Effect of surface pre-treatment on durability of resin-based cements bonded to titanium

Tsuchimoto, Youhei; Yoshida, Yasuhiro; Takeuchi, Maho; Mine, Atsushi; Yatani, Hirofumi; Tagawa, Yoh-ichi; Meerbeek, Bart Van; Suzuki, Kazuomi; Kuboki, Takuo

doi:10.1016/j.dental.2005.08.002

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Volume 22, Issue 6 , Pages 545-552, June 2006

Effect of surface pre-treatment on durability of resin-based cements bonded to titanium

Youhei Tsuchimoto
- Department of Oral and Maxillofacial Rehabilitation, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Science, Okayama, Japan
Yasuhiro Yoshida
- Department of Biomaterials, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Science, Okayama, Japan
- Research Center for Biomedical Engineering, Okayama University, Okayama, Japan
- Corresponding author. Address: Department of Biomaterials, Okayama University Graduate School of Medicine and Dentistry, 2-5-1 Shikata-cho, Okayama 700-8525, Japan. Tel.: +81 86 235 6666; fax: +81 86 235 6669.
Maho Takeuchi
- Division of Cervico-Gnathostomatology, Department of Advanced Prosthodontics, Programs for Applied Biomedicine, Hiroshima University Graduate School of Biomaterials Science, Hiroshima, Japan
Atsushi Mine
- Department of Oral and Maxillofacial Rehabilitation, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Science, Okayama, Japan
Hirofumi Yatani
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry, Osaka, Japan
Yoh-ichi Tagawa
- Department of Biomolecular Engineering, Graduate School of Bioscience and Biotechonology, Tokyo Institute of Technology, Yokohama, Japan
Bart Van Meerbeek
- Leuven BIOMAT Research Cluster, Department of Conservative Dentistry, Oral Pathology and Maxillo-Facial Surgery, School of Dentistry, Catholic University of Leuven, Leuven, Belgium
Kazuomi Suzuki
- Department of Biomaterials, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Science, Okayama, Japan
- Research Center for Biomedical Engineering, Okayama University, Okayama, Japan
Takuo Kuboki
- Department of Oral and Maxillofacial Rehabilitation, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Science, Okayama, Japan

Received 27 April 2005; accepted 10 August 2005.

Summary

Objectives

Titanium has in recent years become a material of great opportunities in dentistry and orthopedics. In this study, we searched for a method to effectively pre-treat titanium as part of an adhesive luting and/or resin-veneering procedure.

Methods

Ti plates were treated with two different solutions of hydrochloric acid (0.1, 1N), 37wt% phosphoric acid or kept untreated (control). The tensile bond strength of the composite cement (Panavia Fluoro Cement, Kuraray) to the untreated and pre-treated Ti plates was determined without and after 20,000 thermo-cycles. XPS was used to chemically analyze the effect of the three Ti pre-treatments, as well as the interaction of 10-methacryloxydecyl dihydrogen phosphate (10-MDP; functional monomer of Panavia Fluoro Cement) with Ti treated with 1N HCl.

Results

Although no significant difference in immediate tensile bond strength was measured, thermo-cycling significantly decreased the bond strength of all experimental groups except for Ti treated with 1N HCl. No difference in surface roughness was found between untreated and treated Ti. XPS demonstrated that HCl effectively decontaminated Ti in a dose-dependent manner, while H₃PO₄ was strongly adsorbed on the Ti surface. While the latter potentially inhibits adsorption of the phosphoric groups of the functional monomer 10-MDP, Ti pre-treated with 1N HCl improved the adsorption of 10-MDP as compared to untreated Ti.