title: Effect of various surface preparations on bond strength of a gingiva-colored indirect composite to zirconia framework for implant-supported prostheses.
abstract: To evaluate the effects of various surface preparations on shear bond strength of a gingiva-colored indirect composite material and zirconia framework. Zirconia disks were prepared with one of nine surface treatments: hydrofluoric acid etching (HF), heating at 1,000°C for 10 min (HT), wet-grinding with 600- and 1500-grit SiC paper (SiC 600 and 1500), alumina-blasting at 0.1, 0.2, 0.4 and 0.6 MPa (AB 0.1, 0.2, 0.4, and 0.6), and no treatment (NT). An indirect composite material was bonded to zirconia. Shear bond strengths were measured. Bond strength was significantly higher in AB 0.2, 0.4, and 0.6 groups than in other groups at 0 and 20,000 thermocycles. Post-thermocycling bond strength was lower in NT, HF, and HT groups than in other groups. Alumina-blasting with 0.2 MPa or higher yielded sufficient durable bond strength between gingiva-colored indirect composite and zirconia frameworks. Hydrofluoric acid etching and heat treatment did not achieve durable bond strengths.
authors.affiliation: Department of Fixed Prosthodontics, Nihon University School of Dentistry.
authors.forename: Futoshi
authors.initials: F
authors.lastname: Komine
authors.forename: Mai
authors.initials: M
authors.lastname: Koizuka
authors.forename: Ryosuke
authors.initials: R
authors.lastname: Fushiki
authors.forename: Taro
authors.initials: T
authors.lastname: Iwasaki
authors.forename: Kei
authors.initials: K
authors.lastname: Kubochi
authors.forename: Hideo
authors.initials: H
authors.lastname: Matsumura
mesh_terms: D003116:Color; D003188:Composite Resins / Q000737:chemistry*; D001840:Dental Bonding; D045662:Dental Etching / Q000379:methods*; D019094:Dental Prosthesis, Implant-Supported; D003799:Dental Stress Analysis; D066298:In Vitro Techniques; D008422:Materials Testing; D058105:Polymerization; D013499:Surface Properties; D015040:Zirconium / Q000737:chemistry
chemical_list: D003188:Composite Resins; D015040:Zirconium; C028541:zirconium oxide