Table 1.
Patients’ characteristics
| Parameters | Chronic periodontitis; ChP (n = 25) |
Aggressive periodontitis; AgP (n = 17) |
p |
|---|---|---|---|
| Female sex: [n]/frequency (%) | 10 (40%) | 8 (47%) | 0.650 |
| Age at re-examination (T2) [years]: mean ± SD | 58.2 ± 7.2 | 35.2 ± 6.6 | < 0.001 |
| Ethnicity: [n]/frequency (%) | 0.185 | ||
| African | 0 | 3 (18%) | 0.059 |
| Asian | 2 (8%) | 2 (12%) | 1.000 |
| European | 23 (92%) | 12 (70%) | 0.202 |
| Remaining teeth [n]: mean ± SD | |||
| Baseline | 26.2 ± 2.9 | 29.2 ± 2.5 | < 0.001 |
| 5 years after nonsurgical therapy | 25.2 ± 2.7 | 28.3 ± 2.5 | < 0.001 |
| Interleukin 1 haplotype [n]/frequency (%) | 5 (20%) | 5 (29%) | 0.714 |
| Interleukin 6 haplotype [n]/frequency (%) | 11 (44%) | 10 (58%) | 0.346 |
| Current smokers [n]/frequency (%) | |||
| Baseline | 7 (28%) | 4 (24%) | 0.746 |
| 5 years after nonsurgical therapy | 5 (20%) | 2 (12%) | 0.482 |
| Pack years: median (lower/upper quartile) | 1.4 (0/19.3) | 0 (0/1.2) | 0.060 |
| Body mass index [kg/m2]: mean ± SD | |||
| Baseline | 25.7 ± 4.0 | 25.8 ± 3.8 | 0.929 |
| 5 years after nonsurgical therapy | 25.9 ± 4.8 | 27.5 ± 5.8 | 0.343 |