Research Article

In Vitro Comparison of Fluoride, Magnesium, and Calcium Phosphate Materials on Prevention of White Spot Lesions around Orthodontic Brackets

Figure 4

Ca loss measurement (; ) plots of treatment groups for (a) day 5, (b) day 10, (c) day 15, and (d) day 19. Different letters are used in pairwise comparisons of groups.
(a) A-C, D-B, and C-B are not statistically significant ()
(b) A-B, C-D, D-F, D-B, and C-B are not statistically significant ()
(c) D-F, D-B, C-B, C-D, A-D, and A-C are not statistically significant ()
(d) D-B, C-B, A-B, C-D, A-D, and A-C are not statistically significant ()