title: Radiopacity of direct ceramic inlay restoratives.
abstract: The radiopacity of two new ceramic restorative materials (Dicor MGC and Cerec Vita Blocks) manufactured for use in producing direct inlays with the 'Cerec CAD-CAM' system was determined. Dicor MGC had a radiopacity significantly greater than that of enamel, while Cerec Vita Blocks had a radiopacity significantly less than that of dentine. It is concluded that Dicor MGC has a radiopacity suitable for its use as an intracoronal restorative for posterior teeth. The low radiopacity of Cerec Vita Blocks means that the use of radiopaque luting cement is essential to permit detection of secondary caries around restorations of this material. Furthermore, marginal overhangs around restorations made from Cerec Vita Blocks will be difficult to detect radiographically.
authors.affiliation: Restorative Department, Faculty of Dentistry, University of Toronto, Ontario, Canada.
authors.forename: O M
authors.initials: OM
authors.lastname: el-Mowafy
authors.forename: J W
authors.initials: JW
authors.lastname: Brown
authors.forename: D
authors.initials: D
authors.lastname: McComb
mesh_terms: D000704:Analysis of Variance; D002516:Ceramics / Q000737:chemistry*; D003188:Composite Resins / Q000737:chemistry; D003776:Dental Porcelain / Q000737:chemistry; D006801:Humans; D007284:Inlays; D008027:Light; D010783:Photometry
chemical_list: D003188:Composite Resins; C047475:Dicor ceramic; D003776:Dental Porcelain; C074543:Cerec