Table 1 Micro-CT results at 4 weeks after the implantation. The BMP-2 group showed significantly higher percent bone volume, trabecular number, trabecular thickness than the Implant group
Group (n) BV/TV BS/BV Tb.Pf Tb.Th Tb.N Tb.Sp
Average (std)
Implant group (30) 5.6 (1.4) 171.6 (21.0) 19.4 (7.4) 0.034 (0.007) 1.64 (0.27) 0.20 (0.04)
Hydrogel group (30) 6.7 (3.2) 167.2 (24.2) 19.4 (9.5) 0.035 (0.006) 1.89 (0.60) 0.18 (0.05)
BMP-2 group (30) 10.4 (5.3) 146.0 (32.6) 9.4 (13.5) 0.042 (0.009) 2.39 (0.85) 0.16 (0.04)
P value <0.0001 0.0006 0.0007 0.0002 <0.0001 0.002
P-value: Implant group and BMP-2 group
BV/TV Bone Volume/Trabecular Volume, percent bone volume
BS/BV Bone Surface/Bone Volume ratio, specific surface
Tb.Pf Trabecular Pattern factor
Tb.Th Trabecular Thickness
Tb.N Trabecular Number
Tb.Sp Trabecular Separation