title: A comparative study of two CEREC software systems in evaluating manufacturing time and accuracy of restorations.
abstract: This study compared the manufacturing times and the accuracy of proximal and occlusal contacts on restorations produced by two different versions of CEREC 3 software, COS and 3D. Fourteen casts containing pre-existing inlay and onlay preparations of premolars and molars were mounted on articulators. A bite registration was made in maximum intercuspation. Optical impressions of the preparation and the bite registration were made. The Wilcoxon signed rank test was applied for a statistical analysis of time expended in the different design and manufacturing steps of both software versions. The chi-square test was applied for the statistical analysis of proximal and occlusal contacts.
authors.affiliation: Policlinic of Prosthetic Dentistry, University of Erlangen-Nuremberg, Erlangen, Germany.
authors.forename: Sven M
authors.initials: SM
authors.lastname: Reich
authors.forename: Ivy D
authors.initials: ID
authors.lastname: Peltz
authors.forename: Manfred
authors.initials: M
authors.lastname: Wichmann
authors.forename: Denise J
authors.initials: DJ
authors.lastname: Estafan
mesh_terms: D002516:Ceramics / Q000627:therapeutic use*; D017076:Computer-Aided Design; D003766:Dental Occlusion; D003793:Dental Restoration, Permanent / Q000379:methods; D006801:Humans; D007091:Image Processing, Computer-Assisted; D012984:Software; D013997:Time Factors
chemical_list: C074543:Cerec