Table 4.

Comparison of reduction in plaque index among both the groups

Plaque index	Ionic toothbrush		Normal toothbrush		Mean difference	t test value	p value
	Mean	Std. deviation	Mean	Std. deviation
Baseline (1)	2.20	0.62	2.15	0.67	0.05	0.246	0.807
At 15 days (2)	1.05	0.22	1.40	0.50	−0.350	−2.845	0.007
At 30 days (3)	0.55	0.51	1.15	0.67	−0.600	−3.183	0.003
p value	<0.001			<0.001
Post hoc Bonferroni test	3 > 2 > 1			3 > 2 > 1