Do Different Tooth Bleaching–Remineralizing Regimens Affect the Bleaching Effectiveness and Enamel Microhardness In Vitro?

Table 2

Means, standard deviations (SD), minimum and maximum values of color variables (ΔL, Δa, Δb) among the experimental groups.

Study groups	Mean ΔL ± SD	Mean Δa ± SD	Mean Δb ± SD
B	8.90 ±	−2.15 ± 0.71^ac	−2.80 ± 0.66^a
FHA/B	7.56 ± 2.45^a	−0.71 ± 0.47^b	−1.60 ± 1.46^ab
FHA + B	4.42 ± 1.42^b	−1.50 ± 0.75^a	−1.27 ± 0.51^b
B/FHA	6.23 ± 1.8^ab	−1.73 ± 0.55^a	−2.82 ± 0.80^a
NaF/B	7.55 ± 2.69^a	−1.56 ± 0.75^a	−2.90 ± 0.89^a
NaF + B	7.65 ± 2.73^a	−2.58 ± 0.69^c	−4.21 ± 0.79^c
B/NaF	9.50 ± 3.46^a	−1.76 ± 0.73^ac	−2.88 ± 0.93^a
One-way analysis of variance (ANOVA)	F = 21.43,	F = 24.53,	F = 29.92,

Mean values with the same superscript letters are not statistically significant at .