Table5. Pairwise comparisons of cell viability in the six groups at 72 hours .

(I) Group	(J) Group	Mean difference	P value		95% CI
			Lower bound	Upper bound
OM(Control) (1)	VD(2)	3.00	0.4	1.85-	7.87
OM(Control) (1)	660nm, 10s(3)	0.10-	1.00	4.71-	4.51
OM(Control) (1)	VD+ 660nm, 10s(4)	4.54	0.05	0.07-	9.15
OM(Control) (1)	660nm, 17s(5)	11.99	0.000	7.38	16.60
OM(Control) (1)	VD+ 660nm, 17s(6)	14.21	0.000	9.60	18.81
VD(2)	660nm, 10s(3)	2.90	0.3	1.70-	7.51
VD(2)	VD+ 660nm, 10s(4)	1.53	0.9	3.08-	6.14
VD(2)	660nm, 17s(5)	8.98	0.000	4.37	13.59
VD(2)	VD+ 660nm, 17s(6)	11.19	0.000	6.59	15.81
660nm, 10s(3)	VD+ 660nm, 10s(4)	4.44	0.04	0.09	8.78
660nm, 10s(3)	660nm, 17s(5)	11.88	0.000	7.54	16.23
660nm, 10s(3)	VD+ 660nm, 17s(6)	14.10	0.000	9.76	18.45
VD+ 660nm, 10s(4)	660nm, 17s(5)	7.45	0.000	3.100	11.79
VD+ 660nm, 10s(4)	VD+ 660nm, 17s(6)	9.67	0.000	5.32	14.01
660nm, 17s(5)	VD+ 660nm, 17s(6)	2.21	0.6	2.13-	6.56

OM: Osteogenic medium; VD: Vitamin D