Contribution of Orthopilot® navigation system to orthognathic surgery

Computer-assisted surgery is increasingly widespread in our everyday practice. We routinely use the Orthopilot Navigation System (ONS) during our orthognathic surgeries. The aim of our work, through three international publications, was to explore the different interests of this tool. In a first part, we demonstrated the pedagogical interest of the ONS in the learning of condylar repositioning during mandibular osteotomies. The use of ONS allowed trainees to improve their accuracy and surgical skills. In a second part, we measured, thanks to the navigation, the inaccuracy of planning transfer of Le Fort I osteotomies with traditional occlusal splints. We showed that the transfer was more inaccurate in the sagittal plane. This inaccuracy was also more important in larger maxillary movements. Finally, during the last part of this work, we demonstrated that the ONS, used semi-actively, could improve the accuracy of the maxilla repositioning during these same osteotomies. This work demonstrated many benefits of the ONS but also some of these current limitations. With the technological evolutions, it is quite possible to improve it by integrating 3D planning data and by optimizing the ergonomics, notably through the virtual reality.