Table 1. Characteristics of the subjects included in this study.
| Characteristics | Total (n=84) | Periodontal disease | |||
|---|---|---|---|---|---|
| Mild (n=28) | Moderate (n=40) | Severe (n=16) | |||
| Gender | |||||
| Male | 68 (81) | 21 (75) | 33 (83) | 14 (88) | |
| Female | 16 (19) | 7 (25) | 7 (17) | 2 (12) | |
| Age (yr) | 37.8 (11.1) | 31.0 (1.2) | 38.9 (1.7) | 47.5 (2.8) | |
| BMI (kg/m2) | 24.0 (3.1) | 23.5 (0.5) | 24.0 (0.5) | 24.8 (0.7) | |
| Smoking | |||||
| Never | 53 (63) | 19 (68) | 23 (58) | 11 (69) | |
| Ever | 15 (18) | 4 (14) | 9 (22) | 2 (13) | |
| Current | 16 (19) | 5 (18) | 8 (20) | 3 (18) | |
| Brushing (times per day) | 2.7 (0.6) | 2.8 (0.1) | 2.6 (0.11) | 2.6 (0.1) | |
| BOP (%) | 8.1 (6.0) | 5.1 (0.7) | 9.3 (0.9) | 10.5 (2.0) | |
| PI (%) | 16.7 (12.3) | 11.4 (1.8) | 18.3 (2.0) | 22.1 (3.3) | |
| P. gingivalis DNA detection | 35 (41) | 6 (21) | 15 (38) | 14 (88) | |
| PISA (mm2) | 239.7 (234.9) | 116.0 (15.9) | 259.7 (29.9) | 406.7 (93.7) | |
| Serum P. gingivalis antibody level | 5,023.9 (6,397.9) | 3,384.4 (677.0) | 3,655.4 (685.0) | 11,314.3 (2,529.5) | |
Values are presented as mean (standard deviation).
BMI: body mass index, BOP: bleeding on probing, PI: plaque index, PISA: periodontal inflamed surface area, P. gingivalis: Porphyromonas gingivalis.