Accuracy Evaluation of Virtual Surgical Planning (VSP) in Orthognathic Surgery: Comparison Between CAD/CAM Fabricated Surgical Splint and CAD/CAM Cutting Guides with PSI

2019 ◽  
Vol 77 (9) ◽  
pp. e4-e5
Author(s):  
R. Pucci ◽  
P. Priore ◽  
L. Manganiello ◽  
A. Cassoni ◽  
V. Valentini
Keyword(s):  
Orthognathic Surgery ◽  
Surgical Planning ◽  
Accuracy Evaluation ◽  
Virtual Surgical Planning ◽  
Cad Cam ◽  
Cutting Guides

scholarly journals The Role of Virtual Surgical Planning in Increasing the Predictability in Orthognathic Surgery

2019 ◽  
pp. 136-141
Author(s):  
Faisal A Quereshy ◽  
Nikolay Levintov ◽  
Justin L Nguyen ◽  
Maria A DeLeonibus ◽  
Catherine Demko ◽  
...  
Keyword(s):  
Surgical Outcomes ◽  
Orthognathic Surgery ◽  
Surgical Planning ◽  
Predictor Variable ◽  
Outcome Variable ◽  
Virtual Surgical Planning ◽  
Equal Variance ◽  
Modeling Software ◽  
Cad Cam ◽  
Medical Modeling

Purpose: To evaluate our surgical outcomes by comparing our surgical plan to the outcome of the surgery and evaluate our efficacy using Virtual Surgical Planning and Medical Modeling software. Our aim is to determine the quality and validity of Virtual Surgical Planning when comparing pre-surgical plans with post-surgical outcomes. Patients and Methods: A cohort study was conducted for patients who underwent orthognathic surgery at a single institution.  Utilizing virtual plans and models, select points for the virtual plans were compared and superimposed with that of the actual surgical movements.  The primary predictor variable were the pre-surgical virtual plans of movements; the outcome variable consisted of the actual post-surgical movements.  Statistical analysis was computed via IBM SPSS Version 25 software utilizing a paired t-test assuming equal variance with alpha (p<0.05). The sample of patients included those who had pre-operative and post-operative cone beam computed tomography scans, a virtual surgical plan, CAD/CAM splints, and LeFort I osteotomy and bilateral sagittal split osteotomy.Results: The study consisted of ten patients between the ages of 18-51 years old. Pre and post surgical plans were superimposed and four points of measurement were compared along 3 dimensional planes. There were no statistical significant associations between the virtually planned and post surgical planned values.Conclusion: Our results suggest that the use of virtual surgical planning in orthognathic surgery yields favorable and accurate surgical outcomes regarding rotational movements with minor degrees of discrepancies.

Accuracy of virtual surgical planning of orthognathic surgery with aid of CAD/CAM fabricated surgical splint—A novel 3D analyzing algorithm

2017 ◽  
Vol 45 (12) ◽  
pp. 1962-1970 ◽  
Author(s):  
Shih-Jan Chin ◽  
Frank Wilde ◽  
Michael Neuhaus ◽  
Alexander Schramm ◽  
Nils-Claudius Gellrich ◽  
...  
Keyword(s):  
Orthognathic Surgery ◽  
Surgical Planning ◽  
Virtual Surgical Planning ◽  
Cad Cam

scholarly journals The Use of a CAD/CAM Surgical Obturator Without Impressions to Restore a Maxillectomy Defect

2021 ◽  
Vol 6 ◽  
pp. 247275122199297
Author(s):  
Nicholas Callahan ◽  
Sarah L. Moles ◽  
Michael R. Markiewicz
Keyword(s):  
Surgical Planning ◽  
Tumor Resection ◽  
Free Tissue Transfer ◽  
Digital Impression ◽  
Head And Neck Reconstruction ◽  
Autologous Reconstruction ◽  
Form And Function ◽  
Virtual Surgical Planning ◽  
Tissue Transfer ◽  
Cad Cam

Immediate obturation of the patient undergoing maxillectomy who is not undergoing formal autologous reconstruction is important for immediate form and function of the patient. Exophytic tumors, that are large in dimension can make pre-operative obturator formation challenging. Traditional methods of obturator fabrication involve a physical or digital impression. Preoperative virtual surgical planning for tumor resection and reconstruction using free tissue transfer has become a mainstay in head and neck reconstruction. We describe a variation of this for a patient unable to undergo free tissue transfer where the authors used preoperative virtual surgical planning and CAD/CAM technologies to perform tumor resection, and fabricated an obturator based on the CT imaging alone.

scholarly journals Virtual Surgical Planning, Stereolitographic Models and CAD/CAM Titanium Mesh for Three-Dimensional Reconstruction of Fibula Flap with Iliac Crest Graft and Dental Implants

2021 ◽  
Vol 10 (9) ◽  
pp. 1922
Author(s):  
Carlos Navarro Cuéllar ◽  
Manuel Tousidonis Rial ◽  
Raúl Antúnez-Conde ◽  
Santiago Ochandiano Caicoya ◽  
Ignacio Navarro Cuéllar ◽  
...  
Keyword(s):  
Bone Resorption ◽  
Surgical Planning ◽  
Iliac Crest ◽  
Three Dimensional ◽  
Titanium Mesh ◽  
Iliac Crest Graft ◽  
Virtual Surgical Planning ◽  
Fibula Flap ◽  
Dimensional Reconstruction ◽  
Cad Cam

