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A new method for generating ceramic restorations: a CAD-CAM system.

K F Leinfelder·B P Isenberg·M E Essig
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Abstract

The CAD-CAM CEREC system is a small, complex unit developed for electronically designing and milling ceramic restorations. The system makes it possible to generate a restoration without taking impressions, developing temporary prostheses, and without laboratory assistance. The entire restorative procedure is performed in one appointment. Basic features include the following: the cavity preparation is scanned stereo-photogrammetrically, using a three-dimensional miniature video camera; the small microprocessor unit stores the three-dimensional pattern depicted on the screen; the video display serves as a format for the necessary manual construction via an electrical signal; the microprocessor develops the final three-dimensional restoration from the two-dimensional construction; the processing unit automatically deletes data beyond the margins of the preparation; the electronic information is transferred numerically to the miniature three-axis milling device; driven by a water turbine unit, the milling device generates a precision-fitting restoration from a standard ceramic block; the entire process of electronic designing and subsequent milling of a ceramic restoration requires approximately 10 to 15 minutes.

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Computer SimulationComputer SystemsDental EquipmentDental PorcelainDental Restoration, PermanentHumansImage Processing, Computer-AssistedJournal Article

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BibTeXRIS

K F Leinfelder, B P Isenberg, M E Essig. 1989. A new method for generating ceramic restorations: a CAD-CAM system.. https://doi.org/10.14219/jada.archive.1989.0156

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