title: Shear bond strengths of two resin-modified glass ionomer cements to porcelain.
abstract: Shear bond strength of a composite resin adhesive (Concise) and two resin-modified glass ionomer cements (Fuji Ortho LC and Geristore) bonded to porcelain surface was tested. Orthodontic brackets were bonded to 120 porcelain disks (Finesse) etched with 9% HF. Samples were divided into six groups: (1) Concise, (2) Concise/silane, (3) Geristore, (4) Geristore/silane, (5) Fuji, (6) Fuji/silane. No statistical difference in mean shear bond strength was found between silanated Concise (15.8 MPa), Geristore (19.4 MPa), and Fuji (18.5 MPa) groups, which were significantly higher than nonsilanated groups. Porcelain fracture was observed in all silanated groups and nonsilanated Geristore group. We conclude that (1) silane increases bond strength to porcelain significantly for composite resin and resin-modified glass ionomer cement, (2) Concise, Geristore, and Fuji Ortho LC provide comparable shear bond strength to porcelain.
authors.affiliation: Department of Orthodontics, School of Dental Medicine, University of Pennsylvania, PA 19104-6003, USA. chunc@pobox.upenn.edu
authors.forename: C H
authors.initials: CH
authors.lastname: Chung
authors.forename: E J
authors.initials: EJ
authors.lastname: Brendlinger
authors.forename: D L
authors.initials: DL
authors.lastname: Brendlinger
authors.forename: V
authors.initials: V
authors.lastname: Bernal
authors.forename: F K
authors.initials: FK
authors.lastname: Mante
mesh_terms: D000180:Acrylic Resins / Q000737:chemistry*; D000538:Aluminum Silicates / Q000737:chemistry*; D000704:Analysis of Variance; D017438:Bisphenol A-Glycidyl Methacrylate / Q000737:chemistry*; D003188:Composite Resins / Q000737:chemistry*; D001840:Dental Bonding / Q000706:statistics & numerical data; D003776:Dental Porcelain / Q000737:chemistry*; D005899:Glass Ionomer Cements / Q000737:chemistry*; D008422:Materials Testing / Q000379:methods / Q000706:statistics & numerical data; D016910:Orthodontic Brackets; D017680:Potassium Compounds / Q000737:chemistry*; D011897:Random Allocation; D012117:Resins, Synthetic / Q000737:chemistry*; D013314:Stress, Mechanical; D013499:Surface Properties
chemical_list: D000180:Acrylic Resins; D000538:Aluminum Silicates; D003188:Composite Resins; C095451:Fuji Ortho LC; C074933:Geristore; D005899:Glass Ionomer Cements; D017680:Potassium Compounds; D012117:Resins, Synthetic; D003776:Dental Porcelain; C016447:feldspar; D017438:Bisphenol A-Glycidyl Methacrylate; C037884:finesse