Dentalmatic Technologies Inc.

Orten S.a.

Guy Rolet

Michel Divet

Jean-Marc Perot

Jacques Sciandra

A method for producing a dental prosthesis includes computer modeling of a three-dimensional prosthetic cap based on an human implantation zone. The method first includes casting an impression of the implantation zone of the human body. Then, on the basis of the moulded impression, a digital three-dimensional representation (R ) of the implantation zone is made by sensing the implantation zone with a sensor. From this, a digital representation (R ) of the internal surface of the prosthesis is defined on the basis of the digital three-dimensional representation (R ) of the implantation zone. A digital three-dimensional representation (R ) of the external surface of the prosthesis is then defined on the basis of the surrounding parameters of the prosthesis and the digital three-dimensional representation (R ). Then, a digital three-dimensional representation (R ) of the external surface of the cap is defined on the basis of the external (R ) and internal (R ) surfaces of the prosthesis, taking into account the criteria of the mechanical and aesthetic characteristics which the cap must have. Based on this three-dimensional model, an actual prosthetic cap can be produced if the cap meets certain requirements.

Process for producing a dental prosthesis

Method for the correlation of three dimensional measurements obtained by at least one first (,) and one second (,) image capturing unit. The method comprises, for the calibration phase, the steps of: producing a calibrating ball (,) movably and rotatably mounted about an axis (,), successively and rotatingly shifting the calibrating ball (,) into the measuring positions which are visible to the acquisition units; measuring, for each of the measuring positions, the spherical cap seen by each of the image capturing units; determining, for each of the measuring positions, the center of the calibrating ball, to express the same reference frame in the first and second reference marks viewed by the first and second image capturing units respectively; calculating the matrix of the passage from the first reference mark to the second reference mark to correlate the measurements between the first and second optical image capturing units.

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Lyons, France

Guy Rolet