Material for a dental prosthesis, method and device for determining the shape of a remaining tooth area to be provided with a dental prosthesis, method and arrangement for producing a dental prosthesis and use of the arrangement

A device for accurately determining the shape of a duplicate to be used for the preparation of a dental prosthesis comprising:

• a clamping device for the duplicate and a clamping device for sections derived from the duplicate;
• a sensor device for determining the shape of both the duplicate and the duplicate sections, wherein said clamping devices and said sensor device are movable in relation to each other;
• and,
• a memory unit for storing the data determined from the sensor device.

A method for producing a dental prosthesis comprising the steps of:

• creating a duplicate of the tooth area on which the dental prosthesis is to be placed;
• determining the shape of a remaining tooth area to be provided with said dental prosthesis by scanning the shape of the duplicate;
• storing the determined data from the duplicate as digital data;
• producing the dental prosthesis on the basis of the stored digital data by machining a blank.

An apparatus for producing a dental prosthesis comprising:

• a shape determination device for determining the shape of a duplicate of remaining tooth areas to be provided with said dental prostheses;
• a memory unit for storing data reflecting the shape of said duplicate in the form of digital data;
• a production machine for producing the dental prosthesis from a blank based upon said digitally stored data;
• and
• a control unit for controlling the production machine using said digitally stored data.