scholarly journals Comparison of time and cost between conventional surgical planning and virtual surgical planning in orthognathic surgery in Korea

2019 ◽  
Vol 41 (1) ◽  
Author(s):  
Si-Yeon Park ◽  
Dae-Seok Hwang ◽  
Jae-Min Song ◽  
Uk-Kyu Kim
Keyword(s):  
Orthognathic Surgery ◽  
Surgical Planning ◽  
Three Dimensional ◽  
Reduction Rate ◽  
Virtual Surgical Planning ◽  
Time Investment ◽  
Sagittal Split Osteotomy ◽  
Group I ◽  
Bilateral Sagittal Split Osteotomy ◽  
Group Ii

Abstract Background The purpose of this study was to measure the time of the conventional surgical planning (CSP) and virtual surgical planning (VSP) in orthognathic surgery and to compare them in terms of cost. Material and method This is a retrospective study of the patients who underwent orthognathic surgery at the Pusan National University Dental Hospital from December 2017 to August 2018. All the patients were analyzed through both CSP and VSP, and all the surgical stents were fabricated through manual and three-dimensional (3D) printing. The predictor variables were the planning method (CSP vs. VSP) and the surgery type (group I: Le Fort I osteotomy + bilateral sagittal split osteotomy [LFI+BSSO] or group II: only bilateral sagittal split osteotomy [BSSO]), and the outcomes were the time and cost. The results were analyzed using the paired t test. Results Thirty patients (12 females, 18 males) met the inclusion criteria, and 17 patients were excluded from the study due to missing or incomplete data. There were 20 group I patients (LFI+BSSO regardless of genioplasty) and 10 group II patients (BSSO regardless of genioplasty). The average time of CSP for group I was 385 ± 7.8 min, and that for group II was 195 ± 8.33 min. The time reduction rate of VSP compared with CSP was 62.8% in group I and 41.5% in group II. On the other hand, there was no statistically significant cost reduction. Conclusions The time investment in VSP in this study was significantly smaller than that in CSP, and the difference was greater in group I than in group II.

scholarly journals Comparison of time and cost between conventional surgical planning and virtual surgical planning in orthognathic surgery in Korea

2021 ◽  
Vol 43 (1) ◽  
Author(s):  
Si-Yeon Park ◽  
Dae-Seok Hwang ◽  
Jae-Min Song ◽  
Uk-Kyu Kim
Keyword(s):  
Orthognathic Surgery ◽  
Surgical Planning ◽  
Reduction Rate ◽  
Virtual Surgical Planning ◽  
Time Investment ◽  
Sagittal Split Osteotomy ◽  
Group I ◽  
Bilateral Sagittal Split Osteotomy ◽  
Group Ii ◽  
The Difference

Abstract Background The purpose of this study was to measure the time of the conventional surgical planning (CSP) and virtual surgical planning (VSP) in orthognathic surgery and to compare them in terms of cost. Material and method This is a retrospective study of the patients who underwent orthognathic surgery at the OOOOO University Dental Hospital from December 2017 to August 2018. All the patients were analyzed through both CSP and VSP, and all the surgical stents were fabricated through manual and 3-dimensional (3D) printing. The predictor variables were the planning method (CSP vs. VSP) and the surgery type (group I: Le Fort I osteotomy+bilateral sagittal split osteotomy [LFI+BSSO] or group II: only bilateral sagittal split osteotomy [BSSO]), and the outcomes were the time and cost. The results were analyzed using paired t test. Results Thirty patients (12 females, 18 males) met the inclusion criteria, and 17 patients were excluded from the study due to missing or incomplete data. There were 20 group I patients (LFI+BSSO regardless of genioplasty) and 10 group II patients (BSSO regardless of genioplasty). The average time of CSP for group I was 385±7.8 min, and that for group II was 195±8.33 min. The time reduction rate of VSP compared with CSP was 62.8% in group I and 41.5% in group II. On the other hand, there was no statistically significant cost reduction. Conclusions The time investment in VSP in this study was significantly smaller than that in CSP, and the difference was greater in group I than in group II.

