Table 3. Periodontal status and mean P. gingivalis counts in the study groups.
| Variables | Controls | PKD | p |
|---|---|---|---|
| (n=86) | (n=86) | ||
| Number of teeth† | 22.8 ± 2.7 | 18.2±4.9 | <0.001 |
| PI† | 35.7± 10.9 | 56.7±12.2 | <0.001 |
| BOP† | 33.1±14.9 | 46.4±17.2 | <0.001 |
| Number of sites with PD* | 7.843 | 6.26 | |
| ≤ 3mm | 4.800 (61.2%) | 3.142 (50.2%) | |
| 4–6 mm | 2.847 (36.3%) | 2.767 (44.2%) | <0.001 |
| > 6mm | 196 (2.5%) | 351 (5.6%) | |
| Mean PD (mm)† | 1.8±0.75 | 3.5±0.67 | <0.001 |
| Number of sites with CAL* | 7.71 | 6.194 | |
| ≤ 3 mm | 3.230 (41.9%) | 2.273(36.7%) | |
| 4–5 mm | 4.079 (52.9%) | 3.444 (55.6%) | 0.012 |
| > 5mm | 401 (5.2%) | 477 (7.7%) | |
| Mean CAL (mm)† | 2.7±0.7 | 3.8±1.3 | <0.001 |
| N=43 | N=43 | ||
| Mean P. gingivalis counts (mean log10 ± s.d.)† | 3.9±1.9 | 5.3±2.5 | 0.012 |
| Periodontitis† | |||
| Yes | |||
| No | |||
| 2.5±1.3 | 3.9±1.7 | <0.001 | |
| 1.4±0.6 | 2.4±0.8 | <0.001 |
Parkinson's disease and Porphyromonas gingivalis levels: a case-control study