Table 6. The mean difference in probing pocket depth in Group I and Group II between different intervals .

Time	Group	N	Mean change	Mean Difference	Z-value	P-value	Significance
Baseline to 6 weeks	I	20	1.60±0.82	-0.25±0.04	-0.817	0.478	Non-significant
	II	20	1.85±0.81
Baseline to 3 months	I	20	1.85±0.67	-0.35±0.03	-1.519	0.165	Non-significant
	II	20	2.20±0.77
6 weeks to 3 months	I	20	0.25±0.44	-0.10±0.02	-0.681	0.602	Non-significant
	II	20	0.35±0.49