Comparison of ceramic and titanium implants in cats.
Comparison of ceramic and titanium implants in cats.
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猫的陶瓷和钛植入物的比较。
DOI：
10.3109/17453678508993042
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发表时间：
1985
期刊：
影响因子：
--
通讯作者：
L. Solheim
中科院分区：
文献类型：
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作者：
E. Barth;H. Rønningen;L. Solheim
比较了涂有玻璃陶瓷的钛和纯钛种植体的骨-种植体界面的机械强度。该玻璃陶瓷的化学成分与 45S5F 生物玻璃类似。将圆柱形植入物放置在猫股骨中。六周后，使用拉拔测试来测试固定强度。应用能量色散 X 射线微量分析来探究机械强度与骨-植入物界面元素组成变化之间的任何可能关系。纯钛植入物的极限剪切力高于涂有玻璃陶瓷的植入物。此外，玻璃陶瓷涂层也被组织部分降解。显然，玻璃陶瓷与骨界面的机械性能受到某种化学反应的控制，这种化学反应意味着元素从植入物转移到骨。看来这种反应最终会破坏涂层，使得这种材料不适合假体固定。
The mechanical strengths of the bone-implant interfaces of titanium coated with glass ceramic and pure titanium implants were compared. The glass ceramic had a chemical composition similar to 45S5F Bioglass. Cylindrical implants were placed in feline femurs. Six weeks later the strength of the fixation was tested using pull-out tests. Energy dispersive X-ray microanalysis was applied to pursue any possible relationship between mechanical strength and changes in elemental composition at the bone-implant interface. The ultimate shearing force for the pure titanium implants was higher than for the implants coated with glass ceramic. Also, the glass ceramic coating was partly degraded by the tissues. Evidently, the mechanical properties of the glass ceramic to bone interface were governed by some sort of chemical reaction that implied transfer of elements from the implant to bone. It appears that this reaction eventually will destroy the coating which makes this kind of material unsuitable for prosthesis fixation.