Orthognathic Surgery

2019 ◽  
pp. 609-622
Author(s):  
Ryan M. Moore ◽  
Raj M. Vyas
Keyword(s):  
Orthognathic Surgery ◽  
Surgical Planning ◽  
Preoperative Evaluation ◽  
Cephalometric Analysis ◽  
Operative Techniques ◽  
Virtual Surgical Planning ◽  
Bilateral Sagittal Split Osteotomy ◽  
Operative Planning ◽  
Facial Proportions ◽  
Facial Function

Orthognathic surgery restores the facial function and aesthetics affected by skeletal and dental deformities. A comprehensive preoperative evaluation, including cephalometric analysis, is essential to correcting facial skeletal imbalance and asymmetry. Operative planning must account for maxillary-to-mandibular occlusal relationship and dental compensations, as well as facial proportions in all dimensions. Virtual surgical planning has recently emerged as a way to facilitate more precise and accurate surgical planning. Operative techniques used to correct facial skeletal and dental deformities, broadly categorized as maxillary or mandibular excess or deficiency, include the LeFort I osteotomy, bilateral sagittal split osteotomy, and genioplasty.

Segmentation and Three Dimensional Visualization of Mandible Using Active Contour and Visualization Toolkit in Craniofacial Computed Tomography Images

2020 ◽  
Vol 17 (1) ◽  
pp. 61-67
Author(s):  
Jithy Varghese ◽  
Tripty Singh ◽  
Venkatraman Bhat ◽  
Moni Kuriakose
Keyword(s):  
Computed Tomography ◽  
Orthognathic Surgery ◽  
Active Contour ◽  
Surgical Planning ◽  
Three Dimensional ◽  
Bone Surface ◽  
Facial Bone ◽  
Virtual Surgical Planning ◽  
Computed Tomography Images ◽  
Segmentation Accuracy

Three-dimensional representation of facial bone surface is needed in the virtual surgical planning for orthognathic surgery. Segmentation of facial bone surface from computed tomography images is first step in developing the 3D model. This paper focuses on segmentation of mandible bone using active contour segmentation of Insight Segmentation and Registration Toolkit library. The results are given as 3D stereo lithographic image. The result is compared with the ground truth image segmented by an expert radiologist. Various evaluation metrics are used for finding the segmentation accuracy and the result has given segmentation accuracy of 97.50%. Therefore, this method can be used as an initial step in automatic cephalometric land marking, an important task in virtual surgical planning for orthognathic surgery.

Three-dimensional virtual surgical planning (3D-VSP) in orthognathic surgery: Advantages, disadvantages and pitfalls

2020 ◽  
pp. 146531252095487
Author(s):  
Chris D Donaldson ◽  
Mehmet Manisali ◽  
Farhad B Naini
Keyword(s):  
Computer Aided Design ◽  
Orthognathic Surgery ◽  
Surgical Planning ◽  
Three Dimensional ◽  
Open Bite ◽  
Anterior Open Bite ◽  
Skeletal Class ◽  
Virtual Surgical Planning ◽  
Skeletal Class Ii ◽  
Computer Aided

In this article, the advantages, disadvantages and pitfalls of three-dimensional virtual surgical planning (3D-VSP) compared to traditional two-dimensional (2D) planning methods in orthognathic surgery are discussed, alongside a standardised protocol that can be utilised. A skeletal Class II, skeletal Class III and an anterior open bite clinical case along with their 3D-VSP management are presented, highlighting modifications that can be made to computer-aided design/computer-aided manufacture (CAD/CAM) cutting guide and plate designs.

scholarly journals The Use of Virtual Surgical Planning in Total Facial Skeletal Reconstruction of Treacher Collins Syndrome: A Case Report

2018 ◽  
Vol 11 (3) ◽  
pp. 230-237 ◽  
Author(s):  
Yifan Guo ◽  
Joseph Lopez ◽  
Robin Yang ◽  
Alexandra Macmillan ◽  
Amir H. Dorafshar
Keyword(s):  
Case Report ◽  
Orthognathic Surgery ◽  
Surgical Planning ◽  
Three Dimensional ◽  
Treacher Collins Syndrome ◽  
Computer Assisted ◽  
Craniofacial Abnormalities ◽  
Virtual Surgical Planning ◽  
Facial Harmony ◽  
Skeletal Reconstruction

Facial skeletal reconstruction of patients with severe Treacher Collins syndrome (TCS) requires correction of both midface and mandibular deficiencies. Implementing virtual surgical planning can provide an accurate three-dimensional analysis of craniofacial abnormalities, creating calvarial donors that match the anatomy of the desired malar augmentation and facilitating bimaxillary movements, positioning, and fixation in orthognathic surgery. We present a case of an 18-year-old patient with TCS, who underwent staged zygomaticomaxillary reconstruction and double-jaw osteotomy with sliding genioplasty, using computer-assisted surgical planning. Following these operations, the patient achieved not only improved facial harmony but also class I occlusion.

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.

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