Role of Virtual Surgical Planning in Increased Predictability of Orthognathic Surgery

Quereshy, Faisal A.; Baur, Dale A.; Levintov, Nikolay; Altay, Mehmet Ali; Bazina, M. I.

doi:10.1016/j.joms.2015.06.145

Cited by 3 publications

(3 citation statements)

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“…Quereshv et al studied the results achieved by virtual planning statistically and arrived at a conclusion stating that no “statistically significant” difference was present between the planned and the achieved orthognathic movements. A mean difference of 2 mm was seen which was not statistically significant [ 11 ].…”

Section: Discussionmentioning

confidence: 99%

Evaluation of Soft Tissue Changes Following Orthognathic Surgery Using Virtual Surgical Planning Software

Srikanth,

Somasundaram,

Raja

2024

Cureus

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Context: Orthognathic surgery brings about a harmonious relationship between jaws, resulting in improved facial aesthetics. It is key to analyze if satisfactory results can be attained by using virtual surgical planning for orthognathic procedures so as to recommend it for routine clinical practice. Aims: The aims of this study were to evaluate the various soft tissue changes that take place following orthognathic surgery using three-dimensional (3D) imaging and virtual surgical planning software and quantify the accuracy of virtual surgical planning software on patients undergoing orthognathic surgery. Settings and design: This is an observational prospective study with a sample size of 12. Methods and materials: In this prospective study, 12 patients undergoing orthognathic surgery were included following the inclusion and exclusion criteria. A usual pre-surgical work-up was done and a 3D replica of the facial skeleton was formulated using the software with the DICOM data acquired from the patient i.e., CT and scans of patient’s dentition. Virtual surgical planning was done and splints were manufactured according to the desired newly achieved position. Patients were operated following the virtual surgical plan guided by the computer-aided design and computer-aided manufacturing (CAD-CAM) splints. Post-operative evaluation was done. As the study is more of a descriptive study to obtain detailed knowledge of a new procedure, only one group is being studied and hence there is no statistical testing included in this study. Results: The mean discrepancy noticed after superimposition of soft tissue points was 0.92 with a standard deviation of 0.3. Conclusions: 3D CT virtual surgical planning is a reliable tool to achieve predictable and reliable post-operative results in orthognathic surgical cases.

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Section: Discussionmentioning

confidence: 99%

Evaluation of Soft Tissue Changes Following Orthognathic Surgery Using Virtual Surgical Planning Software

Srikanth,

Somasundaram,

Raja

2024

Cureus

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“…Success in orthognathic surgery depends not only on the technical aspects of the operation but to a larger extent on the formulation of a precise surgical plan, consistency and capability of achieving predictable, stable results. 1 New 3D tools have lately arisen to help us improve accuracy and results, such as virtual surgical planning, which has long been applied in craniofacial surgery but less so in maxillofacial surgery. 2 Because of current improvement in imag ing and software, computer-assisted surgery has been increasingly used in orthognathic surgery to improve surgical outcomes.…”

Section: Introductionmentioning

confidence: 99%

“…The development of computer-aided surgical simulation represents a paradigm shift in surgical planning for patients with cranio-maxillofacial deformities. 5 Three-dimensional imaging-based planning systems enable the surgeon to establish necessary osteotomy planes preoperatively and assess different surgical scenarios 1 . With these, surgeons are able to design an accurate preoperative surgical plan that foresees limitations and inappropriate movements so that these are avoided in the operating room.…”

Section: Introductionmentioning

confidence: 99%

Predictability and Accuracy between 3D Virtual Surgical Planning and Actual Outcomes in Orthognathic Surgery

Martínez¹

2021

MRPRS

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Introduction: We are living a paradigm shift in orthognathic surgery. Several tools and technological advances are being implemented to help improve surgical experience and to offer better functional and aesthetical results. Virtual surgical planning is a revolutionary tool which helps us design the surgical plan preoperatively and establish a surgical protocol specifically designed for that patient. In this study, our goal is to validate the predictability of virtual surgical planning in orthognathic surgery, comparing the final results with the virtual plan. Material and methods: We performed an ICP based super imposition of 3D models of the virtual planning preoperatively designed and the 3D model of the postoperative CBCT using free software (Slicer) in patients who underwent bimaxillary orthognathic surgery. The results of the super imposition were saved on the postoperative model and presented as a color-coded map. This was generated as a .vtk file that was exported to another free software that displayed the difference in mm in relevant cephalometric points (point A, point B, pogonion, left and right gonion and first upper molars) in the three axis (x, y and z) between the postoperative result and the virtual plan. Then, we registered these results for all patients and analysed these data. Results: A total of 41 patients were included. The median of the differences in mm between virtual planning and postoperative results were less than 1mm for all cephalometric points, except for both gonion, where greater than 1mm differences were found in the mediolateral (horizontal) direction. For the rest of landmarks, the highest differences were found at A point and pogonion in the anteroposterior direction (0,83mm and 0,78mm, respectively). Conclusions: We found overall small and tolerable differences (<1mm) between the planned movements and the postoperative results. The highest were found at the gonion in the mediolateral direction and mandibular rami, which could be explained by the torque of the proximal segment. The differences in A point and pogonion in the anteroposterior direction were the highest among the rest, which may be related to inaccuracy of the splint in this direction.

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Evaluation of the Predictability and Accuracy of Orthognathic Surgery in the Era of Virtual Surgical Planning

et al. 2022

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Virtual surgical planning allows orthognathic surgeons to design a surgical plan preoperatively and establish a personalized surgical protocol. This study aims to validate the predictability and accuracy of orthognathic surgery through a comparison of the three-dimensional (3D) models of the virtual planning and postoperative CBCT using free software (3D Slicer) on 40 patients who underwent bimaxillary orthognathic surgery. The distances of point A, point B, pogonion (Pog), and the first upper and lower molars, both in each axis (x, y, and z) and in the 3D space, were analyzed. The median of the distances in the mediolateral direction was the lowest, while the highest differences were found at point A and Pog in the anteroposterior direction (0.83 mm and 0.78 mm, respectively). Vertical differences were higher in the maxilla than in the mandible. In conclusion, we found that orthognathic bimaxillary surgery using virtual surgical planning was more accurate when positioning the bone segments in the mediolateral direction, using the information provided by the splint, as well as when positioning the mandible compared to the maxilla.

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Role of Virtual Surgical Planning in Increased Predictability of Orthognathic Surgery

Cited by 3 publications

References 0 publications

Evaluation of Soft Tissue Changes Following Orthognathic Surgery Using Virtual Surgical Planning Software

Evaluation of Soft Tissue Changes Following Orthognathic Surgery Using Virtual Surgical Planning Software

Predictability and Accuracy between 3D Virtual Surgical Planning and Actual Outcomes in Orthognathic Surgery

Evaluation of the Predictability and Accuracy of Orthognathic Surgery in the Era of Virtual Surgical Planning

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