Table 8. The mean difference in clinical attachment level score 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	1.05±0.39	-0.15±0.02	-1.060	0.289	Non-significant
	II	20	1.20±0.52
Baseline to 3 months	I	20	1.20±0.52	-0.30±0.03	-1.544	0.123	Non-significant
	II	20	1.50±0.69
6 weeks to 3 months	I	20	0.15±0.37	-0.15±0.02	-1.122	0.262	Non-significant
	II	20	0.30±0.47