Bone-bonding properties of Ti metal subjected to acid and heat treatments
Bone-bonding properties of Ti metal subjected to acid and heat treatments
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DOI：
10.1007/s10856-012-4758-4
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发表时间：
2012-12-01
影响因子：
3.7
通讯作者：
Kokubo, Tadashi
中科院分区：
文献类型：
--
作者：
Kawai, Toshiyuki;Takemoto, Mitsuru;Kokubo, Tadashi
在4 ~ 26周的时间内，通过力学剥离试验和组织学观察观察表面处理对钛金属骨结合性能的影响。600℃单纯热处理或单独用H2SO4/HCl混合酸处理均不能明显提高钛金属的骨结合能力，但酸处理后的热处理能显著提高钛金属的骨结合能力。即使是先前经过NaOH处理的钛金属，在酸和热处理后也显示出相当高的骨结合能力。如此高的结合能力归因于它们在体内环境中形成磷灰石的能力。它们的高磷灰石形成能力归因于高的表面正电荷，而不是晶体相的类型或表面的特定粗糙度。目前的研究表明，酸和随后的热处理对于赋予钛金属植入物稳定的固定性能是有效的。
The effects of surface treatment on the bone-bonding properties of Ti metal were examined by both mechanical detaching test and histological observation after implantation into rabbit tibiae for various periods ranging from 4 to 26 weeks. The bone-bonding ability of Ti metal, which is extremely low as it is abraded, was hardly increased by simple heat treatment at 600 A degrees C or treatment with H2SO4/HCl mixed acid alone, but was markedly increased by the heat treatment after the acid treatment. Even Ti metal that had been previously subjected to NaOH treatment showed considerably high bone-bonding ability after acid and heat treatments. Such high bonding abilities were attributed to their high apatite-forming ability in the body environment. Their high apatite-forming abilities were attributed to a high positive surface charge, and not to the type of crystalline phase or specific roughness of their surfaces. The present study has demonstrated that acid and subsequent heat treatments are effective for conferring stable fixation properties on Ti metal implants.