Models of structure, dynamics and reactivity of bioglasses: a review
Models of structure, dynamics and reactivity of bioglasses: a review
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DOI：
10.1039/c0jm01081b
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发表时间：
2010-08
影响因子：
--
通讯作者：
A. Tilocca
中科院分区：
文献类型：
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作者：
A. Tilocca
由于其高生物相容性和骨传导性，生物活性硅酸盐玻璃是用于修复、恢复和再生人体骨和组织的生物材料的核心成分。控制其生物活性的关键特征之一是在生物介质中的快速表面溶解，并在周围环境中释放临界量的离子。如果要寻求一种更合理的方法来使用这些材料，那么能够在原子水平上理解这些无机过程是至关重要的。在过去的五年中，玻璃的原子模拟揭示了影响玻璃溶解及其生物活性的本体结构特征的细节，例如硅酸盐网络的连接性以及形成链、环和簇的趋势。进一步的模拟已经开始直接关注玻璃表面的细节及其在水性环境中的反应性。本文综述了最近的计算方法，用于调查其生物活性行为至关重要的玻璃的属性。
Due to their high biocompatibility and osteoconductivity, bioactive silicate glasses are the core components of biomaterials used to repair, restore and regenerate bone and tissues in the human body. One of the key features, which control their bioactivity, is the fast surface dissolution in a biological medium, with the release of critical amounts of ions in the surrounding environment. Being able to understand these inorganic processes at the atomistic level is essential if a more rational approach to the use of these materials is sought. Over the past five years, atomistic simulations of bioglasses have revealed details of bulk structural features which affect the glass dissolution and thus its bioactivity, such as the connectivity of the silicate network and the tendency to form chains, rings and clusters. Further simulations have started to focus directly on the details of the glass surface and of its reactivity in an aqueous environment. This article reviews recent computational approaches used to investigate the properties of bioglasses crucial for their bioactive behaviour.