Effects of six different preventive treatments on the shear bond strength of orthodontic brackets: in vitro study

Figures & data

Figure 1. Average SBS of brackets compared by the different agents used. A–G = groups 1–7.

Table 1. Results from one-way ANOVA test (p < 0.001) and between the effects of all the preventive agents used on SBS (Student–Newman–Keuls test, p < 0.05).

Factor	n	Mean (MPa)	SD	Different from factor no.*
(1) Control	18	17.38	5.38	(2)(5)(6)
(2) Fluoride	18	6.62	5.71	(1)(3)(4)(5)(6)(7)
(3) CPP–ACP	18	14.87	4.07	(2)(5)(6)
(4) Ozone	18	17.10	5.61	(2)(5)(6)
(5) Glycine	18	11.02	4.74	(1)(2)(3)(4)(7)
(6) Hydroxyapatite	18	10.86	4.09	(1)(2)(3)(4)(7)
(7) Biorepair	18	16.01	4.11	(2)(5)(6)

Continuous variables are reported as means ± standard deviation.

*p < 0.05.

Table 2. Frequency of distribution of ARI score and chi-square comparison between each single group and the control one.

	ARI scores
	0	1	2	3	p Values*
Control	1	11	4	2
Fluoride varnish	16	2	0	0	<0.0001
CPP–ACP	4	12	2	0	0.2114
Ozone	4	12	2	0	0.2114
Glycine	12	4	2	0	0.0311
Hydroxyapatite	9	6	2	1	0.0311
Biorepair	4	12	1	1	0.2640

*p<0.05.