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Table 2 The mean, standard deviation values and results of one-way ANOVA and Tukey’s HSD test for comparison between surface microhardness, compressive strength, and dimensional changes of the groups

From: Reinforced dental plaster with low setting expansion and enhanced microhardness

MeanConventional dental plasterReinforced dental plasterImproved stoneP value
Surface microhardness (VHN)64.4 ± 3.8a124.3 ± 4.9b123.1 ± 4.4b≤ 0.001*
Compressive strength (MPa)7.8 ± 0.3a70 ± 2.1c37.4 ± 1.8b≤ 0.001*
Dimensional changes (mm)0.12 ± 0.01c0.06 ± 0.01a0.11 ± 0.01b≤ 0.01*
  1. Mean with different letters in the same row indicates statistically significance difference
  2. *Significant (p < 0.05)