An optical method for determining collagen bundle orientation in bovine pericardium includes the use of a system having a light source which transmits light through a first polarizer, a tissue for making a prosthetic valve leaflet, and a second polarizer, where the light then illuminates a detector plate. The light that illuminates the detector plate is used to determine the orientation of collagen fiber bundles. The orientation of the collagen fiber bundles is used to determine where to cut the leaflet edges.

A method for providing a user interface for manufacturing a prosthesis includes identifying teeth from three-dimensional oral data of a patient, displaying a target tooth for a prosthesis manufacturing among the teeth on a screen in a selectable state by a user, displaying a first wheel menu for generation of the prosthesis for the target tooth for dental work or data removal operation, and displaying a first tool menu providing items for the generation of the prosthesis corresponding to the target tooth for dental work on the screen.