Research and development of haptic simulator for Dental education using Virtual reality and User motion

Abstract

The purpose of this paper is to develop simulations that can be used for virtual education in dentistry. The virtual education to be developed will be developed with clinical training and actual case data of tooth extraction. This development goal is to allow dental students to learn the necessary surgical techniques at the point of their choice, not going into the operating room, away from time, space, and physical limits. I want to develop content using VR. Oculus Rift HMD, Optical Based Outside-in Tracking System, Oculus Touch Motion Controller, and Headset as Input / Output Device. In this configuration, the optimization method is applied convergent, and when the operation of the VR contents is performed, the content data is extracted from the interaction analysis formed in the VR engine, and the data is processed by the content algorithm. It also computes events and dental operations generated within the 3D engine programming and generates corresponding events through data processing according to the input signal. The visualization information is output to the HMD using the rendering information. In addition, the operating room environment was constructed by studying lighting and material for actual operating room environment. We applied the ratio of actual space to virtual space and the ratio between character and actual person to create a spatial composition at a similar rate to actual space.

Figure 1. Development system of composition

Figure 2. Scenario conceptual diagram of VR dental extraction contents

Figure 3. Development system of composition

Figure 4. Realization of motion-based motion based interaction using HMD

Figure 5. Relationship between centers of acquired image coordinates and position on monitor for center point coordination of head movement

Figure 6. Apply shader using real person's texture data

Figure 7. Render to Texture

Fig 8. Configuration of medical chair