title: [How precise is the optical Cerec impression?].
abstract: The purpose of this investigation was to evaluate the precision of optical impressio obtained with the Cerec-device. Cerec provides a linear correlation between z-data and altitude (r = 1), one bit representing 49 microns. Repeated measurements deliver pixel-z-data within a range of +/- 49 microns and surfaceaverages (484 pixel) within +/- 5 microns. Deviations occur near areas with parallel orientation to the direction of measurement.
authors.affiliation: Poliklinik für Zahnerhaltung und Parodontologie der Universität München.
authors.forename: C
authors.initials: C
authors.lastname: Benz
authors.forename: P
authors.initials: P
authors.lastname: Schwarz
mesh_terms: D002516:Ceramics; D006801:Humans; D007284:Inlays; D015203:Reproducibility of Results; D013813:Therapy, Computer-Assisted
chemical_list: C074543:Cerec
vernacular_title: Wie genau ist der optische Cerec-Abdruck?