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首页> 外文期刊>Journal of biomedical materials research. Part B, Applied biomaterials. >Influence of surface topography and surface physicochemistry on wettability of zirconia (tetragonal zirconia polycrystal).
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Influence of surface topography and surface physicochemistry on wettability of zirconia (tetragonal zirconia polycrystal).

机译：表面形貌和表面物理化学对氧化锆（四方氧化锆多晶）的润湿性的影响。

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摘要

Surface modification technologies are available for tetragonal zirconia polycrystal (TZP) to enhance its bioactivity and osseointegration capability. The surface wettability of an implant material is one of the important factors in the process of osseointegration, possibly regulating protein adsorption, and subsequent cell behavior. The aim of this study was to clarify the effect of topographical or physicochemical modification of TZP ceramics on wettability to determine the potential of such treatment in application to implants. Several types of surface topography were produced by alumina blasting and acid etching with hydrofluoric acid; surface physicochemistry was modified with oxygen (O(2)) plasma, ultraviolet (UV) light, or hydrogen peroxide treatment. The obtained specimens were also subjected to storage under various conditions to evaluate their potential to maintain superhydrophilicity. The results showed that surface modification of surface topography or physicochemistry, especially of blast/acid etching as well as O(2) plasma and UV treatment, greatly increased the surface wettability, resulting in superhydrophilicity. X-ray photoelectron spectroscopy revealed that a remarkable decrease in carbon content and the introduction of hydroxyl groups were responsible for the observed superhydrophilicity. Furthermore, superhydrophilicity was maintained, even after immersion in an aqueous solution, an important consideration in the clinical application of this technology.
机译：表面改性技术可用于四方氧化锆多晶（TZP），以增强其生物活性和骨整合能力。植入物材料的表面润湿性是骨整合过程中的重要因素之一，可能调节蛋白质的吸附以及随后的细胞行为。这项研究的目的是阐明TZP陶瓷的形貌或物理化学改性对润湿性的影响，以确定这种处理在植入物中的应用潜力。通过氧化铝喷砂和氢氟酸酸蚀产生了几种类型的表面形貌。表面的物理化学被修改与氧（O（2））等离子体，紫外线（UV）或过氧化氢处理。还将获得的标本在各种条件下进行保存，以评估其保持超亲水性的潜力。结果表明，表面形貌或物理化学的表面改性，尤其是喷砂/酸蚀以及O（2）等离子体和紫外线处理，大大提高了表面润湿性，从而产生了超亲水性。 X射线光电子能谱表明，碳含量的显着降低和羟基的引入是所观察到的超亲水性的原因。此外，即使在浸入水溶液中之后，仍保持超亲水性，这是该技术在临床上的重要考虑因素。

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