Nanjing University

Yidi Zhang

Xun Cao

Hao Zhu

Zhuoyi Liao

Weibin Sun

A ray-free dental X-ray periapical film virtual imaging method based on virtual reality (VR) includes: constructing a VR positioning system, and tracing a position of a tracker bonded bound with a tube of a dental film machine and a spatial attitude matrix in real time; scanning and reconstructing a digital three-dimensional (3D) model of dentition; respectively setting different materials and transparency for a shell of a tooth model and an internal pulp cavity; constructing a virtual environment of a simulated oral cavity; assigning an attitude and position of the tracker to a virtual camera by using a network communication module, and controlling the virtual camera to move; placing the tracker in a specific position and orientation to calibrate so as to obtain a position coordinate of a dentition model in the virtual environment; and aligning the tube to teeth, and rendering a virtual periapical film.

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Jiangsu, China

Yidi Zhang