Comparison of condylar position in orthognathic surgery cases treated with virtual surgical planning vs. conventional model planning

Abstract

Structured Abstract Objectives To assess the effect of virtual surgical planning (VSP) on the accuracy of condylar seating in surgical cases involving Bilateral Sagittal Split Osteotomy (BSSO). An additional aim was to quantify differences between actual surgical outcome and planned virtual outcome. Setting and sample population A private practice in Charlotte North Carolina. Twenty‐five consecutively operated subjects prepared with VSP and twenty consecutively subjects operated with conventional surgery planning were enrolled. Material and Methods Cone beam computed tomography (CBCT) scans were obtained before surgery (T1) and post‐surgery after splint removal (T2). The T1 and T2 CBCTs were superimposed on the anterior cranial base using voxel‐based registration. Three dimensional (3D) models were built and oriented to a 3D Frankfurt horizontal. Displacement of corresponding condylar landmarks was measured. Results No significant difference was found between the VSP and conventional group in the magnitude of translation or rotation of the condyles following surgery. VSP surgical outcomes differed significantly from predicted positions at all landmarks. Virtual surgical planning does not prevent changes to condylar position as a result of surgery. Actual surgical results differed significantly from VSP‐predicted outcomes. Conclusions Virtual surgical planning did not reduce the changes to condylar position and angulation that resulted from conventionally planned orthognathic surgery.

Comparison of Changes in the Condylar Volume and Morphology in Skeletal Class III Deformities Undergoing Orthognathic Surgery Using a Customized versus Conventional Miniplate: A Retrospective Analysis

“…Wan et al reported the effect of virtual surgical planning (VSP) on the accuracy of condylar seating in surgical cases related to BSSRO and assessed differences between the actual surgical results and planned virtual results. They concluded that VSP did not lessen changes in the condylar position or angulation compared with conventional planning in OGS, which is similar to our findings [15].…”

Conformity of the Virtual Surgical Plan to the Actual Result Comparing Five Craniofacial Procedure Types

“…Virtual surgical plan conformity has been assessed in prior studies for cranial vault remodeling, 7,33 orthognathic surgery, 11,12,15,[34][35][36] and mandibular reconstruction. 8,[37][38][39][40][41][42][43] Overall, these studies used cephalometric point analysis and found a high degree of linear and angular virtual surgical plan accuracy.…”

Current Orthognathic Practice in India: Do We Need to Change?

“…With the advent of VSP and NS, has there been any improvement in intra-operative seating of the condyle? Wan et al [56] concluded that VSP 3D printed splints did not reduce the changes to condylar position and angulation that resulted from conventionally planned orthognathic surgery. Bettega et al [57], Bettega and Leitner [58], Bettega et al [59] and Nova et al [60] have documented acceptable results using experimental NS protocols to reposition the condyle.…”