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Table 2 Surface roughness (Ra) and Vickers microhardness (mean ± SD) of acrylic resin specimens at baseline and after the 14-day experiment

From: Cinnamaldehyde is a biologically active compound for the disinfection of removable denture: blinded randomized crossover clinical study

Treatment Surface roughness
Ra (μm, mean ± SD)
Vickers microhardness
VHN (kg/mm2, mean ± SD)
Baseline 14th day Baseline 14th day
Hypochlorite 0.047 ± 0.010 a A 0.059 ± 0.019 b A 20.80 ± 0.95 a A 20.08 ± 0.46 b A
Cinnamaldehyde 0.050 ± 0.015 a A 0.056 ± 0.014 b A 20.80 ± 0.95 a A 19.98 ± 0.48 b A
  1. Lowercase letters represent statistically significant differences between the substances (line), before and after the use of the solution (paired t-test)
  2. Uppercase letters represent no difference between the substances (column), (Independent t-test)