Three-dimensional CT image analysis of the repaired orbital bone defects in the various group at 12 and 24 weeks. (A1-2) In the BMSC-BM/β-TCP group, the graft gradually absorbed and accompanied with new bone formation that is identical to normal orbits. (B1-2) In the BM/β-TCP group, the graft absorbed with less bone regeneration. (C1-2) In the β-TCP group, the scaffold remained original shape. (D1-2) No obvious new bone formation in the blank group.