title: Chairside computer-generated ceramic restorations: the Cerec third generation improvements.
abstract: Cerec chairside computer-generated ceramic restorations have well passed a five-year clinical observation period with convincing clinical success. The new system COS 2.1 allows an essentially automatic design of inlays, the construction of 3/4 and 4/5 cusp protection onlays, and individually-shaped aesthetic laminate veneers. The new E-drive grinding increases the machining capacity by factor 3 to 4, reduces edge roughness by 50%, and doubles machining precision. Cementation gap width at the cervical margin is 37-48 microns in normal-depth preparations and 54-76 microns in deep cavities. It is the purpose of this article to review the third generation improvements of this method.
authors.affiliation: Dental Institute, University of Zurich, Switzerland.
authors.forename: W H
authors.initials: WH
authors.lastname: Mörmann
mesh_terms: D000328:Adult; D002516:Ceramics; D017076:Computer-Aided Design; D003793:Dental Restoration, Permanent / Q000379:methods; D003801:Dental Veneers; D005260:Female; D006801:Humans; D007284:Inlays
chemical_list: C074543:Cerec