Sawase T, Hai K, Yoshida K, Baba K, Hatada R, Atsuta M
Department of Crown and Bridge Prosthodontics, Nagasaki University School of Dentistry, Japan.
J Dent. 1998 Mar;26(2):119-24. doi: 10.1016/s0300-5712(96)00080-2.
The purpose of this study was to investigate the surface characteristics of titanium implants.
The chemical state of the surfaces of three types of osseointegrated titanium implant, Brånemark (Nobelpharma, Göteborg, Sweden), IMZ (Friatec, Mannheim, Germany) and ITI-Bonefit (Straumann, Waldenburg, Switzerland), were analysed by Auger electron spectroscopy (AES) and X-ray photoelectron spectroscopy (XPS).
The outermost layers of the implants investigated were speculated to be TiO2. In the Brånemark implants pure titanium was found under the TiO2 layer. By contrast, in the IMZ and ITI-Bonefit implants which are titanium plasma spray coated, oxygen atoms were observed at considerable depths by AES, and the material under the TiO2 layer showed a chemical shift by XPS. Furthermore, shifted peaks were not of pure titanium or of titanium oxide.
The three titanium implants investigated were found to have different surface characteristics when examined by spectroscopy. As these implants show similar osseointegration it is suggested that they may be found to interact differently with vital bone.
本研究旨在调查钛种植体的表面特性。
采用俄歇电子能谱（AES）和X射线光电子能谱（XPS）分析三种骨结合型钛种植体（瑞典哥德堡诺贝尔制药公司的Brånemark种植体、德国曼海姆弗里亚泰克公司的IMZ种植体和瑞士瓦尔登堡士卓曼公司的ITI-Bonefit种植体）表面的化学状态。
推测所研究种植体的最外层为TiO₂。在Brånemark种植体中，TiO₂层下发现有纯钛。相比之下，在采用钛等离子喷涂涂层的IMZ和ITI-Bonefit种植体中，通过AES在相当深的深度观察到了氧原子，并且通过XPS发现TiO₂层下的材料出现了化学位移。此外，位移峰既不是纯钛的也不是氧化钛的。
通过光谱分析发现，所研究的三种钛种植体具有不同的表面特性。由于这些种植体显示出相似的骨结合情况，因此有人提出它们与活骨的相互作用可能不同。
