title: Evaluation of the shear bond strength of dental porcelain and the low magnetic susceptibility Zr-14Nb alloy.
abstract: The aim of this study was to investigate the bond strength of dental porcelain and the preheated Zr-14Nb alloy, and compare this strength with that of titanium. White oxide layers, which were predominantly composed of monoclinic zirconia, were formed on the preheated sample groups, and exhibited a greater roughness than the control samples. At the metal-ceramic interface, a greater Nb diffusion range was observed than in the control samples. The bond strengths of the samples subjected to 20min preheating treatment were the lowest (33.6 ± 3.2 MPa), which may be ascribed to the formation of a brittle thick oxide layer under excessive heat treatment. The samples subjected to this heat treatment for 5 min exhibited the highest mean bond strength (43.7 ± 5.9 MPa), which was significantly higher than that of titanium (35.3 ± 3.5 MPa). Thus, the Zr-14Nb alloy is a promising candidate for fixed dental prosthesis, as long as the appropriate treatment conditions are adopted.
authors: Removable Partial Prosthodontics, Oral Health Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-8549, Japan.
authors: Yuka
authors: Y
authors: Kajima
authors: Removable Partial Prosthodontics, Oral Health Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-8549, Japan. Electronic address: a.takaichi.rpro@tmd.ac.jp.
authors: Atsushi
authors: A
authors: Takaichi
authors: Fixed Prosthetic Engineering, School of Oral Health Care Sciences, Faculty of Dentistry, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-8549, Japan.
authors: Tohru
authors: T
authors: Yasue
authors: Metallic Biomaterials, Biomedical Materials, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, 2-3-10 Kanda-surugadai, Chiyoda-ku, Tokyo 101-0062, Japan.
authors: Hisashi
authors: H
authors: Doi
authors: Oral Biomaterials Engineering, Course of Oral Health Engineering, School of Oral Health Care Sciences, Faculty of Dentistry, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-8549, Japan.
authors: Hidekazu
authors: H
authors: Takahashi
authors: Metallic Biomaterials, Biomedical Materials, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, 2-3-10 Kanda-surugadai, Chiyoda-ku, Tokyo 101-0062, Japan.
authors: Takao
authors: T
authors: Hanawa
authors: Removable Partial Prosthodontics, Oral Health Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-8549, Japan.
authors: Noriyuki
authors: N
authors: Wakabayashi
mesh_terms: D000497:Alloys / Q000737:chemistry*; D003776:Dental Porcelain; D006358:Hot Temperature; D060328:Magnetic Phenomena; D009556:Niobium / Q000737:chemistry*; D033081:Shear Strength; D013499:Surface Properties; D015040:Zirconium / Q000737:chemistry*
chemical_list: D000497:Alloys; D009556:Niobium; D003776:Dental Porcelain; D015040:Zirconium
keywords: Dental porcelain; Fixed dental prostheses; Preheating treatment; Shear bond strength; Zr–Nb alloy