scholarly journals Three-dimensional virtual-reality surgical planning and soft-tissue prediction for orthognathic surgery

2001 ◽  
Vol 5 (2) ◽  
pp. 97-107 ◽  
Author(s):  
James Xia ◽  
H.H.S. Ip ◽  
N. Samman ◽  
H.T.F. Wong ◽  
J. Gateno ◽  
...  
Keyword(s):  
Virtual Reality ◽  
Soft Tissue ◽  
Orthognathic Surgery ◽  
Surgical Planning ◽  
Three Dimensional

scholarly journals A Perioral Soft Tissue evaluation after Orthognathic Surgery Using Three-Dimensional Computed Tomography Scan

2018 ◽  
Vol 12 (1) ◽  
pp. 366-376
Author(s):  
Rahul Tiwari ◽  
P. Srinivas Chakravarthi ◽  
Vivekanand S. Kattimani ◽  
Krishna Prasad Lingamaneni
Keyword(s):  
Computed Tomography ◽  
Soft Tissue ◽  
Orthognathic Surgery ◽  
Soft Tissues ◽  
Three Dimensional ◽  
Computed Tomography Scan ◽  
Nasolabial Angle ◽  
Tissue Changes ◽  
Soft Tissue Changes ◽  
Tomography Scan

Background: Facial appearance is an important factor, affects social and psychological well-being. The ideal positioning of jaws and soft tissues is crucial during orthognathic surgery for a better outcome, but the response of facial soft tissues does not always reflect the exact movements of the underlying jaws in 1:1 ratio. So, soft tissue changes following orthognathic surgery require utmost attention during surgical correction to make successful treatment. Aims and Objectives: Evaluation of perioral soft tissue changes after orthognathic surgical procedures. The objectives of the study were to assess and compare pre and post-operative perioral soft tissue changes of lip width, nasolabial and mentolabial angle using Three Dimensional Computed Tomography scan (3DCT). Patient and Methods: The study involved ten patients for evaluation requiring orthognathic surgical procedures (maxillary or mandibular anteroposterior excess or deficiency, transverse deformities, vertical maxillary excess and facial asymmetry) presented to the department of oral and maxillofacial surgery during 2014-2016. Pre and post-operative 3DCT scan were taken after 12 months using iCT 256 slice whole body CT scanner and evaluated for changes using Dicom PMS D view. Results: Significant changes were observed in nasolabial angle after maxillary advancement (1.81°) and maxillary setback procedure (2.73°). The mentolabial angle was significantly increased with mandibular setback procedures (3.27°). Mandibular advancement procedures showed both increase (3.6°) and decrease (7.6°) in mentolabial angle. Conclusion: 3DCT showed a significant difference in perioral soft tissue changes in nasolabial and mentolabial angle but no significant change was observed in lip width. 3DCT is a reliable tool for 3D assessment. The conventional thought of changes in Nasolabial angle after surgery is changing due to the underlying factors which should be considered for prediction.

scholarly journals Three dimensional evaluation of soft tissue after orthognathic surgery

2018 ◽  
Vol 14 (1) ◽  
Author(s):  
Junho Jung ◽  
Chi-Heun Lee ◽  
Jung-Woo Lee ◽  
Byung-Joon Choi
Keyword(s):  
Soft Tissue ◽  
Orthognathic Surgery ◽  
Three Dimensional

scholarly journals Impact of Virtual Reality in Arterial Anatomy Detection and Surgical Planning in Patients with Unruptured Anterior Communicating Artery Aneurysms

2020 ◽  
Vol 10 (12) ◽  
pp. 963
Author(s):  
Samer Zawy Alsofy ◽  
Ioanna Sakellaropoulou ◽  
Makoto Nakamura ◽  
Christian Ewelt ◽  
Asem Salma ◽  
...  
Keyword(s):  
Virtual Reality ◽  
Surgical Planning ◽  
Haptic Feedback ◽  
Three Dimensional ◽  
Vascular Anatomy ◽  
Anatomical Variations ◽  
Surgical Strategy ◽  
Anterior Communicating Artery ◽  
Head Positioning ◽  
Arterial Anatomy

Anterior-communicating artery (ACoA) aneurysms have diverse configurations and anatomical variations. The evaluation and operative treatment of these aneurysms necessitates a perfect surgical strategy based on review of three-dimensional (3D) angioarchitecture using several radiologic imaging methods. We analyzed the influence of 3D virtual reality (VR) reconstructions versus conventional computed tomography angiography (CTA) scans on the identification of vascular anatomy and on surgical planning in patients with unruptured ACoA aneurysms. Medical files were retrospectively analyzed regarding patient- and disease-related data. Preoperative CTA scans were retrospectively reconstructed to 3D-VR images and visualized via VR software to detect the characteristics of unruptured ACoA aneurysms. A questionnaire was used to evaluate the influence of VR on the identification of aneurysm morphology and relevant arterial anatomy and on surgical strategy. Twenty-six patients were included and 520 answer sheets were evaluated. The 3D-VR modality significantly influenced detection of the aneurysm-related vascular structure (p = 0.0001), the recommended head positioning (p = 0.005), and the surgical approach (p = 0.001) in the planning of microsurgical clipping. Thus, reconstruction of conventional preoperative CTA scans into 3D images and the spatial presentation in VR models enabled greater understanding of the anatomy and pathology, provided realistic haptic feedback for aneurysm surgery, and influenced operation planning and strategy.

Orthognathic Surgery of the Mandible

2021 ◽  
Author(s):  
Sara Bahmanyar ◽  
Arya W. Namin ◽  
Robert O. Weiss ◽  
Aurora G. Vincent ◽  
Andrew M. Read-Fuller ◽  
...  
Keyword(s):  
Soft Tissue ◽  
Surgical Technique ◽  
Orthognathic Surgery ◽  
Orthodontic Treatment ◽  
Surgical Planning ◽  
Surgical Techniques ◽  
Preoperative Assessment ◽  
Virtual Surgical Planning ◽  
Facial Esthetics ◽  
Technological Advances

AbstractOrthognathic surgery performed in conjunction with orthodontic treatment is commonly performed to correct skeletal irregularities and realign the maxillomandibular relationship to improve occlusal function and facial esthetics. A thorough understanding of soft tissue esthetics, skeletal and occlusal relationships, and surgical techniques is required to obtain successful results. Surgical techniques have evolved greatly throughout history, as technological advances such as virtual surgical planning have become available and widely used to obtain predictable movements with minimized complications. The aim of this article is to review the orthognathic surgical procedures of the mandible, with particular attention to the indications, contraindications, preoperative assessment, surgical technique, and possible complications encountered.

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