Mineral loss (Vol. % × μm) in dentin treated with fluoride (n = 15). The mean mineral loss from dentin was significantly lower in the group treated with 5000 ppm fluoride compared to the 250 ppm fluoride group and the control group. Mineral loss was not statistically significantly different between the 250 ppm fluoride and control group. (**p < 0.01, ***p < 0.001).