Effect of bioactivation through acid/alkali process on the flexure strength of zirconia-based ceramics and composites
Effect of bioactivation through acid/alkali process on the flexure strength of zirconia-based ceramics and composites
复制标题
酸/碱工艺生物活化对氧化锆基陶瓷和复合材料弯曲强度的影响
DOI：
10.1080/09243046.2022.2042914
复制
发表时间：
2022
影响因子：
2.9
通讯作者：
Kobayashi Satoshi
中科院分区：
文献类型：
--
作者：
Kojima Riku;Osada Toshiko;Kobayashi Satoshi
四方氧化锆多晶(TZP)和氧化铝增韧氧化锆(ATZ)等氧化锆基陶瓷因其高强度、高断裂韧性和良好的生物相容性而成为生物材料的研究热点。然而，它们的生物惰性限制了它们的应用，这使得它们无法直接结合到活的骨骼上。为此，本文研究了酸/碱法对氧化锆材料的生物活性。目前，关于这种处理的低温降解(LTD)行为的信息很少。在本研究中，我们通过测试TZP或ATZ在氢氧化钠或磷酸水溶液中浸泡后的单斜率和双向弯曲强度来研究TZP或ATZ的降解行为。结果表明，单斜相分数显著增加，表明LTD出现在表面，而强度没有受到影响。此外，在SBF中浸泡7天后，TZP上的磷灰石生成多于ATZ上的磷灰石。特别是在磷酸处理条件下，几乎整个表面都覆盖着磷灰石。接触角的测量表明，可以预测在SBF中浸泡过程中磷灰石的形成能力。
Zirconia-based ceramics such as tetragonal zirconia polycrystals (TZP) and alumina toughened zirconia (ATZ) are attractive as biomaterials because of their high strength, high fracture toughness, and excellent biocompatibility. However, their application has been limited by their bio-inertness, which prevents them from directly bonding to the living bone. Therefore, the bioactivation of zirconia materials through the acid/alkali process has been studied. Currently, there is little information on the low-temperature degradation (LTD) behavior associated with this treatment. In this study, we investigated the degradation behavior of TZP or ATZ by examining the monoclinic fraction and biaxial flexure strength after immersion in sodium hydroxide or phosphoric acid aqueous solutions. The results showed that the monoclinic fraction increased significantly, indicating LTD at the surface, whereas the strength was not affected. In addition, more apatite formation was observed on TZP than on ATZ after immersion in SBF for 7 days. In particular, under the phosphoric acid treatment condition, almost the entire surface was covered with apatite. The contact angle measurement showed the possibility of predicting the apatite formation ability during immersion in SBF.
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影响因子：
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作者：
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DOI：
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发表时间：
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影响因子：
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作者：
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DOI：
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发表时间：
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影响因子：
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DOI：
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发表时间：
2019
期刊：
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影响因子：
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