Table 2.

Plaque index of four groups at two different periods (baseline and after 2 months) and comparison (P value) of difference in mean plaque index

Groups	Baseline	2 months	Comparison
A	0.83±0.11	0.40±0.09	<0.001
B	0.90±0.12	0.30±0.09	<0.001
C	0.87±0.10	0.43±0.10	<0.001
D	0.90±0.09	0.37±0.09	<0.001

Newman-Keuls test showed significant (P<0.001) decrease in mean PI at 2 months. PI – Plaque index; P<0.001= Highly Statistically Significant