Maryam Omidkhoda - Associate Professor, Dental Materials Research Center, Mashhad University of Medical Sciences, Mashhad, Iran Professor, Department of Orthodontics, School of Dentistry, Mashhad University of Medical Sciences, Mashhad, Iran
Farzin Heravi - Professor, Department of Orthodontics, School of Dentistry, Mashhad University of Medical Sciences, Mashhad, Iran
Fatemeh Shahrestani - Dentist, Private Office, Mashhad, Iran
Mohamad Noori - Assistant Professor, Department of Orthodontics, School of Dentistry, Lorestan University of Medical Sciences, Khorramabad, Iran

Aim: The purpose of the present study was to evaluate the accuracy of Dolphin Imaging version ۱۱.۸ software, in predicting soft and hard tissue changes after orthognathic jaw surgery.Methods: In this retrospective study, pre- and postoperative cephalograms and photographs of ۲۰ patients were scanned and inserted into Dolphin Imaging version ۱۱.۸ software and traced by the software. Cephalometric superimposition was performed before and after the operation to determine the extent of changes in each jaw. The software then simulated postoperative images according to the calculated changes for each patient.Results: The results of this study showed that the upper lip had the highest accuracy in both sagittal and vertical axes. The highest reliability was in the upper lip with ۸۰% error in the sagittal axis and the tip of the nose with ۸۰% error in the vertical axis. The lowest accuracy in our study was related to soft tissue Menton which had the least reliability with an error frequency of ۳۵% and ۴۵% in the sagittal and vertical axis, respectively.Conclusion: Based on the method used and the findings obtained by digital measurements, it can be concluded that the Dolphin Imaging version ۱۱.۸ software can be used to reliably predict hard tissue as well as soft tissue, especially in the upper lip area.

Keywords: Dolphin Software, Orthognathic Surgery, Soft tissue, prediction