title: Development of a multi-layered virtual tooth model for the haptic dental training system.
abstract: A virtual reality (VR) haptic dental training system could be a promising tool for future dental education. One major challenge is to develop a virtual tooth model which similarly reflected a real tooth having multiple layers with different mechanical hardness in each layer. The multi-layered virtual tooth model was successfully constructed in our virtual system. The constructed model allows us to feel tooth cutting which is similar to that with a real tooth. Through a cutting experiment by using the real tooth, a spring coefficient and a damping coefficient of a dental hard tissue were determined 0.8 N/mm and 1.79 Nsec/mm respectively. The feedback force smoothly altered when crossing the border of regions having different mechanical hardnesses. The constructed model introduced in this study could be a promising tool for acquiring dental hand skills in a virtual learning system.
authors.affiliation: Department of Oromaxillofacial Regeneration, Osaka University, 1-8 Yamada-Oka, Suita 565-0871, Japan.
authors.forename: Yoshinori
authors.initials: Y
authors.lastname: Yoshida
authors.forename: Satoshi
authors.initials: S
authors.lastname: Yamaguchi
authors.forename: Yusuke
authors.initials: Y
authors.lastname: Kawamoto
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Noborio
authors.forename: Shinya
authors.initials: S
authors.lastname: Murakami
authors.forename: Taiji
authors.initials: T
authors.lastname: Sohmura
mesh_terms: D003198:Computer Simulation; D003194:Computer-Assisted Instruction / Q000379:methods*; D003737:Dental Cavity Preparation / Q000379:methods*; D004497:Education, Dental / Q000379:methods*; D056228:Feedback, Sensory; D006244:Hardness; D006801:Humans; D003765:Models, Dental; D014110:Touch; D014584:User-Computer Interface