Customized design of artificial mandible substitutes based on Boolean operation

To make the mandible substitutes remain ideal characters, a customized design of the mandible reconstruction based on the Boolean operation was proposed. The medical CT scan was used to obtain the original bone data to facilitate a prosthesis design. STL data format was adopted throughout the design process to avoid a format distortion due to data conversion and to ensure that the shape of the prosthesis and the original bone matched, which suggested it possible that the substitute spatial location was performed according to the free surface of human bone. This design scheme enable the mandible substitute to possess a specific shape, a correct relative position and a precise connection with a shape matching the original bone perfectly.