FORMULATION AND SETTING TIMES OF SOME CALCIUM ORTHOPHOSPHATE CEMENTS - A PILOT-STUDY
FORMULATION AND SETTING TIMES OF SOME CALCIUM ORTHOPHOSPHATE CEMENTS - A PILOT-STUDY
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DOI：
10.1007/bf00120130
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发表时间：
1993-09-01
影响因子：
3.7
通讯作者：
PLANELL, JA
中科院分区：
文献类型：
--
作者：
DRIESSENS, FCM;BOLTONG, MG;PLANELL, JA
综述了在室温或体温下沉淀或在高温下反应生成的正磷酸钙。大多数水泥配方含有至少一种或多种酸性组分和一种或多种碱性组分，当粉末与水混合时，它们发生反应。在磷酸钙体系中，反应物的几种组合是可能的，甚至与含有钠、钾、镁、锌、碳酸盐或氯化物的磷酸钙的组合被认为是有用的。此外，可加入其它化合物作为固化反应的加速剂或阻滞剂或作为骨向内生长的促进剂。在这项研究中，超过100种配方已经测试了它们与水混合后的凝结能力。用Gilmore针测量初始和最终凝固时间。
Calcium orthophosphates which either can be formed by precipitation at room or body temperatures or by reactions at higher temperatures have been reviewed. Most formulations of cements contain at least one or more acidic components and one or more basic components which react when the powder is mixed with water. Several combinations of reactants are possible in the systems of calcium phosphates and even combinations with calcium phosphates containing sodium, potassium, magnesium, zinc, carbonate or chloride are thought to be useful. Furthermore, other compounds can be added as accelerators or retarders of the setting reaction or as promoters of bone ingrowth. In this study, over 100 formulations have been tested on their ability to set upon mixing with water. The initial and final setting times were measured with Gilmore needles.