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The accuracy of a high-precision digitizer for CAD/CAM of crowns
M Persson1, M Andersson, B Bergman
1Nobelpharma Procera Co., Göteborg, Sweden.
The Journal of Prosthetic Dentistry
|September 1, 1995
Abstract:
An alternative method for manufacturing fixed prostheses that uses machine digitalization and a combination of milling and spark erosion has been developed. The digitizer used has a contact probe with a ball-shaped tip. This study evaluated the accuracy of the device and the transfer of data from the individual die to the computer. The dimensions of a square gauge as read by the machine were compared with the known dimensions of the object with a computer, which allowed determination of the accuracy of the digitalization. Procera machining and the implications for reliable prosthodontic treatment are discussed.