 |
PD (mm) | 2.7 ± 1.2 | 6.1 ± 2.7* |
Sites% with BOP | 40.3 ± 9.5 | 78.2 ± 19.8* |
Sites% with gingival recession | 1 ± 1.2 | 38.9 ± 25.9* |
Sites% with calculus | 34.1 ± 13.6 | 63.0 ± 25.8 |
CAL (mm) | 0.0 | 6.2 ± 2.9 |