Abstract: A process for determining 3-D data of at least one prepared jaw area, such as a prepared tooth stump, by mechanically scanning the jaw area and digitizing the measured values determined during the scanning. The jaw area is prepared with a dental instrument having positions which are optically measured during the preparation, and the 3-D data is determined from the positions of the dental instrument that are associated with the prepared jaw area.

Abstract: A process for determining 3-D data of at least one prepared jaw area, such as a prepared tooth stump, by mechanically scanning the jaw area and digitizing the measured values determined during the scanning. The jaw area is prepared with a dental instrument having positions which are optically measured during the preparation, and the 3-D data is determined from the positions of the dental instrument that are associated with the prepared jaw area.

Abstract: The invention relates to a method and an apparatus for a non-contact, three-dimensional determination of the shape of a dental technology object (10) whereby, to determine the space coordinates of the object's surface points to be measured, a thin stripe of light projected onto the object is measured by at least two matrix cameras (32, 34) to determine two space coordinates (Z- Y-coordinate) of a coordinate system, and the third space coordinate (X coordinate) is ascertained by determining the position of the object arranged on a measuring table (22) which is rotatable about an axis of rotation (20).