Objectives: To compare the accuracy of Dolphin Imaging version 10 and Vistadent OC in simulating the actual outcome of mandibular advancement surgery.
Methods: The data was obtained from the records of 9 patients who underwent orthodontic treatment and bilateral sagittal split osteotomy and advancement of mandible with rigid fixation at Ragas Dental College, Chennai, India. The pretreatment, presurgical and posttreatment cephalograms were traced and digitized.A composite analysis including linear and angular measurements was done. Dental and surgical movements were measured for the amount of tooth movement for pre surgical decompensation and skeletal movement from surgery. These measurements were applied to the respective structures in Dolphin Imaging and Visadent OC programs. None of the artistic tools were used to refine the images. Default hard tissue to soft tissue ratios were used.The differences between the predicted results from the 2 programs and the actual treatment outcome were compared in stage1- evaluation of predicted images was done using a visual analog scale. The predicted images were assessed by 3 panelists, orthodontists, oral surgeons and lay persons. In stage 2 the soft tissue measurements of the predicted images were compared to that of the actual treatment outcome.
Results: 1.Both Dolphin Imaging and Vistadent OC were reasonably accurate in predicting the outcome of mandibular advancement surgery.2. The lower lip was the least predictable in both the softwares.3.The submental region scored the highest accuracy.
Conclusion: Vistadent OC predictions scored marginally higher for the overall assessment of the predicted image over Dophin version 10.