Objective: Precise model surgery for three-dimensional repositioning of the maxilla and mandible is complex, lengthy, and tedious. One of the many present problems associated with the delivery of orthognathic surgery treatment, relates to excessive time spent with planning for and executing three-dimensional model surgery. The aim of this case report was to emphasize the superiorities of three dimensional virtual model surgery of a patient with skeletal class III deformity who was scheduled to undergo CMF surgery
Material and Method: A multi-slice computed tomography (CT) scan of the maxillofacial region is acquired so that both bony structures and teeth can be viewed in 3 dimensions. At the same time, the patient’s plaster models are laser-scanned. Then the crowns are eliminated from the CT scan and they are merged with the separated crowns acquired from the models. The second step was to quantify the deformity. The anteroposterior, vertical, and transverse positions of the maxilla and mandibula were measured. The third step was to simulate the entire surgical procedure in the computer. If simulated outcomes were not satisfactory, the surgical plan could be modified, and simulation could begin again.
Results: 3D virtual model surgery and 3D soft tissue simulation have been planned practically by using computer
Conclusion: Traditional plaster dental model surgery will be replaced by computer-assisted surgical planning.