There are several problems in conventional dental trainings using a mannequin due to the lack of reality. To solve such problems, we proposed in this study a dental training system using the virtual reality technology. In our system, a virtual environment and a virtual patient were produced in a virtual space, where the dental mirror and hand pieces can be operated real-timely. The force feedback of operations and a tooth cutting operation in training were realized using two computers. Furthermore, in order to be aware of and to avoid possible dangers, the tongue of the patient was moved randomly in training, and warnings with sound and a signal of blood were given when the drill contacts tongue or mucous membrane of mouth. Experiments of tooth cutting and operating were carried out with good training effects confirmed.