Mandibular reconstruction with fibula flap shows a 3D discrepancy between the fibula and the remnant mandible. Eight patients underwent three-dimensional reconstruction of the fibula flap with iliac crest graft and dental implants through virtual surgical planning (VSP), stereolitographic models (STL) and CAD/CAM titanium mesh. Vertical ridge augmentation and horizontal dimensions of the fibula, peri-implant bone resorption of the iliac crest graft, implant success rate and functional and aesthetic results were evaluated. Vertical reconstruction ranged from 13.4 mm to 10.1 mm, with an average of 12.22 mm. Iliac crest graft and titanium mesh were able to preserve the width of the fibula, which ranged from 8.9 mm to 11.7 mm, with an average of 10.1 mm. A total of 38 implants were placed in the new mandible, with an average of 4.75 ± 0.4 implants per patient and an osseointegration success rate of 94.7%. Two implants were lost during the osseointegration period (5.3%). Bone resorption was measured as peri-implant bone resorption at the mesial and distal level of each implant, with a variation between 0.5 mm and 2.4 mm, and with a mean of 1.43 mm. All patients were rehabilitated with a fixed implant prosthesis with good aesthetic and functional results.

scholarly journals Total joint reconstruction using computer-assisted surgery with stock prostheses for a patient with bilateral TMJ ankylosis

2019 ◽  
Vol 41 (1) ◽  
Author(s):  
Seung-Hyun Rhee ◽  
Seung-Hak Baek ◽  
Sang-Hun Park ◽  
Jong-Cheol Kim ◽  
Chun-Gi Jeong ◽  
...  
Keyword(s):  
Surgical Planning ◽  
Virtual Surgery ◽  
Computer Assisted ◽  
Lower Margin ◽  
Tmj Ankylosis ◽  
Reconstruction Surgery ◽  
Joint Reconstruction ◽  
Virtual Surgical Planning ◽  
Surgical Guides ◽  
Cad Cam

Abstract Backgrounds The purpose of this study is to discuss the total joint reconstruction surgery for a patient with recurrent ankylosis in bilateral temporomandibular joints (TMJs) using three-dimensional (3D) virtual surgical planning, computer-aided manufacturing (CAD/CAM)-fabricated surgical guides, and stock TMJ prostheses. Case presentation A 66-year-old female patient, who had a history of multiple TMJ surgeries, complained of severe difficulty in eating and trismus. The 3D virtual surgery was performed with a virtual surgery software (FACEGIDE, MegaGen implant, Daegu, South Korea). After confirmation of the location of the upper margin for resection of the root of the zygoma and the lower margin for resection of the ankylosed condyle, and the position of the fossa and condyle components of stock TMJ prosthesis (Biomet, Jacksonville, FL, USA), the surgical guides were fabricated with CAD/CAM technology. Under general anesthesia, osteotomy and placement of the stock TMJ prosthesis (Biomet) were carried out according to the surgical planning. At 2 months after the operation, the patient was able to open her mouth up to 30 mm without complication. Conclusion For a patient who has recurrent ankylosis in bilateral TMJs, total joint reconstruction surgery using 3D virtual surgical planning, CAD/CAM-fabricated surgical guides, and stock TMJ prostheses may be an effective surgical treatment option.

Answer To The Authors: 3D virtual surgical planning for positioning and orientation of the maxilla in orthognathic surgery: Methodological issues on accuracy and agreement

2020 ◽  
Author(s):  
Renata Hernandes Tonin ◽  
Liogi Iwaki Filho ◽  
Amanda Lury Yamashita ◽  
Flávio Wellington da Silva Ferraz ◽  
Elen de Souza Tolentino ◽  
...  
Keyword(s):  
Orthognathic Surgery ◽  
Surgical Planning ◽  
Methodological Issues ◽  
Virtual Surgical Planning

scholarly journals The Accuracy of Jaws Repositioning in Bimaxillary Orthognathic Surgery with Traditional Surgical Planning Compared to Digital Surgical Planning in Skeletal Class III Patients: A Retrospective Observational Study

2020 ◽  
Vol 9 (6) ◽  
pp. 1840
Author(s):  
Martina Barone ◽  
Alberto De Stefani ◽  
Ugo Baciliero ◽  
Giovanni Bruno ◽  
Antonio Gracco
Keyword(s):  
Orthognathic Surgery ◽  
Surgical Planning ◽  
Class Iii ◽  
Skeletal Class ◽  
Bimaxillary Orthognathic Surgery ◽  
Cad Cam ◽  
Treatment Objective ◽  
Digital Methods ◽  
Cephalometric Measurements ◽  
Group D

Background: Technological progress has led to the transition to digital methods to perform surgical planning and to obtain surgical splints with CAD/CAM technologies. The present study aimed to compare the accuracy of jaw repositioning in bimaxillary orthognathic surgery using traditional and digital surgical planning in skeletal class III patients. Methods: This study included 60 skeletal class III patients divided into two groups based on the method used to perform surgical planning: traditional (T, n = 30) and digital (D, n = 30). For each patient, a 2D presurgical Visual Treatment Objective (VTO) was prepared and the outcome of the surgery was compared with that planned by using determined cephalometric measurements (ANB, SNA, SNB, Ar-Go-Me, S-Ar-Go). Statistical analysis showed that the measurements planned and those obtained after surgery were equivalent in Group D. For Group T, the analysis showed equivalence only for one of the considered measurements (ANB). By comparing the results of the two groups, Group D presented a lower level of error than Group T. Conclusions: Digital surgical planning performed significantly better in terms of accuracy of jaw repositioning than the traditional protocol.

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