title: A comparison of the marginal fit of In-Ceram, IPS Empress, and Procera crowns.
abstract: The in vitro marginal fit of three all-ceramic crown systems (In-Ceram, Procera, and IPS Empress) was compared. All crown systems were significantly different from each other at P = 0.05. In-Ceram exhibited the greatest marginal discrepancy (161 microns), followed by Procera (83 microns), and IPS Empress (63 microns). There were no significant differences among the various stages of the crown fabrication: core fabrication, porcelain veneering, and glazing. The facial and lingual margins exhibited significantly larger marginal discrepancies than the mesial and distal margins.
authors.affiliation: Northwestern University Dental School, Chicago, Illinois 60611, USA.
authors.forename: F
authors.initials: F
authors.lastname: Sulaiman
authors.forename: J
authors.initials: J
authors.lastname: Chai
authors.forename: L M
authors.initials: LM
authors.lastname: Jameson
authors.forename: W T
authors.initials: WT
authors.lastname: Wozniak
mesh_terms: D000537:Aluminum Oxide / Q000592:standards*; D000538:Aluminum Silicates / Q000592:standards*; D000704:Analysis of Variance; D003442:Crowns / Q000592:standards*; D018772:Dental Marginal Adaptation / Q000592:standards*; D003776:Dental Porcelain / Q000592:standards*; D003801:Dental Veneers / Q000592:standards; D006801:Humans; D007180:Incisor; D008422:Materials Testing / Q000379:methods / Q000706:statistics & numerical data; D008437:Maxilla; D016876:Metal Ceramic Alloys / Q000592:standards*; D014025:Titanium / Q000592:standards*
chemical_list: D000538:Aluminum Silicates; C075815:IPS-Empress ceramic; D016876:Metal Ceramic Alloys; C077451:Procera; D003776:Dental Porcelain; C070870:In-Ceram; D014025:Titanium; D000537:Aluminum Oxide