In recent past, 3D methodologies have been introduced in medicine to enhance the standard diagnostic technologies. Particularly, it was gave a great importance to 3D prediction in support to maxillo-facial surgical planning; maxillo-facial surgeons expressed the necessity to preview the effects of bony movement in corrective surgery on the soft tissue, especially concerning the “involuntary soft tissue displacements”. We decided to work on 3D surgical prediction cause it offers an aid to the surgeons in the planning of the intervention in a more accurate and conscious manner; notwithstanding software developed for this matter already exist, no one can give a reliable prevision of the real outcome of patients underwent corrective surgery according to the surgeons.