Table 2.
Mean PD and CAL for sites treated with SRP or SRP plus EGCG
| Clinical parameter | Mean ± SD | Within-group comparison | |||
|---|---|---|---|---|---|
| Baseline | Month 3 | Month 6 | |||
| PD (mm) | SRP + EGCG | 5.33 ± 1.38 | 3.44 ± 1.29 | 3.37 ± 1.36 |
0 versus 3: p < 0.001* 0 versus 6: p < 0.001* 3 versus 6: p = 0.019* |
| SRP | 5.28 ± 1.33 | 3.47 ± 1.3 | 3.66 ± 1.43 |
0 versus 3: p < 0.001* 0 versus 6: p < 0.001* 3 versus 6: p = 0.001* |
|
| Between-group comparison | p = 0.656 | p = 0.696 | p = 0.004* | ||
| CAL (mm) | SRP + EGCG | 3.83 ± 2.18 | 2.62 ± 2.16 | 2.42 ± 2.11 |
0 versus 3: p < 0.001* 0 versus 6: p < 0.001* 3 versus 6: p = 0.005* |
| SRP | 3.75 ± 2.11 | 2.62 ± 2.18 | 2.65 ± 2.09 |
0 versus 3: p < 0.001* 0 versus 6: p < 0.001* 3 versus 6: p = 0.674 |
|
| Between-group comparison | p = 0.611 | p = 0.985 | p = 0.139 | ||
The comparison between groups at each interval was performed with Student’s t test (*p < 0.05)
The comparison within each group was performed with the Bonferroni method (*p < 0.05); 0, baseline; 3, month 3; 6, month 6