Table 3 The mean time dependent ΔE00 values and standard deviations calculated by descriptive statistics of the specimens finished with different methods and stored in coffee

∆E₀₀

HT Control

HT Technical

HT Clinical

HT Glaze

 24 h

1,75 ± 0,24 ^{a, *}

2,20 ± 0,42 ^{b, *}

1,76 ± 0,48 ^{ac, *}

1,40 ± 0,47 ^{c, *}

 7 days

3,68 ± 0,51 ^a

3,18 ± 1,04 ^{ab, *}

2,82 ± 0,82 ^{b, *}

2,85 ± 0,67 ^bc

 28 days

4,08 ± 1,06 ^a

3,62 ± 1,20 ^{ab, *}

3,22 ± 0,61 ^{b, *}

2,97 ± 1,20 ^b

∆E₀₀

T Control

T Technical

T Clinical

T Glaze

 24 h

1,33 ± 0,55 ^{A, *}

2,45 ± 0,41 ^{B, *}

2,18 ± 0,44 ^B

1,44 ± 0,21 ^{A, *}

 7 days

5,09 ± 0,91 ^C

3,56 ± 0,55 ^B

2,73 ± 0,63 ^{A, *}

2,51 ± 0,59 ^A

 28 days

5,52 ± 1,52 ^C

3,17 ± 1,17 ^B

2,19 ± 0,52 ^A

2,49 ± 0,75 ^AB