Mixed reality software for dental simulation system

This paper presents a dental simulation system. This is prepared for students in the faculty of dentistry so as to examine skills of dental surgery operations. The mixed reality system is for cutting human STL-based teeth by a STL-based bar mounted on a turbine. All STL-based data is captured by the computed tomography (CT) scan. It uses X-rays to make detailed pictures of the structures in and around a human oral for each patient. As a result, we expect a personal-oriented treatment. Furthermore, the system has visual, tactile, and sound realities. The visual reality is supported by the OpenGL, the velocity of bar tip is an output and the tactile reality is an input in the OpenHaptics. In addition, the sound reality is controlled by the OpenAL, which is directly monitored from a wonderful microphone. All are combined by Microsoft Foundation Class (MFC) as a human interface. Finally, we can feel a tactile force on the basis of the penalty method using penetration depth and relative velocity between STL-based bar and teeth. To calculate the penetration depth quickly, we use the Quickhull and Gilbert, Johnson and Keerthi (GJK) algorithms.