Table 3

	Probing pocket depth (Mean ± SEM [mm])
PPD category/patient groups	Baseline	3 months	6 months
Shallow (≤ 4 mm)
Control^c	2.90 ± 0.10	2.50 ± 0.08^a	2.57 ± 0.14^a
Experimental	2.76 ± 0.09	2.51± 0.06^a	2.63 ± 0.07^b
Moderate (> 4 to ≤ 6 mm)
Control	5.39 ± 0.05	3.84 ± 0.11^a	3.86 ± 0.20^a
Experimental	5.33 ± 0.04	4.11 ± 0.10^a	4.11 ± 0.14^a
Deep (> 6 mm)
Control	7.88 ± 0.23	5.17 ± 0.20^a	4.74 ± 0.31^a
Experimental	7.77 ± 0.15	5.94 ± 0.20^a	5.61 ± 0.14^a,b
Overall
Control	3.91 ± 0.21	3.03 ± 0.13^a	3.03 ± 0.19^a
Experimental	4.09 ± 0.19	3.15 ± 0.11^a	3.17 ± 0.12^a

^aStatistically significant difference from baseline (Wilcoxon Signed Ranks test, P < 0.05).
^bStatistically significant difference from 3 months (Wilcoxon Signed Ranks test, P < 0.05).
^cNo statistically significant differences were observed between groups (Mann-Whitney test, P > 0.05).