Objective: The purpose of the study is to present and discuss a workflow regarding computer-assisted surgical planning for bimaxillary surgery and intermediate splint fabrication.Methods: This study describes a protocol to replace not only the model surgery, but also facebow registration and transfer from facebow to articulator.Three different modalities were utilized to obtain this goal: cone beam computed tomography (CBCT), optical dental scanning, and three-dimensional printing.A universal registration block (Fig.1)was designed to register the optical scan of the wax bite to the CBCT data set (Fig.2).Integration of the wax bite avoided problems related to artifacts caused by dental fillings in the occlusal plane of the CBCT scan.A paired-pointbased registration algorithm is utilized to calculate the registration metric and to transfer the maxillary occlusal surface of the wax bite to the desired position (Fig.3).The intermediate splint is designed in the CAD tool and printed via 3D printer.Fifteen patients underwent bimaxillary orthognathic surgery.The printed intermediate splint was used during the operation for each patient (Fig.4).A post-operative CBCT scan was taken and registered to the pre-operative CBCT scan to evaluate the accuracy of the maxillary repositioning at the anterior of the maxilla.