[How precise is the optical Cerec impression?].
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.
Benz
C
C
Poliklinik für Zahnerhaltung und Parodontologie der Universität München.
Schwarz
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P
D002516:Ceramics; D006801:Humans; D007284:Inlays; D015203:Reproducibility of Results; D013813:Therapy, Computer-Assisted
C074543:Cerec
Wie genau ist der optische Cerec-Abdruck?