This small group of seven patients had a Le Fort I advancement maxillary osteotomy with vertical repositioning and alar base cinch sutures. They were assessed with cone beam CTs three months preoperatively and one year postoperatively. A clinical comparison between the programmes of Dolphin, ProPlan CMF and Probabilistic Finite Element Modelling was undertaken. They found that PFEM and ProPlan were equally accurate in soft tissue prediction in comparison to Dolphin. They found that Dolphin under predicts soft tissue movements in the paranasal region whilst predicting changes mainly in the upper lip. In comparison ProPlan and PFEN show continuous displacement of the upper lip and paranasal regions. Overall they concluded that all 3D predictions are useful and accurate within 2mm. They do however acknowledge the multiple potential criticisms in this paper ranging from the small group, reference points and differences in the planned and eventual position of the maxilla.
