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

Table 3

Median pre- and posttreatment visual examination scores in each group (used products), interquartile ranges, and significance levels.

Treatment regime	Control	FT	NFT	FV+FT	CPP-ACP+FT	MMG+NFT
Pretreatment median (interquartile range)	1 (1-2)	1 (1-2)	1 (1-2)	1 (1-2)	1 (1-2)	1 (1-2)
Posttreatment median (interquartile range)	3 (2-3)	2 (2-3)	2 (2-3)	2 (2-3)	1 (1-2)	2 (1-2)
Sample size ()	15	15	15	15	15	15
Significance level ()	<0.001	<0.001	<0.001	<0.001	0.157	<0.001