Table 1 Demographic, clinical, and bacteriologic data of included subjects.
Healthy controls | Periodontitis patients | p | |
|---|---|---|---|
Age (years) | 17 (17–20.5)–19 | 55 (52–58)–55 | **** |
Gender, F/M | 9/2 | 4/7 | ns |
Current/past smokers (n) | 1/11 | 6/11 | ns |
Periodontitis stage | NA | 4 (3–4)–3.64 | **** |
Probing pocket depth (mm) | 2 (1–2)–1.6 | 7 (6–8)–6.91 | **** |
Clinical attachment loss (mm) | 0 | 3 (3–7)–4.64 | **** |
Bleeding on probing (%) | 0 | 100 | |
Amount of total bacteria (ng) | 6.93 (4.8–11.3)–7.7 | 11.98 (7.4–35.3)–20.22 | ns |
Amount of P. gingivalis (ng) | 0 (0–0)–0.3 | 3.3 (1.5–7.8)–4.16 | *** |
P. gingivalis / total bacteria ratio (ng) | 0 (0–0)–2.6 | 33 (14–54)–31.9 | *** |