Table 2.
Clinical periodontal parameters of IG (intervention) and NIG (no intervention) at baseline and second examination
| Baseline | 2nd exam | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| PD | CAL | SBI | PI | PD | CAL | SBI | PI | ||
| IG | n | 1697 | 1697 | 1697 | 1974 | 1151 | 1151 | 1151 | 1591 |
| mean | 2.10+ | 0.48• | 0.25# | 0.71@ | 2.28++ | 0.56• | 0.29## | 0.71@ | |
| s.d. | 0.02 | 0.02 | 0.01 | 0.01 | 0.02 | 0.02 | 0.01 | 0.01 | |
| NIG | n | 1741 | 1741 | 1741 | 2062 | 677 | 677 | 677 | 991 |
| mean | 2.15+ | 0.47• | 0.26# | 0.74@ | 2.53++ | 0.75•• | 0.40## | 0.78@ | |
| s.d. | 0.02 | 0.01 | 0.01 | 0.009 | 0.03 | 0.03 | 0.01 | 0.01 | |
| IG vs. NIG | p | 0.10* | 0.69* | 0.48** | 0.07** | <0.01* | <0.01* | <0.0001** | <0.055** |
*
Unpaired t test; significant if p<0.05.
**
Mann-Whitney; significant if p<0.05. PD- probing depth (in mm); CAL- clinical attachment level (in mm); SBI- sulcular bleeding index (absent= 0; present= 1); PI- plaque index; s.d.= standard deviation; n= number of sites. Equal symbols in rows means no significant differences before (baseline) and after treatment (2nd exam); duplicate symbols in rows means significant differences before (baseline) and after treatment (2nd exam), according to paired t test.