Table 4. Mean changes in the probing depth, relative attachment level and intrabony defect depth reduction over a 9-month period in the groups .

Parameter	1.2% ATV	1.2% SMV	Placebo		P-value
Mean PD change				Placebo vs 1.2% ATV	<0.001*
	3.37 ± 1.32	3.10 ± 1.55	1.25 ± 1.24	Placebo vs 1.2% SMV	<0.001*
				1.2% ATV vs 1.2% SMV	0.620
Mean RAL change				Placebo vs 1.2% ATV	<0.001*
	3.46 ± 1.47	3.13 ± 1.56	1.30 ± 1.51	Placebo vs 1.2% SMV	<0.001*
				1.2% ATV vs 1.2% SMV	0.674
				Placebo vs 1.2% ATV	<0.001*
	1.69 ± 0.34	1.53 ± 0.41	0.12 ± 0.10	Placebo vs 1.2% SMV	<0.001*
Mean IBD change				1.2% ATV vs 1.2% SMV	0.153

^*Statistically significant at P<0.0