title: Radiopacity of different resin-based and conventional luting cements compared to human and bovine teeth.
abstract: This study evaluated the radiopacity of different resin-based luting materials and compared the results to human and bovine dental hard tissues. Disc specimens (N=130, n=10 per group) (diameter: 6 mm, thickness: 1 mm) were prepared from 10 resin-based and 3 conventional luting cements. Human canine dentin (n=10), bovine enamel (n=10), bovine dentin (n=10) and Aluminium (Al) step wedge were used as references. The optical density values of each material were measured from radiographic images using a transmission densitometer. Al step wedge thickness and optical density values were plotted and equivalent Al thickness values were determined for radiopacity measurements of each material. The radiopacity values of conventional cements and two resin luting materials (Rely X Unicem and Variolink II), were significantly higher than that of bovine enamel that could be preferred for restorations cemented on enamel. Since all examined resin-based luting materials showed radiopacity values equivalent to or greater than that of human and bovine dentin, they could be considered suitable for the restorations cemented on dentin.
authors.affiliation: Dumlupinar University, Faculty of Dentistry, Tavsanli Yolu 10. km, 43270 Kutahya, Turkey. gurelp@gmail.com
authors.forename: Gürel
authors.initials: G
authors.lastname: Pekkan
authors.forename: Mutlu
authors.initials: M
authors.lastname: Ozcan
mesh_terms: D000535:Aluminum / Q000737:chemistry; D000818:Animals; D017438:Bisphenol A-Glycidyl Methacrylate / Q000737:chemistry; D002417:Cattle; D003287:Contrast Media / Q000737:chemistry*; D003481:Cuspid / Q000000981:diagnostic imaging; D003720:Densitometry / Q000295:instrumentation; D003738:Dental Cements / Q000737:chemistry*; D003743:Dental Enamel / Q000000981:diagnostic imaging*; D003804:Dentin / Q000000981:diagnostic imaging*; D017220:Dentin-Bonding Agents / Q000737:chemistry; D005899:Glass Ionomer Cements / Q000737:chemistry; D006801:Humans; D008277:Magnesium Oxide / Q000737:chemistry; D008689:Methacrylates / Q000737:chemistry; D011076:Polycarboxylate Cement / Q000737:chemistry; D011092:Polyethylene Glycols / Q000737:chemistry; D011109:Polymethacrylic Acids / Q000737:chemistry; D011859:Radiography; D019279:Resin Cements / Q000737:chemistry*; D015034:Zinc Oxide / Q000737:chemistry; D015036:Zinc Phosphate Cement / Q000737:chemistry
chemical_list: D003287:Contrast Media; D003738:Dental Cements; D017220:Dentin-Bonding Agents; C431350:Duo-Link; D005899:Glass Ionomer Cements; D008689:Methacrylates; C433206:Nexus; C438843:Panavia-Fluoro; D011076:Polycarboxylate Cement; D011109:Polymethacrylic Acids; C483701:Rely X Unicem; C462240:RelyX ARC; D019279:Resin Cements; C091744:Panavia TC; C103502:Variolink; D008277:Magnesium Oxide; D011092:Polyethylene Glycols; D017438:Bisphenol A-Glycidyl Methacrylate; D015036:Zinc Phosphate Cement; C040235:Ketac-cem; D000535:Aluminum; D015034:Zinc Oxide