Effect of different preventive agents on bracket shear bond strength: in vitro study

BMC Oral Health

Table 4 Frequency of distribution of Adhesive Remnant Index (ARI) ^* scores and chi-square comparison between the groups

Groups (16 teeth/group)		ARI scores no. (%)				P^	P^^
		0	1	2	3
Control group no treatment	Control	1 (6.3)	5 (31.3)	7 (43.8)	3 (18.8)	0.034
CPP–ACP groups	Group 1a	0 (0)	7 (43.8)	6 (37.5)	3 (18.8)		0.311
CPP–ACP groups	Before acid-etch	0 (0)	7 (43.8)	6 (37.5)	3 (18.8)
MI Paste	Group 1b	0 (0)	5 (31.3)	4 (25)	7 (43.8)
MI Paste	After acid-etch	0 (0)	5 (31.3)	4 (25)	7 (43.8)
CPP–ACPF groups	Group 2a	4 (25)	6 (37.5)	5 (31.3)	1 (6.3)		0.175
CPP–ACPF groups	Before acid-etch	4 (25)	6 (37.5)	5 (31.3)	1 (6.3)
MI paste plus	Group 2b	1 (6.3)	4 (25)	6 (37.5)	5 (31.3)
MI paste plus	After acid-etch	1 (6.3)	4 (25)	6 (37.5)	5 (31.3)
5% NaF groups	Group 3a	4 (25)	10 (62.5)	1 (6.3)	1 (6.3)		0.016
5% NaF groups	Before acid-etch	4 (25)	10 (62.5)	1 (6.3)	1 (6.3)
Fluoraphat varnish	Group 3b	0 (0)	6 (37.5)	6 (37.5)	4 (25)
	After acid-etch

^* ARI Scores = 0- no adhesive remaining on the enamel surface; 1- less than 50% adhesive remaining on tooth; 2- more than 50% adhesive remaining on tooth; and 3- all adhesive remaining on tooth surface.
^P = among all groups ^^P = within the same agent groups before and after acid-etch.

ISSN: 1472-6831