title: Shear bond strength between an indirect composite veneering material and zirconia ceramics after thermocycling.
abstract: The present study evaluated the shear bond strength between an indirect composite material and zirconium dioxide (zirconia) ceramics after thermocycling. A total of 80 zirconia (Katana) discs were divided into five groups and primed with one of following agents: All Bond 2 Primer B (ABB), Alloy Primer (ALP), AZ Primer (AZP), Estenia Opaque Primer (EOP), and Porcelain Liner M Liquid A (PLA). An indirect composite material (Estenia C&B) was then bonded to the primed zirconia. One-half of the specimens (n = 8) in each group were stored in distilled water at 37 degrees C for 24 h, and the remaining eight specimens were thermocycled 5,000 times before shear bond strength testing. Mean bond strengths before thermocycling varied from 10.1 to 15.6 MPa; bond strengths after thermocycling ranged from 4.3 to 17.6 MPa. The ALP group had the highest strengths after thermocycling; there were no significant differences among the PLA, AZP, and EOP groups. The bond strength values for PLA, AZP, EOP, and ALP did not decrease with thermocycling. The application of an acidic functional monomer containing carboxylic anhydride (4-META), phosphonic acid (6-MHPA), or phosphate monomer (MDP) provided durable bond strength between Estenia C&B indirect composite and Katana zirconia.
authors.affiliation: Department of Fixed Prosthodontics, Nihon University School of Dentistry, Chiyoda-ku, Tokyo, Japan. komine@dent.nihon-u.ac.jp
authors.forename: Futoshi
authors.initials: F
authors.lastname: Komine
authors.forename: Kazuhisa
authors.initials: K
authors.lastname: Kobayashi
authors.forename: Ayako
authors.initials: A
authors.lastname: Saito
authors.forename: Ryosuke
authors.initials: R
authors.lastname: Fushiki
authors.forename: Hiroyasu
authors.initials: H
authors.lastname: Koizumi
authors.forename: Hideo
authors.initials: H
authors.lastname: Matsumura
mesh_terms: D003188:Composite Resins; D001840:Dental Bonding; D003776:Dental Porcelain; D003799:Dental Stress Analysis; D003801:Dental Veneers; D008422:Materials Testing; D008689:Methacrylates; D009943:Organophosphorus Compounds; D010746:Phosphonoacetic Acid / Q000031:analogs & derivatives; D011897:Random Allocation; D019279:Resin Cements / Q000737:chemistry*; D033081:Shear Strength; D015040:Zirconium
chemical_list: C546895:6-methacryloyloxyhexyl phosphonoacetate; D003188:Composite Resins; C074230:MDP adhesion promoting monomer; D008689:Methacrylates; D009943:Organophosphorus Compounds; D019279:Resin Cements; D003776:Dental Porcelain; C034139:4-methacryloxyethyltrimellitic acid anhydride; D015040:Zirconium; D010746:Phosphonoacetic Acid; C028541:zirconium oxide