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CEREC
CEREC or Cerec (Chairside Economical Restoration of Esthetic Ceramics, or CEramic REConstruction)〔W. H. Mörmann: ''Keramikinlay – Die Seitenzahnfüllung der Zukunft.'' Vortrag am 30. März 1985, Karlsruhe, „25 Jahre Akademie für Zahnärztliche Fortbildung, Karlsruhe“. 4. Internationales Quintessenz-Symposium 1985〕〔W. H. Mörmann et al.: ''Marginale Adaptation von adhäsiven Porzellaninlays in vitro.'' Schweiz Mschr Zahnmed 1985; 95: S. 1118–1129〕 is a method of CAD/CAM dentistry developed by W. Mörmann and M. Brandestini at the University of Zurich in 1980 for creating dental restorations. Using CAD/CAM (computer-aided design and computer-aided manufacturing), this process allows dentists to construct, produce, and insert individual ceramic restorations directly at the point of treatment (chairside) in a single appointment,〔T. Otto, D. Schneider: ''Long-term clinical results of chairside Cerec CAD/CAM inlays and onlays: a case series.'' Int J Prosthodont, 2008. 21(1): S. 53-9〕 rather than over multiple appointments with labside work in between. The first applications were successfully carried out on patients in 1985.〔W.H. Mörmann: ''Innovationen bei ästhetischen Restaurationen im Seitenzahngebiet (Keramik): Computergestützte Systeme.'' Dtsch Zahnärztl Z 1988; 43: S. 900-903〕 The Cerec name is also a brand name of the Sirona companies (Sirona Australia, Sirona Germany, Sirona USA, and others), because Sirona grew out of the exclusive licensing of the system by Siemens.
==General==
CAD/CAM dentistry involves a digital impression from one or more scans (using visible light scanning, digital radiographs, CT scans, or other methods), designing the restoration on the computer (computer-aided design, leading to a 3D model), and manufacturing the restoration (computer-aided manufacturing, whether by CNC milling, 3D printing, or other means). In order to carry all of these steps out in the dentist’s office – chairside – the dentist requires an image acquisition unit with an intraoral camera, the corresponding designing software, and a milling machine or a printer. If the dentist does not have a milling unit in their office, they can send the data in a digital file to the dental laboratory via an online portal. The lab designs and manufactures the restorations according to the dentist's prescription and then sends the finished restorations back to the dentist’s office.
Around 38,000 dentists worldwide use the CEREC method and thus produce some 6.9 million restorations each year (as of October 2013).
The article CEREC CAD/CAM in Dentistry original dissertation Data capture stabilising device for the CEREC CAD/CAM chairside camera fully explains all pros and cons of the system and is detailed in (materials, fit, software, hardware etc).
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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