Figure 9: AR technique applied during surgery.

(A) The integrated image combined a virtual mandible and the patient to provide a “see-through” experience for surgeons. (B) After the mandible was exposed, the virtual image of the mandible was completely overlaid with the real bone in 3D. (C) The surgery was conducted according to the osteotomy lines projected by the AR system. (D) Internal rigid fixation with L-shaped plates and screws was used to fix the three parts of the mandible.