Table 4.

Comparison of the mean gingival index (GI) from T0 to T2 in control, placebo, and experimental groups (mean ± SD).

		T 0		T 1		T 2		P value†
		Mean	SD	Mean	SD	Mean	SD
Group	Control	1.01Aa	0.41	1.06Aa	0.39	1.03Aa	0.36	0.621
	Placebo	1.03Aa	0.41	0.99Aa	0.36	0.98ABa	0.37	0.709
	Experimental	1.00Aa	0.32	0.88Ab	0.21	0.77Bc	0.15	<0.001
P value‡		0.966		0.173		0.010

^†Repeated measures test followed by Bonferroni's test was used; ^‡one-way ANOVA test followed by Tukey's test was used. In each row, means with the same lower case superscript letter were not significantly different. In each column, means with the same capital superscript letter were not significantly different.