Table 1. Demographic and clinical characteristics of the subjects.
| Parameter | Healthy subjects | Periodontitis patients | p-value |
| No. of subjects | 12 | 11 | |
| Age (years) | 34.6±7.1 | 34.9±12.5 | NSa |
| Missing teeth | None | None | — |
| Smoker | None | None | — |
| Women (%) | 50 | 54.5 | NSb |
| Percentage of sites with a PD (%): | |||
| >6 mm | 0 | 27.3 | |
| 4–6 mm | 0 | 54.5 | |
| <4 mm | 100 | 18.2 | |
| OD630 of plaque suspension | 0.04±0.028 | 0.08±0.03 | 0.003a |
a
Independent t-tests
b
Chi-square tests
NS: not significant
PD: pocket depth
Quantitative data are presented as the mean±standard deviation (SD); categorical data are presented as percentages.