磷灰石
碳酸钙
方解石
钙
碳酸盐
材料科学
模拟体液
矿物学
生物活性玻璃
化学工程
地质学
复合材料
冶金
工程类
作者
Masoud Mozafari,Sara Banijamali,Francesco Baino,Saeid Kargozar,Robert G. Hill
标识
DOI:10.1016/j.actbio.2019.04.039
摘要
The title of this article could sound a bit curious to some readers since a layer of apatite – and not calcium carbonate – is well-known to form on the surface of bioactive glasses upon immersion in simulated body fluids. However, calcium carbonate (commonly reported as calcite crystals) can form on the surface of bioactive glasses as well, instead of or in competition with hydroxyapatite, during in vitro tests. Major factors that govern calcium carbonate formation are a high concentration of Ca2+ ions in the testing solution – and, in this regard, glass composition/texture and type of medium play key roles – along with the volume of solution used during in vitro tests. To date, this phenomenon has received relatively little attention and is still partly unexplored. This article provides a critical overview of the available literature on this topic in order to stimulate constructive discussion among biomaterials scientists and further research for better understanding the mechanisms involved in glass bioactivity. A literature search indicates that a layer of apatite – and not calcium carbonate – is well known to form on the surface of biomaterials during the bioactivity assessment. However, calcium carbonate can form on the surface as well, instead of or in competition with apatite. To date, this phenomenon has received relatively little attention and is still partly unexplored. This review provides a critical overview of the available literature on this topic in order to stimulate constructive discussions that can be further useful for clinical success.
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