title: Influence of air-abrasion and subsequent heat treatment on bonding between zirconia framework material and indirect composites.
abstract: The purpose of this study was to evaluate the influence of air-abrasion and subsequent heat treatment on the shear bond strength of the bond between indirect composites and a zirconia material. Four surface preparations were employed; ground flat, then heated to regenerate the crystal phase (C); air-abraded with alumina for 10 s (S10), for 20 s (S20), and air-abraded for 10 s and heated (H). Disks were primed with Alloy Primer and bonded either with Estenia or with Gradia composite. XRD analysis suggested that the monoclinic zirconia content was increased by air-abrasion, and decreased by heating. The surface roughness of S10, S20 and H disks was similar. Nevertheless, H groups showed lower bond strengths than the S10 and S20 groups both before and after thermal cycling. Although alumina air-abrasion considerably enhanced bonding between zirconia and indirect composites, subsequent heat treatment had a negative effect on the durability of bond strength.
authors.affiliation: Department of Anatomy and Functional Restorations, Division of Oral Health Sciences, Hiroshima University Graduate School of Biomedical Sciences, 2-3 Kasumi 1-Chome, Minami-ku, Hiroshima, Japan. shimoe@hiroshima-u.ac.jp
authors.forename: Saiji
authors.initials: S
authors.lastname: Shimoe
authors.forename: Naomi
authors.initials: N
authors.lastname: Tanoue
authors.forename: Kenta
authors.initials: K
authors.lastname: Kusano
authors.forename: Masayuki
authors.initials: M
authors.lastname: Okazaki
authors.forename: Takahiro
authors.initials: T
authors.lastname: Satoda
mesh_terms: D000537:Aluminum Oxide / Q000737:chemistry; D017554:Carbon Compounds, Inorganic / Q000737:chemistry; D003188:Composite Resins / Q000737:chemistry*; D017076:Computer-Aided Design; D003461:Crystallography; D001840:Dental Bonding; D045662:Dental Etching / Q000379:methods*; D003764:Dental Materials / Q000737:chemistry*; D003799:Dental Stress Analysis / Q000295:instrumentation; D006358:Hot Temperature; D006801:Humans; D008422:Materials Testing; D008689:Methacrylates / Q000737:chemistry; D008855:Microscopy, Electron, Scanning; D011140:Polyurethanes / Q000737:chemistry; D033081:Shear Strength; D017655:Silicon Compounds / Q000737:chemistry; D013314:Stress, Mechanical; D013499:Surface Properties; D013696:Temperature; D013871:Thiones / Q000737:chemistry; D013997:Time Factors; D014867:Water / Q000737:chemistry; D014961:X-Ray Diffraction; D015019:Yttrium / Q000737:chemistry; D015040:Zirconium / Q000737:chemistry*
chemical_list: C521707:Alloy Primer; D017554:Carbon Compounds, Inorganic; D003188:Composite Resins; D003764:Dental Materials; C470230:Gradia; D008689:Methacrylates; D011140:Polyurethanes; D017655:Silicon Compounds; D013871:Thiones; C091839:urethanetrimethacrylate; C499362:yttria stabilized tetragonal zirconia; D014867:Water; D015019:Yttrium; D015040:Zirconium; D000537:Aluminum Oxide; C028541:zirconium oxide; C022088:silicon carbide