Effect of Enamel Caries Lesion Baseline Severity on Fluoride Dose-Response

Table 2

Least square means and results of the statistical analyses for and .

Lesion severity	Fluoride concentration
8 h	0 ppm	347	176
	83 ppm	347	178
	367 ppm	346	180
16 h	0 ppm	344	122	B
	83 ppm	346	123
	367 ppm	344	124
24 h	0 ppm	344	93	C
	83 ppm	349	95
	367 ppm	343	96
36 h	0 ppm	343	72	D
	83 ppm	345	73
	367 ppm	346	74
		4	3
Lesion		0.951	<0.001
Fluoride concentration		0.699	0.578
Lesion severity × fluoride concentration		0.988	1.000

significant differences between lesion severity groups are highlighted by different capital letters. The chosen four demineralization times led to four distinct extents of surface softening.
error of the least square mean (identical for each variable as two-way ANOVA will yield a pooled SEM); value presented only once per variable for better clarity.
values for each factor and interaction between factors.