Abstract
To meet the requirement for the new educational system in oral implantology at dental colleges that is expected to reduce the number of medical accidents in oral implant surgery, a new force sensing device for drilling the mandibular trabecular bone has been developed. The drilling force was calculated by stochastic multiscale finite element method based on the micro-CT images of cadavers. Not only the inter-individual difference but also the intra-individual difference, which means the variation of drilling force in the trabecular bone region, has been considered by the micro-CT image-based analyses. The multiscale method could analyze the anisotropic nature of the trabecular bone. Hence, the drilling in different angle results in different drilling force. The inter- and intra-individual differences and the consideration of anisotropy are essential in the education of bone quality. The calculated drilling force was implemented in the force sensing device that can control the drilling speed reflecting the input force. The developed system was used in the problem based learning (PBL) class at Tokyo Dental College. The result of the force sensing by students is reported, which supports the usefulness of the developed system.
