Morphological and phase characterizations of retrieved calcium phosphate cement implants
Morphological and phase characterizations of retrieved calcium phosphate cement implants
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DOI：
10.1002/1097-4636(2001)58:1
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发表时间：
2001-02-01
期刊：
影响因子：
--
通讯作者：
Costantino, PD
中科院分区：
文献类型：
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作者：
Takagi, S;Chow, LC;Costantino, PD
一种自硬化磷酸钙水泥（CPC），由等摩尔量的无水磷酸四钙和磷酸二钙组成，与水混合后硬化，形成可吸收的羟基磷灰石（HA）作为最终产物。本研究的目的是在体内条件下研究CPC在硬化和老化过程中物相和形态的变化。在体内硬化12小时后回收的CPC样品已经含有碳化HA （B型），即使最初的水泥混合物不含碳酸盐作为固体成分之一。12h样品中碳酸盐的质量分数约为1%。结果表明，在体内条件下，碳酸盐很容易获得，这使得碳酸化透明质酸的形成有利于无碳酸盐的透明质酸。植入3个月后回收的CPC样品的碳酸盐含量与12小时样品相似，并且3个月样品的外表面比12小时样品的结晶度更低，(C) 2000 John Wiley & Sons。公司。[J] .中国生物医学工程学报，2016,31(2):444 - 444。2001.
A self-hardening calcium phosphate cement (CPC), consisting of equimolar amounts of tetracalcium phosphate and dicalcium phosphate anhydrous, hardens when mixed with water and forms a resorbable hydroxyapatite (HA) as the end-product. The objective of this study was to investigate the changes of the phase and morphology of the CPC during hardening and aging under in vivo conditions. CPC samples retrieved 12 h after hardening in vivo had already contained carbonated HA (type B), even though the initial cement mixture did not contain carbonate as one of the solid components. The mass fraction of carbonate in the 12-h sample was about 1%. The results suggested that under in vivo conditions carbonate is readily available and this allows formation of carbonated HA in favor of carbonate-free HA, The carbonate content of the CPC samples retrieved 3 months after implantation was similar to that of the 12-h samples, and the exterior surfaces of the 3-month samples appeared less crystalline than that of the 12-h samples, (C) 2000 John Wiley & Sons. Inc. J Biomed Mater Res (Appl Biomater) 58: 36-41. 2001.