Wang Jie, Yang Baohui, Guo Shuai, Yu Sen, Li Haopeng
Department of Orthopedic Surgery, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China.
Shaanxi Key Laboratory of Biomedical Metal Materials, Northwest Institute for Nonferrous Metal Research, Xi'an, China.
Front Bioeng Biotechnol. 2023 Aug 21;11:1251947. doi: 10.3389/fbioe.2023.1251947. eCollection 2023.
Titanium alloys are some of the most important orthopedic implant materials currently available. However, their lack of bioactivity and osteoinductivity limits their osseointegration properties, resulting in suboptimal osseointegration between titanium alloy materials and bone interfaces. In this study, we used a novel sandblasting surface modification process to manufacture titanium alloy materials with bioactive sandblasted surfaces and systematically characterized their surface morphology and physicochemical properties. We also analyzed and evaluated the osseointegration between titanium alloy materials with bioactive sandblasted surfaces and bone interfaces by experiments with co-culture of osteoblasts and experiments with a rabbit model. In our experiments, the proliferation, differentiation, and mineralization of the osteoblasts on the surfaces of the materials with bioactive sandblasted surfaces were better than those in the control group. In addition, our experiments showed that the titanium alloy materials with bioactive sandblasted surfaces were able to promote the growth of trabecular bone on their surfaces compared to controls. These results indicate that the novel titanium alloy material with bioactive sandblasted surface has satisfactory bioactivity and osteoinductivity and exhibit good osseointegration properties, resulting in improved osseointegration between the material and bone interface. This work lays a foundation for subsequent clinical application research into titanium alloy materials with bioactive sandblasted surfaces.
钛合金是目前可用的一些最重要的骨科植入材料。然而,它们缺乏生物活性和骨诱导性限制了它们的骨整合特性,导致钛合金材料与骨界面之间的骨整合不理想。在本研究中,我们使用一种新型喷砂表面改性工艺来制造具有生物活性喷砂表面的钛合金材料,并系统地表征了它们的表面形态和物理化学性质。我们还通过成骨细胞共培养实验和兔模型实验分析和评估了具有生物活性喷砂表面的钛合金材料与骨界面之间的骨整合。在我们的实验中,具有生物活性喷砂表面的材料表面上的成骨细胞的增殖、分化和矿化优于对照组。此外,我们的实验表明,与对照组相比,具有生物活性喷砂表面的钛合金材料能够促进其表面上小梁骨的生长。这些结果表明,具有生物活性喷砂表面的新型钛合金材料具有令人满意的生物活性和骨诱导性,并表现出良好的骨整合特性,从而改善了材料与骨界面之间的骨整合。这项工作为后续具有生物活性喷砂表面的钛合金材料的临床应用研究奠定了基础。
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