Evaluation of voice commands for mode change in virtual reality implant planning procedure (original) (raw)
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International Journal of Computer Assisted Radiology and Surgery
Purpose Many surgical complications can be prevented by careful operation planning and preoperative evaluation of the anatomical features. Virtual dental implant planning in three-dimensional stereoscopic virtual reality environment has advantages over three-dimensional projections on two-dimensional screens. In the virtual environment, the anatomical areas of the body can be assessed and interacted with in six degrees-of-freedom. Our aim was to make a preliminary evaluation of how professional users perceive the use of the virtual environment on their field. Methods We prepared a novel implementation of a virtual dental implant planning system and conducted a small-scale user study with four dentomaxillofacial radiologists to evaluate the usability of direct and indirect interaction in a planning task. Results We found that all four participants ranked direct interaction, planning the implant placement without handles, to be better than the indirect condition where the implant mode...
JMIR Serious Games
Background As an integral part of computer-assisted surgery, virtual surgical planning (VSP) leads to significantly better surgery results, such as for oral and maxillofacial reconstruction with microvascular grafts of the fibula or iliac crest. It is performed on a 2D computer desktop screen (DS) based on preoperative medical imaging. However, in this environment, VSP is associated with shortcomings, such as a time-consuming planning process and the requirement of a learning process. Therefore, a virtual reality (VR)–based VSP application has great potential to reduce or even overcome these shortcomings due to the benefits of visuospatial vision, bimanual interaction, and full immersion. However, the efficacy of such a VR environment has not yet been investigated. Objective This study aimed to demonstrate the possible advantages of a VR environment through a substep of VSP, specifically the segmentation of the fibula (calf bone) and os coxae (hip bone), by conducting a training cou...
Evaluation of a Multimodal VR training platform for maxillofacial surgery
BIO Web of Conferences, 2011
One of the most striking features of virtual reality systems is their ability to enrich training experience by allowing the developments of sophisticated feedbacks. This study focuses on the way to use modality management in virtual reality systems to accelerate training in a surgical task involving bone drilling.
2012 18th International Conference on Virtual Systems and Multimedia, 2012
This paper presents the development of an application created to assist the teaching of dental structures, generate rich content information and different manners of interaction. An ontology was created to provide semantics informations for virtual models. We also used two devices gesture-based interaction: Kinect and Wii Remote. It was developed a system which use intuitive interaction, and it is able to generate three dimensional images, making the experience of teaching / learning motivating. The projection environment used by the system was called Mini CAVE.
The virtual reality simulator development for dental students training: a pilot study
2021
The technologies of the augmented and virtual reality have a special role in medical education as an additional tool for training professional skills in pre-clinical practice. In the paper, we describe the development of a virtual reality simulator with immersion in VR scene for dentist office and simulation of tooth drilling. Such kinds of simulators would contribute to evolving capacities of motor skills and hand-eye coordination. The VR simulator for dental students training is developed for Oculus Quest 2 VR headset with six degrees of freedom. The Marching Cubes algorithm is chosen as an optimal decision for autonomous VR headsets, the computational power of which is much lower than PCs. The main stages of the development of tooth drilling simulation are considered. They include voxelization, marching cubes algorithm, collision detection, and detection of penetration depth of the dental drill. The experience of VR scene using for dental students training has been piloted at the...
Detecting interaction variables in a mixed reality system for maxillofacial-guided surgery
2006
Abstract. To establish a relation between the user preferences and accuracy while using a VR or MR system and the set of components (technical, functional and perceptual) used in the system conception is yet a challenge. In this work we study the user reaction in relation to image guided surgery applications using different kind of visualization and guidance. Our goal is to identify practical basis that explains how mixed reality interfaces might provide support and augmentation for interactive applications.
A virtual reality simulator for teaching and evaluating dental procedures
2010
Summary Objectives: We present a dental training system with a haptic interface that allows dental students or experts to practice dental procedures in a virtual environment. The simulator is able to monitor and classify the performance of an operator into novice or expert categories. The intelligent training module allows a student to simultaneously and proactively follow the correct dental procedures demonstrated by an intelligent tutor.
Clinical Oral Implants Research, 2010
Objectives: This study evaluated the transference of virtual planning and planning over biomedical prototypes for dental implant placement using guided surgery. Material and methods: This experiment was conducted with 11 identical replicas of a human edentulous mandible. For each mandible, models and surgical guides were manufactured using stereolithography. Simulated surgeries were performed on the prototypes. Following this, the implants were placed in the mandible replicas. Superposition of the tridimensional pre-and postoperative models was used for virtual evaluation. The real evaluation was conducted by linear measurements directly on the models. Results: The variations in angles and distances between the coronal, central and apical regions of the 22 implants evaluated in this study had mean values o1.451 and 0.41 mm. The correlations between the positions of implant beds in each mandible were fair to very good, according to the distance analyzed and the interpretation guidelines used. Conclusions: According to the results of this study, the variations found in the transference of dental implant positioning to the operative field, determined during virtual planning and obtained in surgeries simulated with biomedical prototypes, confirm the reliability of guided surgery techniques in implantology.
About the Features of the Virtual Simulators Development and their Usage in Dental Education
2021
The different AR/VR-simulators in dental education, the features of the virtual scene development with the interactive dental drill and X-rays virtual gallery as well as the perspectives of VR-simulators usage in the future dentists training are investigated in the article. The abilities of Oculus Quest 2 usage and similar virtual headsets for stomatophobia prevention, local anesthesia performance in pediatric dentistry, osteoplasty, and physical rehabilitation are discussed. The development of a VR simulator was carried out for the Oculus Quest 2 virtual headset, which determined the need to use the experimental Universal Render Pipeline, Bakery, and Progressive engines to create a realistic VR scene of a dental office, just like the XR Interaction Toolkit framework for implementing user interaction with virtual dental tools. The interaction with the virtual X-ray gallery is organized with the help of a friendly-user windowed interface realized in the virtual environment and the ca...