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. 2020 Nov 6;61(Suppl 3):55–59. doi: 10.1111/j.1875-595X.2011.00050.x

Table 2.

ΔZ values calculated from cross-sectional microhardness data (n = 20). The letter superscripts represent the different statistical groupings

Treatment Toothpaste	ΔZ (vol% x μm)
10 ppm F (placebo)	2114 (187)^a
675 ppm F (Dose Response)	1206 (132)^b
1,450 ppm F (NaF Control)	303 (89)^c
0.1%w/w o-cymen-5-ol, 0.6%w/w ZnCl_2, 1,450 ppm F (ET1)	19 (73)^c
0.1%w/w o-cymen-5-ol, 0.6%w/w ZnCl_2, 1,450 ppm F (ET2)	−10 (55)^c

Note: Standard error in brackets