Table 3.

ROI parameters of the expandable portion of EPSs and the anterior portion of SINO crews (mean ± SD)

Parameters	EPS	SINO
TMD (mg cc−1)	480 ± 70*	390 ± 30
BVF (%)	56 ± 8*	36 ± 7
Tb.Th (mm)	0.36 ± 0.12*	0.23 ± 0.04
BS/BV (mm−1)	6.1 ± 1.8*	9.0 ± 1.5
Tb.Sp (mm)	0.25 ± 0.06*	0.43 ± 0.11
Tb.N (mm−1)	1.57 ± 0.24	1.7 ± 0.5
SMI (%)	2.1 ± 0.7	2.5 ± 0.7

TMD tissue mineral density, BVF bone volume fraction, Tb.Th trabecular thickness, BS/BV bone surface/bone volume ratio, Tb.Sp trabecular separation, Tb.N trabecular number, SMI structure model index

* P < 0.05 compared with the SINO group