Table 4 Hardness (HV) at the baseline (30 min) and after aging (30 days) in alcohol and saliva. Different capital letters indicate statistically significant differences between baseline and after aging for storage mediums, separately. Different lower-case letters indicate statistically significant changes between materials initially and after the incubation period in different mediums.

Baseline

After aging

Baseline

After aging

Activa Bioactive Restorative

27.5 ± 2.12 ^{A, a}

9.7 ± 0.95 ^{B, a}

25.9 ± 1.20 ^{A, a}

22.6 ± 0.70 ^{B, a}

Beautifil Flow Plus F00

44.5 ± 2.01 ^{A, b}

34.0 ± 2.11 ^{B, b}

44.9 ± 1.66 ^{A, b}

42.2 ± 1.48 ^{A, b}

Beautifil Flow Plus F03

43.4 ± 1.96 ^{A, b}

34.6 ± 1.43 ^{B, b}

44.4 ± 2.72 ^{A, b}

42.1 ± 1.29 ^{A, b}

Predicta Bulk Bioactive

48.8 ± 2.15 ^{A, c}

34.1 ± 1.91 ^{B, b}

47.0 ± 0.82 ^{A, b, c}

47.0 ± 1.83 ^{A, c}

Filtek Supreme Flow

43.1 ± 1.52 ^{A, b}

35.7 ± 1.16 ^{B, b}

43.3 ± 1.95 ^{A, b, d}

47.3 ± 2.06 ^{B, c}