Table 1.

Mechanical properties of NCHGs.

n = min. 9	Control (NCHG)		NCHG + CHX + Metr
	Mean	SD	Mean	SD
Young modulus (MPa)	2.3845	0.3594	0.2237	0.0757
Compressive stress (MPa)	0.2924	0.0178	0.1094	0.0340
Compressive load (N)	4.8806	0.1300	1.8458	0.6466
Compressive strain (mm/mm)	0.2224	0.0251	0.5800	0.0733