title: Effect of hydrofluoric acid etching on shear bond strength of an indirect resin composite to an adhesive cement.
abstract: This study evaluated the effect of 1% hydrofluoric acid (HF) treatment on the bonding of an adhesive cement (Panavia F 2.0) to an indirect resin composite (Estenia C&B). Pairs of composite disks (10 and 8 mm in diameter by 3 mm thickness) were prepared. Adhesive surfaces were pretreated with either airborne particle abrasion or HF etching before being soaked for 30 seconds, five minutes or 10 minutes, with or without application of silane coupling agent. Adhesive specimens were fabricated by cementing a pair of treated disks. Shear bond strength was determined before and after 50,000 times of thermocycling (4 and 60 degrees C). All data were statistically analyzed using two-way ANOVA and Bonferroni's test (a=0.05). Bond strength achieved with five minutes of HF etching (18.3+/-1.1 MPa) was significantly higher (P=0.0025) than that obtained with airborne particle abrasion followed by application of silane coupling agent (14.3+/-1.8 MPa) after thermocycling.
authors.affiliation: Department of Fixed Prosthetic Dentistry, Kagoshima University Graduate School of Medical and Dental Sciences, 8-35-1 Sakuragaoka, Kagoshima 890-8544, Japan. horisaya@denta.hal.kagoshima-u.ac.jp
authors.forename: Sayaka
authors.initials: S
authors.lastname: Hori
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Minami
authors.forename: Yoshito
authors.initials: Y
authors.lastname: Minesaki
authors.forename: Hideo
authors.initials: H
authors.lastname: Matsumura
authors.forename: Takuo
authors.initials: T
authors.lastname: Tanaka
mesh_terms: D000134:Acid Etching, Dental / Q000379:methods*; D000704:Analysis of Variance; D003188:Composite Resins / Q000737:chemistry*; D001840:Dental Bonding / Q000379:methods*; D003776:Dental Porcelain / Q000737:chemistry; D003799:Dental Stress Analysis; D017220:Dentin-Bonding Agents / Q000737:chemistry; D006858:Hydrofluoric Acid / Q000737:chemistry*; D008422:Materials Testing; D008689:Methacrylates / Q000737:chemistry; D011140:Polyurethanes / Q000737:chemistry; D019279:Resin Cements / Q000737:chemistry*; D033081:Shear Strength; D013499:Surface Properties
chemical_list: D003188:Composite Resins; D017220:Dentin-Bonding Agents; D008689:Methacrylates; C438843:Panavia-Fluoro; D011140:Polyurethanes; D019279:Resin Cements; C091839:urethanetrimethacrylate; D003776:Dental Porcelain; D006858:Hydrofluoric Acid