Evaluation of ortogonblender software bone movement tools in bimaxillary orthognatic surgeries performed in dolphin software

The aim of this observational, longitudinal and retrospective study was to evaluate the fidelity of virtual sur-gical planning (VSP) performed on Dolphin Imaging & Management Solutions (R) 11.95 software on hard tis-sues, using the tools of the open-source software OrtogOnBlender - Blender3D. For this, linear, angular and 7-point anatomical measurements of the skeletal profile were used, and the discrepancies between the VSP and the result after bimaxillary orthognathic surgery were calculated. Pre- and postoperative cone beam CT (CBCT) scans of 43 consecutive patients with class II and III skeletal deformities were evaluated and the results of the VSP were compared to the 1-month postoperative results. All overlapping points presented val-ues within the range considered clinically irrelevant (< 2 mm and < 4 degrees) and differences were not significant (p > 0.05). The comparison of anatomical points showed lower values (<= 2.11 mm) in point A of class II. For hard tissues, the comparison between VSP and 1-month postoperative tomography demonstrated the faithful results of virtual planning using this software. (C) 2021 Elsevier Masson SAS. All rights reserved.