Table 4.

Mean ± standard deviation of erosive tooth loss analyzed by 3D confocal microscopy, according to condition and treatment groups (n = 8).

Groups	Cross-sectional loss area (µm2)	Volume of tissue loss (µm3)
(1) TiF4 + Water	0.035 ± 0.01aA	0.067 ± 0.01aA
(2) TiF4 + Soft drink	0.036 ± 0.01aA	0.075 ± 0.02aA
(3) NaF + Water	0.040 ± 0.01aA	0.072 ± 0.01aB
(4) NaF + Soft drink	0.044 ± 0.01aB	0.077 ± 0.01aA
(5) Placebo + Water	0.041 ± 0.01aA	0.080 ± 0.01aC
(6) Placebo + Soft drink	0.063 ± 0.01bC	0.111 ± 0.01bB

* Different lowercase letters indicate significant differences between soft drink and water (“conditions”) for each treatment. Different capital letters indicate significant differences between treatments (TiF₄, NaF and placebo) for each condition (two-way ANOVA and Tukey’s test, p < 0.0001 for conditions, treatments and interaction for cross-sectional area; two-way ANOVA and Tukey’s test, p = 0.004, p < 0.0001 and p = 0.008 for conditions, treatments and interaction between factors for volume analysis, n = 8).