CALCIUM-PHOSPHATE FORMATION AT THE SURFACE OF BIOACTIVE GLASS INVIVO
CALCIUM-PHOSPHATE FORMATION AT THE SURFACE OF BIOACTIVE GLASS INVIVO
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DOI：
10.1016/0022-3093(90)90301-2
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发表时间：
1990-05-01
影响因子：
3.5
通讯作者：
KANGASNIEMI, K
中科院分区：
文献类型：
--
作者：
ANDERSSON, OH;KARLSSON, KH;KANGASNIEMI, K
生物活性玻璃是通过化学键合粘附在骨上的玻璃。本文讨论了无磷玻璃与骨的结合，以及在体内无磷玻璃表面磷酸钙的形成。通过推出试验证明了骨结合。在与骨的结合中，玻璃表面最初转化为硅胶。通过SEM/EDX分析，它表明，磷酸根离子从生理溶液渗透到凝胶远。钙的积累只发生在磷酸盐存在的情况下。结果表明，磷酸钙积累的初始阶段是磷酸盐与硅胶的络合。
Bioactive glasses are glasses which can adhere to bone through chemical bonding. This paper discusses the bonding to bone of phosphate-free glasses, and the formation of calcium phosphate at the surface of these glasses in vivo. The bone bonding was proved by a push-out test. In the bonding to bone, the glass surface initially transforms into a silica gel. By SEM/EDX analysis it was shown that phosphate ions from the physiological solution penetrate far into the gel. Calcium accumulation occurs only in the presence of phosphate. The results suggest that the initial stage of the calcium phosphate build-up is complexation of phosphate by the silica gel.