Table 1: Mean and mean differences in probing pocket depth, clinical attachment level and gingival recession of groups I and II at different intervals

				Probing pocket depth								Clinical attachment level								Gingival recession
		Assessment interval		Mean± SD		Mean difference from baseline		z value		p-value		Mean ± SD		Mean difference from baseline		z value		p-value		Mean± SD		Mean difference from baseline		z value		p-value
Group I		Baseline		6.45 ±1.44		-		-		-		11.27 ± 1.27		-		-		-		5.73 ±1.19		-		-		-
		3 month		3.82 ± 0.87		2.63 ± 0.67		2.99		0.003		8.81 ±1.25		2.45 ± 0.82		2.98		0.003		5.90 ±1.45		0.18 ±0.40		1.41		0.16
		6 month		2.55 ± 0.52		3.90 ±1.22		2.99		0.003		7.55 ±1.44		3.73 ±1.35		2.99		0.003		5.91 ±1.45		0.18 ±0.40		1.41		0.16
Group II		Baseline		7.27 ± 2.37		-		-		-		11.55 ±3.24		-		-		-		5.55 ± 0.93		-		-		-
		3 month		4.18 ±1.25		3.09 ±1.22		2.97		0.003		9.09 ±2.66		2.45 ±1.03		2.96		0.003		6.18 ±1.33		0.64 ± 0.67		2.33		0.02
		6 month		2.64 ± 0.67		4.64 ±1.80		2.97		0.003		7.55 ±2.38		4.00 ±1.48		2.95		0.003		6.27 ±1.42		0.73 ± 0.79		2.27		0.02