The validity of using surface meshes for evaluation of three-dimensional maxillary and mandibular surgical changes

Abstract

ReuseUnless indicated otherwise, fulltext items are protected by copyright with all rights reserved. The copyright exception in section 29 of the Copyright, Designs and Patents Act 1988 allows the making of a single copy solely for the purpose of non-commercial research or private study within the limits of fair dealing. The publisher or other rights-holder may allow further reproduction and re-use of this version -refer to the White Rose Research Online record for this item. Where records identify the publisher as the copyright holder, users can verify any specific terms of use on the publisher's website. TakedownIf you consider content in White Rose Research Online to be in breach of UK law, please notify us by emailing eprints@whiterose.ac.uk including the URL of the record and the reason for the withdrawal request.The validity of using surface meshes for evaluation of three-dimensional maxillary and mandibular surgical changes. Surface meshes for evaluation of 3D hard tissue surgical changes Key words: CBCT, surface mesh, surgical change, three-dimensional, 3D. SummaryThree-dimensional changes of hard tissue position following orthognathic surgery have been reported using 3D cephalometry, changes in volume, centroid position and changes based on the surface model of the hard tissue.The aim of this study was to determine the validity of using surface models as a method of assessing positional changes of the maxilla and the mandible.

Rapid 3D mandibular superimposition for growing patients

“…The iterative closest point tends to underestimate overall changes. 19 On the other hand, if a landmark technique were used for measurements, the error of placing the landmarks would also exist. 20 Figure 5.…”

The effect of hard tissue surgical changes on soft tissue displacement: a pilot CBCT study

“…The biggest challenge to obtain accurate results with ICP is case selection. Based on the results of this study and the limitations presented by Jabar et al, 24 the following are appropriate procedures for inclusion: maxillary advancement, mandibular advancement or setback, and bimaxillary advancement (when the movements are mainly sagittal). It is important to know that the amount of pitch and yaw rotation and even moderate vertical changes are important limiting factors for this method.…”

“…Jabar et al 24 suggested that the ICP method grossly underestimates changes in the maxilla and the mandible, based on their study using simulated orthognathic surgery. However, there is a limitation in that study that needs to be evaluated carefully.…”

"Direct DICOM Slice Landmarking” A Novel Research Technique to Quantify Skeletal Changes in Orthognathic Surgery

“…Based on a previously reported technique a plastic skull was used to simulate the surgical movements and produce a reference measurement set [ 12 ]. The technique allowed movement of the maxilla and mandible in the anterior-posterior and vertical direction only with minimal lateral or rotation movement.…”

“…Depending on the clinical cases, this may affect the validity of the measurements. In fact a recent study has shown underestimation of the magnitude of change of simulated surgical movement by about 50–70% [ 12 ].…”