Effect of remineralizing agents on bond strength of orthodontic brackets: an in vitro study

Progress in Orthodontics

Table 3 Descriptive statistics and results of LSD test for the six groups

Groups	Number	Shear bond strength				Multiple comparison (LSD test),pvalue
		Mean	S.D.	Min	Max	A1	B1	C1	A2	B2	C2
		(MPa)		(MPa)	(MPa)	A1	B1	C1	A2	B2	C2
A1	20	9.76	3.33	4.12	14.77	-	0.030*	0.388	0.035*	0.024*	0.738
B1	20	12.07	2.96	6.22	19.44		-	0.187	0.000*	0.000*	0.065
C1	20	10.67	4.60	5.76	20.23			-	0.003*	0.002*	0.596
A2	20	7.52	1.51	4.46	10.20				-	0.876	0.015*
B2	20	7.36	2.54	3.08	10.38					-	0.010*
C2	20	10.12	4.04	4.91	16.69						-

N, sample size; SD, standard deviation; Min, minimum; Max, maximum; A1, CPP-ACP bonded with light cure; B1, CPP-ACP-F bonded with light cure; C1, control bonded with light cure; A2, CPP-ACP bonded with chemical cure; B2, CPP-ACP-F bonded with chemical cure; C2, control bonded with chemical cure.
*p values <0.05 (significant).