APPLICATION OF MICRO BEAM PIXE TO DETECTION OF TITANIUM ION RELEASE FROM DENTAL AND ORTHOPAEDIC IMPLANTS
APPLICATION OF MICRO BEAM PIXE TO DETECTION OF TITANIUM ION RELEASE FROM DENTAL AND ORTHOPAEDIC IMPLANTS
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微束像素在牙科和骨科植入物钛离子释放检测中的应用
DOI：
10.1142/s0129083594000118
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发表时间：
1994
期刊：
影响因子：
--
通讯作者：
C. Johansson
中科院分区：
文献类型：
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作者：
A. Ektessabi;T. Otsuka;Y. Tsuboi;K. Yokoyama;T. Albrektsson;L. Sennerby;C. Johansson
在过去的二十年里，牙科和骨科植入物在重建外科中的应用得到了广泛的应用。这些植入物大多长时间植入人体的腐蚀性环境中。由于这些材料的腐蚀，金属离子的溶解、释放和迁移的水平目前还不完全清楚。本文报道了应用微离子束PIXE光谱分析技术检测植入兔胫骨的钛及钛合金植入物3个月后钛的释放量。结果发现，钛离子可在种植体周围组织中检测到，且具有较高的精密度，与软组织相比，钛离子在骨组织中的含量较高。因此，利用微离子束PIXE光谱检测金属离子的释放，以及释放出的物质在种植体周围的分布具有较高的分辨率和准确度，可以用来进一步研究金属的释放机理，以及表面微形态与种植体材料耐蚀性的关系。
In the past two decades the utilization of dental and orthopaedic implants in reconstructive surgery has been spread widely. Most of these implants are inserted in the corrosive environment of the human body for long periods of time. The level of dissolution, release, and transport of metal ions as a result of corrosion of these materials are not fully known at present. We report the results of application of micro ion beam PIXE spectroscopy to detect release of titanium from titanium and titanium alloy implants inserted in the tibiae of rabbits for three months. It was found that titanium ions could be detected in the surrounding tissues, with high precision, as a gradient from the implant surface and in higher amounts in the bone tissue as compared with the soft tissues. It is concluded that application of micro ion beam PIXE spectroscopy for detection of metal ion release, and distribution of the released material around the implants with high special resolution and accuracy may be used to further investigate the mechanism of metal release, and the relation between surface micromorphology and corrosion resistance of the implant materials.