Table 2 Results of the delta gray values of the in situ part after de- and remineralization (AU: arbitrary units, SD: standard deviation). Rel.ΔZ is calculated separately for each sample, i.e., the mean value shown does not result from the respective mean ΔZ of demin and remin.

From: A comparison between in vitro and randomized in situ models for remineralization of artificial enamel lesions

In situ

N sample

A (ΔZ) Demin [AU]

[mean ± SD]

A (ΔZ) Remin [AU]

[mean ± SD]

rel.ΔZ [%]

[mean ± SD]

A (test group), 10 days

4

− 32.0 ± 6.4

− 27.4 ± 0.9

11.5 ± 18.8a,c

A (test group), 21 days

7

− 25.8 ± 9.4

− 14.0 ± 6.4

46.1 ± 13.6a,b

B (placebo group), 10 days

3

− 28.5 ± 9.0

− 20.8 ± 6.2

25.2 ± 16.9c

B (placebo group), 21 days

6

− 30.6 ± 9.1

− 26.4 ± 7.4

11.0 ± 30.2b

  1. Different superscript letters indicate different p-values: a: p = 0.022; b: p = 0.034; c: p = 0.40.
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