Table 2.

Fluoride ion release (ppm/mg) from fissure sealants into deionized water. Descriptive data are presented as mean values + standard deviation (SD).

Time	Arkona (ppm/mg)	Helioseal (ppm/mg)	Conseal (ppm/mg)	Helioseal Plus (ppm/mg)
1 h	0.0005 ± 0.0002	0.0005 ± 0.0001	0.0041 ± 0.0014	0.0012 ± 0.0002
3 h	0.0006 ± 0.0002	0.0007 ± 0.0004	0.0019 ± 0.0007	0.0016 ± 0.0009
24 h	0.0007 ± 0.0001	0.0008 ± 0.0004	0.0017 ± 0.0002	0.0015 ± 0.0005
48 h	0.0013 ± 0.0004	0.0006 ± 0.0002	0.0016 ± 0.0003	0.0015 ± 0.0005
72 h	0.0009 ± 0.0002	0.0007 ± 0.0002	0.0012 ± 0.0003	0.0005 ± 0.0001
96 h	0.0005 ± 0.0001	0.0005 ± 0.0001	0.0007 ± 0.0002	0.0004 ± 0.0001
1 week	0.0007 ± 0.0002	0.0007 ± 0.0001	0.0009 ± 0.0001	0.0007 ± 0.0001
2 weeks	0.0010 ± 0.0005	0.0010 ± 0.0003	0.0012 ± 0.0005	0.0013 ± 0.0004
Mean value ± SD	0.0008 ± 0.0004	0.0007 ± 0.0003	0.0017 ± 0.0012	0.0011 ± 0.0006
p-value (ANOVA for dependent samples)	0.0004 *	0.143	<0.0001 *	0.0001 *
p-value (ANOVA for independent groups)	<0.0001 *
Tukey’s post-hoc test:
Arkona	-
Helioseal	0.936	-
Conseal	<0.0001 *	<0.0001 *	-
Helioseal Plus	0.190	0.049 *	0.0009 *	-

* statistically significant.