Table 1.

Roughness and modulus data of HDRM after immersion in carbonated soft drink for 0, 6, 12, and 24 h.

Time (h)	Roughness Ra (nm)	Young's modulus (GPa)
0	302.02 ± 30.20aa	9.29 ± 7.01a
6	294.52 ± 14.84ab	2.32 ± 1.61a
12	321.54 ± 37.38abab	1.60 ± 1.42a
24	430.59 ± 15.07abab	0.53 ± 0.26a

All data are mean ± standard error of mean (n = 3); same letters indicate data that do not differ at significance level p < 0.05.