Table 2. Periodontal clinical indices parameters of the patients.
| Parameter | SRP+placebo |
SRP+SDD |
||||
|---|---|---|---|---|---|---|
| Baseline mean±SD | 3 month mean±SD | P | Baseline mean±SD | 3 month mean±SD | P | |
| PD (mm) | 6.18±0.22 | 3.42±0.37 | 9.06E-13 | 5.90±0.16 | 3.25±0.42 | 8.26E-12 |
| BOP (%) | 66.00±2.50 | 44.60±3.10 | 5.41E-07 | 65.4±1.02 | 23.70±1.12 | 6.24E-10 |
| CAL (mm) | 5.69±0.50 | 4.1±0.81 | 0.001 | 5.80±1.50 | 3.90±1.20 | 1.93E-06 |
PD=probing depths; BOP=bleeding on probing; CAL=clinical attachment level; SRP=scaling and root planning; SDD=subantimicrobial-dose doxycycline; P=statistical significance baseline compared with 3 months.