title: The accuracy of the CAD system using intraoral and extraoral scanners for designing of fixed dental prostheses.
abstract: The accuracy of prostheses affects clinical success and is, in turn, affected by the accuracy of the scanner and CAD programs. Thus, their accuracy is important. The first aim of this study was to evaluate the accuracy of an intraoral scanner with active triangulation (Cerec Omnicam), an intraoral scanner with a confocal laser (3Shape Trios), and an extraoral scanner with active triangulation (D810). The second aim of this study was to compare the accuracy of the digital crowns designed with two different scanner/CAD combinations. The accuracy of the intraoral scanners and extraoral scanner was clinically acceptable. Marginal and internal fit of the digital crowns fabricated using the intraoral scanner and CAD programs were inferior to those fabricated using the extraoral scanner and CAD programs.
authors.affiliation: Department of Crown and Bridge, School of Life Dentistry at Tokyo, The Nippon Dental University.
authors.forename: Sakura
authors.initials: S
authors.lastname: Shimizu
authors.affiliation: Department of Crown and Bridge, School of Life Dentistry at Tokyo, The Nippon Dental University.
authors.forename: Akikazu
authors.initials: A
authors.lastname: Shinya
authors.affiliation: Department of Crown and Bridge, School of Life Dentistry at Tokyo, The Nippon Dental University.
authors.forename: Soichi
authors.initials: S
authors.lastname: Kuroda
authors.affiliation: Department of Crown and Bridge, School of Life Dentistry at Tokyo, The Nippon Dental University.
authors.forename: Harunori
authors.initials: H
authors.lastname: Gomi
mesh_terms: D003442:Crowns; D003761:Dental Impression Technique; D017266:Dental Prosthesis; D007834:Lasers
keywords: Accuracy; CAD software; CAD/CAM; Extraoral scanner; Intraoral scanner