Method and system for making dental prosthesis

A system for manufacturing a dental prosthesis, said system comprising:

• a computer configured to receive data associated to one or more optical properties of a tooth, and for combining said data with a layered numerical representation of said dental prosthesis, so as to link numerical optical property values representative of each of said one or more optical properties of said tooth to each layer of said layered numerical representation;
• and
• a stereolithography machine configured to be controlled by said computer;
• said stereolithography machine comprising:
• a container adapted to contain a light sensitive liquid substance, wherein said light sensitive liquid substance includes at least a first light sensitive material suitable to polymerize upon exposure to a predefined light radiation;
• a first tank, which is in communication with said container and is adapted to contain said first light sensitive material;
• one or more second tanks, which are in communication with said container and are adapted to contain a corresponding modifier material having optical properties different from the optical properties of said first light sensitive material;
• a feeding device adapted to cause selective and controlled outflow of said first light sensitive material and/or of one or more of said modifier materials toward said container;
• and
• an irradiation device adapted to cause the selective solidification of said light sensitive liquid substance, when said light sensitive liquid substance is present in said container;
• wherein said computer is configured to control said feeding device based on the optical property values of any of the layers of said layered numerical representation, so as to adjust a composition of said liquid substance present in said container to the optical properties of said tooth.