Do Different Tooth Bleaching–Remineralizing Regimens Affect the Bleaching Effectiveness and Enamel Microhardness In Vitro?
Table 3
The means and standard deviations of microhardness values among the experimental groups at three different depths of measurements.
Study groups
D1 (20–30 µm)
D2 (50–60 µm)
D3 (120–100 µm)
Repeated measurement analysis
NC
327.4 ± 52.0aA
336.7 ± 49.4aB
399.7 ± 44.1aC
F = 60.8,
B
174.3 ± 35.9bA
273.8 ± 24.0bB
336.5 ± 13.9bcC
F = 175.34,
FHA/B
230.9 ± 11.8cA
284.0 ± 15.4bB
324.9 ± 20.9cC
F = 226.97,
FHA + B
256.5 ± 18.3dA
329.1 ± 15.4aB
356.4 ± 20.0abC
F = 148.06,
B/FHA
253.7 ± 17.2dA
338.2 ± 24.0aB
359.0 ± 14.7aC
F = 161.52,
NaF/B
268.4 ± 33.6dA
342.5 ± 30.1aB
362.0 ± 30.3abC
F = 210.57,
NaF + B
271.7 ± 48.8acdA
345.4 ± 39.1aB
364.6 ± 34.4abC
F = 156.14,
B/NaF
283.4 ± 41.1adA
348.1 ± 22.8aB
362.8 ± 16.9aC
F = 87.83,
One-way analysis of variance
F = 20.17,
F = 15.65,
F = 9.02,
Interaction F = 11.55,
The different lowercase superscript letters in the columns indicate statistically significant differences at . The different uppercase superscript letters in the rows indicate statistically significant differences at .