International Journal of Computerized Dentistry, 01/2003

The accuracy, reliability, and reproducibility of the virtual articulator as applied in functional diagnostics are examined. Its potential in planning and simulating orthodontic treatment is also explored. Keywords: virtual articulator, functional diagnostics, temporomandibular joint

Es wird ein Lern- und Diagnoseprogramm zur computerassistierten Funktionsanalyse des craniomandibulären Systems (CMS) vorgestellt. Entwicklung und Funktionalität der Programmmodule "Anatomie und Strukturphysiologie des CMS", "Lernprogramm Manuelle Funktionsanalyse des CMS" sowie "Computerassistierte Funktionsdiagnostik des CMS" werden beschrieben. Der zweite Teil des Artikels befasst sich mit den Erfahrungen im praktischen Einsatz der Software am Behandlungsplatz. Keywords: Manuelle Funktionsanalyse, Lernsoftware, Computerassistierte Funktionsdiagnostik, Standardisierung

The ROSY robot system has been developed to simulate movements of the jaw under stepper motor control. The areas of indication comprise functional diagnostics and production of designed occlusal splints. Moreover, this device can also be extended for use in other areas. The computer-assisted design of OR templates has become possible. The simulator also permits the production of implant-borne restorations with optimum implant loading. Keywords: dental medicine, function, simulator, robot, computer, mandibular movement

Inlays are still by far the favorite restoration of the dentist using Cerec. In the course of the further development of the Cerec unit, the endeavor to simplify the design component in the production of restorations from generation to generation stood in the foreground. A common feature of all previous design models is an abstract line framework made of initially monochrome green, then later colored construction lines, which should provide the dentist assistance by reference to x,y coordinates in order to not only image the restoration to be milled but also to detect any design errors on time, in order not to be confronted with an unsatisfactory result at the end of the milling process. Keywords: Cerec 3D, Inlay design, Design systematics

Cerec (Sirona) technology has been continuously evolving since the introduction of Cerec 1 in 1985. Improvements and hardware and software have contributed to increased ease of use and improved fit of the milled restorations. The commitment of Sirona to technological improvement of the Cerec product line has been evident, most recently with the introduction of Cerec 3 in 2000. Keywords: Cerec 3D, Crown construction, CAD/CAM software

The practical use of the Function program mode in Cerec 3D is demonstrated in the present patient case. The author performed almost all restorations with the previous Cerec 3 software using the Correlation mode. This has not changed with the new 3D program. Correlation is now used almost always jointly with Function. Whereas the Function mode in Cerec 3 was still an independent option, Function is now selected automatically by the program when optical impressions of the antagonist are taken. Keywords: Cerec 3D, correlation, function, registration, antagonist

The new Cerec 3D design software for inlays and partial and full crowns simplifies work when producing several restorations in one session. Quite significant progress has been achieved, in that the entire row of teeth of a quadrant can be acquired completely and displayed by successively overlapping optical impressions. The digital working model of a quadrant in which all preparations are acquired is the result. The restorations can be designed individually and inserted virtually. Thanks to virtual insertion, the proximal contacts to neighboring restorations can be designed perfectly and all restorations finally designed, milled, and inserted in one sitting. This method provides a significant rationalization effect. Keywords: 3D design, chairside quadrant restoration, work simplification

The veneer enthusiast among Cerec users finds her- or himself confronted with good news and bad news in the Cerec 3D program. The long required provision of for the veneer program as well is now finally reality - this is the good news. On the other hand in the present software version is the sole available design method - this is the bad news. The clinical use of the Cerec 3D veneer program is described and explained in the following article. Whether and to what degree limitation to restricts the user in his or her design possibilities are also discussed. Keywords: 3D design, chairside production, Cerec veneers

On the one hand, all-ceramic primary telescopic dentures serve to satisfy the growing esthetic needs of older patients, and on the other hand guarantee good adhesive stability. With the aid of the Cerec inLab system, primary telescopic crowns made of Vita In-Ceram infiltration ceramic can be designed and milled after previous conventional determination of the over all insertion direction. The raw crowns gained in this way then require only minor improvement. The secondary parts are produced with the aid of electroforming. These are adhesively bonded to the tertiary structure. The special feature of adhesive bonding of the primary telescopic crowns requires uncompromisingly good cooperation between dentist and laboratory. Keywords: Double crowns, allceramic primary elements, Cerec inLab, CAD/CAM software