Table 4.

Intragroup and intergroup comparisons of mean plaque index and gingival index scores in control and experimental group (N = 202)

	Experimental group (mean ± SD)	Control group (mean ± SD)	T value	P# value
Mean plaque index scores
Baseline	2.15 ± 0.52	2.19 ± 0.41	0.493	0.622
3 months	1.44 ± 0.46	2.23 ± 0.49	11.687	0.001
6 months	0.91 ± 0.40	2.09 ± 0.53	17.558	0.001
F value	275.518	3.732
P∆ value	0.001	0.026
% change	57.67	4.56
Mean gingival index scores
Baseline	1.32 ± 0.25	1.36 ± 0.21	1.192	0.235
3 months	0.86 ± 0.30	1.30 ± 0.26	11.123	0.001
6 months	0.78 ± 0.31	1.35 ± 0.22	14.793	0.001
F value	190.801	2.948
P∆ value	0.001	0.05
% change	40.90	0.7

^#Independent t test

^∆Repeated ANOVA