Abstract: It is important to use post and core restoration techniques to repair the residual tooth crown and root in the treatment of oral rehabilitation． The study on developing a kind of multi-directional fiber-reinforced composite materials used for preparation of integrated post-and-core products was proposed and performed． At first,two kinds of multi-directional fiber reinforcing design were supposed． And finite element analysis was applied to assess stress distribution throughout post-and-core and tooth root with the aid of dental CAD digital model,by which multi-directional fiber reinforcing design was optimized． Secondly,the processing parameters and machines were modified,namely pultrusion-winding technique,to produce the multi-directional FRC materials successfully． At last,basing on an oral CAD/CAM system, integrated FRC post-and-cores were machined． According to macro-and microscopical observation,the final products demonstrated prospective properties and further application in clinic practices．

Key words: integrated post-and-core, fiber-reinforced composite materials, residual roots and crowns, oral CAD/CAM system