Fig. 7From: A comparison of bone conductivity on titanium screws inserted into the vertebra using different surface processingResults of histological examination (bone formation index). At 4 and 8 weeks after screw insertion, bone formation index of the AO-Ti and I-Ti groups was significantly higher than that of the Ti group (p < 0.05). There was no significant difference found between the AO-Ti and I-Ti groupsBack to article page