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

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

Treatment	Surface roughness Ra (μm, mean ± SD)		Vickers microhardness VHN (kg/mm^2, mean ± SD)
Treatment	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}

Lowercase letters represent statistically significant differences between the substances (line), before and after the use of the solution (paired t-test)
Uppercase letters represent no difference between the substances (column), (Independent t-test)

ISSN: 1472-6831