The accuracy of three-dimensional prediction planning for the surgical correction of facial deformities using Maxilim

The Validity of 3dMD Vultus in Predicting Soft Tissue Morphology Following Orthognathic Surgery

“…The results of the current study in comparison to Shafi et al (2013) suggests that areas located in the mid-facial axis are predicted more accurately by the Mass Spring Model and those areas that were more lateral are predicted better by the Mass Tensor Model. Whether our computer software colleagues can advance orthognathic surgery planning further by combining different algorithms within the one planning programme remains to be seen.…”

“…Two major limitations of the above study were that firstly it did not assess accuracy of Most recently, Shafi et al (2013) independently verified the validity and accuracy of Maxilim (Medicim, Medical Imaging Computing, Mechelen, Belgium). The methodology employed and the subjects involved in the study by Shafi et al (2013) were identical to that of this study.…”

“…The methodology employed and the subjects involved in the study by Shafi et al (2013) were identical to that of this study. Shafi et al found an average absolute error of 0.97 mm (range 0.26 to 2.73mm), which when compared to the average absolute error of the present study at 0.92mm (range 0.3mm to 2.4mm), indicate very similar results at first glance.…”

“…The methods of 2D prediction discussed above have been criticised for the prediction of the surgical correction of facial asymmetry because the programs they do not record and therefore can not report on the third transverse dimension (Shafi et al, 2013). …”

“…Superimposition should not rely solely on landmark identification or best fit procedures on structures as these may have changed between image acquisitions (Shafi 2013). More stable structures such as, superimposition of the hard tissues on the anterior cranial base and vault are more appropriate and were selected for this study.…”