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首页> 外文期刊>Boletin de la Sociedad Espanola de Ceramica y Vidrio >Different in vitro behavior of two Ca3(PO4)2 based biomaterials, a glass-ceramic and a ceramic, having the same chemical composition
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Different in vitro behavior of two Ca3(PO4)2 based biomaterials, a glass-ceramic and a ceramic, having the same chemical composition

机译：具有相同化学成分的两种基于Ca3（PO4）2的生物材料（玻璃陶瓷和陶瓷）的体外行为不同

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Abstract In this work, the influence of the nature of two materials, with the same chemical composition, on their in vitro behavior has been studied. Two routes were used to obtain these materials with the composition 45% CaO, 22% SiO2, 28% {P2O5} and 5% MgO (wt.%). The first material is a glass-ceramic obtained by melting and quenching on cold water and the second one is a ceramic obtained by conventional solid state sintering. In both cases, the raw materials used were tricalcium phosphate, talc and wollastonite. The reactivity in simulated body fluid and Tris–HCl solutions was studied. Both materials showed bioactive behavior, but the glass-ceramic dissolved faster, releasing large proportion of Ca and P ions, which afterwards nucleated and precipitated. However, the ceramic was more stable under the same conditions in these solutions. Glass-ceramic composite has a more open structure and allowed the faster formation of a bone-like apatite layer than the ceramic.
机译：摘要在这项工作中，研究了两种化学成分相同的材料的性质对其体外行为的影响。使用两种途径来获得具有45％CaO，22％SiO 2，28％{P 2 O 5}和5％MgO（重量％）的组成的这些材料。第一种材料是通过在冷水中熔化和淬火而获得的玻璃陶瓷，第二种材料是通过常规的固态烧结获得的陶瓷。在这两种情况下，所使用的原料都是磷酸三钙，滑石粉和硅灰石。研究了在模拟体液和Tris-HCl溶液中的反应性。两种材料都表现出生物活性，但是玻璃陶瓷溶解得更快，释放出很大比例的Ca和P离子，然后成核并沉淀。但是，在这些溶液中的相同条件下，陶瓷更稳定。玻璃-陶瓷复合材料具有比陶瓷更开放的结构，并允许更快地形成骨状磷灰石层。

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