title: Acid etching of titanium for bonding with veneering composite resins.
abstract: Commercially pure titanium (cpTi) was etched using three concentrated acids: 18% HCl, 43% H3PO4, and 48% H2SO4. The bond strengths between five types of veneering composite resin and eight cpTi treatments (involving combinations of sandblasting, acid etching in 48% H2SO4, and vacuum firing) were determined before and after 10,000 and 20,000 thermal cycles. There were no significant differences in the bond strength of resin to cpTi after etching in 48% H2SO4 at 90 degrees C for 15 minutes, at 60 degrees C for 15, 30, or 60 minutes, and after sandblasting with and without vacuum firing (p > 0.05); moreover, these treatments yielded the highest values. As for vacuum firing, it had no significant effect on resin bond strength to cpTi before or after 10,000 and 20,000 thermal cycles. We therefore concluded that acid etching in concentrated H2SO4 is a simple and effective surface modification method of titanium for bonding to veneering composite resins.
authors.affiliation: Department of Biomaterials Science, Graduate School of Medical and Dental Sciences, Kagoshima University, 8-35-1, Sakuragaoka, Kagoshima 890-8544 Kagoshima, Japan. sban@denta.hal.kagoshima-u.ac.jp
authors.forename: Seiji
authors.initials: S
authors.lastname: Ban
authors.forename: Toshio
authors.initials: T
authors.lastname: Taniki
authors.forename: Hideo
authors.initials: H
authors.lastname: Sato
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Kono
authors.forename: Yukari
authors.initials: Y
authors.lastname: Iwaya
authors.forename: Motoharu
authors.initials: M
authors.lastname: Miyamoto
mesh_terms: D000134:Acid Etching, Dental / Q000379:methods*; D000704:Analysis of Variance; D003188:Composite Resins; D001840:Dental Bonding; D003799:Dental Stress Analysis; D003801:Dental Veneers; D006851:Hydrochloric Acid; D008422:Materials Testing; D010756:Phosphoric Acids; D019279:Resin Cements; D033081:Shear Strength; D013464:Sulfuric Acids; D013499:Surface Properties; D014025:Titanium
chemical_list: D003188:Composite Resins; D010756:Phosphoric Acids; D019279:Resin Cements; D013464:Sulfuric Acids; D014025:Titanium; C030242:phosphoric acid; C033158:sulfuric acid; D006851:Hydrochloric Acid