Table 2.

Paired t test for gingival bleeding index (A), modified gingival index (B) and for plaque index (C).

Group	Mean ± S.D. Scores	“t” Value	At 0.05 level	At 0.01 level
(A)
Cetylpyridinium	−0.15 ± 0.088721	6.5502	S∗	S∗
Toothpaste/toothbrush	−0.05533 ± 0.194784	1.0994	NS	NS
Control	0.028 ± 0.046935	2.3141	NS	NS
(B)
Cetylpyridinium	−0.25867 ± 0.152262	1.4832	NS	NS
Toothpaste/toothbrush	0.141333 ± 0.333785	1.6396	NS	NS
Control	0.028667 ± 0.070495	1.5751	NS	NS
(C)
Cetylpyridinium	−0.25867 ± 0.152262	1.4832	NS	NS
Toothpaste/toothbrush	0.141333 ± 0.333785	1.6396	NS	NS
Control	0.028667 ± 0.070495	1.5751	NS	NS