Fig. 3

CBCT imaging observation and measurement for the three groups preoperatively and 8 months postoperatively. a Preoperative image for CGFs/DBBM group; b 8 months postoperatively in CGFs/DBBM group; c preoperative image for DBBM group; d 8 months postoperatively in DBBM group; e preoperative image for control group; f 8 months postoperatively in control group;