title: Cement thickness and microleakage under metal-ceramic restorations with a facial butted margin: an in vivo investigation.
abstract: Ten metal-ceramic restorations with buccal porcelain butt margins and palatal metal beveled margins were fabricated for periodontally hopeless teeth. After cementation, the experimental crowns remained in the oral environment for 3 to 6 months; the teeth were then extracted and used for microscopic and microleakage evaluation. All ten crowns showed at least a small amount of microleakage, but adaptation of beveled margins proved to be superior to that of shoulder porcelain margins.
authors.forename: M C
authors.initials: MC
authors.lastname: Cagidiaco
authors.forename: M
authors.initials: M
authors.lastname: Ferrari
authors.forename: E
authors.initials: E
authors.lastname: Bertelli
authors.forename: P N
authors.initials: PN
authors.lastname: Mason
authors.forename: J
authors.initials: J
authors.lastname: Russo
mesh_terms: D002484:Cementation; D003442:Crowns; D001840:Dental Bonding / Q000379:methods*; D003738:Dental Cements; D003763:Dental Leakage; D003776:Dental Porcelain; D006801:Humans; D016876:Metal Ceramic Alloys; D008855:Microscopy, Electron, Scanning
chemical_list: D003738:Dental Cements; D016876:Metal Ceramic Alloys; D003776:Dental Porcelain