Table 3. Study parameter for Gingival Index (GI).

	Baseline	1 Month Later	3 Month Later
Groups	0	1	2	3	0	1	2	3	0	1	2	3	P value*
Laser	0	3	18	19	14	11	5	0	19	10	1	0	< 0.000
Halita	0	2	20	8	9	16	5	0	10	16	4	0	< 0.000
P value**	0.762	0.366	0.04

* P values in the columns represents significance between laser and Halita groups (P < 0.05).

** P value in the rows represents significance between measurements on time periods in laser and Halita groups separately (P < 0.05).