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首页> 外文期刊>Journal of biomedical materials research. Part B, Applied biomaterials. >Comparative Study of Bone Cements Prepared with Either HA or alpha-TCP and Functionalized Methacrylates
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Comparative Study of Bone Cements Prepared with Either HA or alpha-TCP and Functionalized Methacrylates

机译：HA或α-TCP与功能化甲基丙烯酸酯制备骨水泥的比较研究

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摘要

The properties of bone cements prepared with both hydroxyapatite (HA) and alpha-tricalcium phosphate (alpha-TCP) and methacrylates containing acidic or basic groups are the main interest of this article. The presence of methacrylic acid or diethyl amino ethyl methacrylate as comonomers in the bone cement and both ceramic types as filler were found not to affect the amount of residual monomer, which was generally less than 4.5 wt percent. In contrast, setting times, maximum temperature, and glass transition temperature were found to be composition dependent. For samples with acidic comonomer, a faster setting time, a higher maximum temperature, and higher glass transition temperatures were observed compared to those with the basic comonomer. The presence of the fillers slightly increased the setting time but did not affect the other parameters. The mechanical properties of the filled bone cements depended mainly on composition and type of testing. Both HA or alpha-TCP filled systems fulfilled the minimum compressive strength required for bone cement application, although a significantly lower value was observed for the alkaline comonomer systems. The minimum bending strength was not satisfied by any of these formulations. The tensile and shear strength of these composites ranged from 20 to 37.9 and from 18 to 27 MPa, respectively. In all cases it was higher for bone cements containing methacrylic acid. The results of this study suggest that the properties of dry unfilled bone cements prepared with MAA are comparable to CMW 3 in mechanical terms but inferior in their setting properties.
机译：用羟基磷灰石（HA）和α-磷酸三钙（α-TCP）以及含有酸性或碱性基团的甲基丙烯酸酯制备的骨水泥的性能是本文的主要目的。发现在骨水泥中存在作为共聚单体的甲基丙烯酸或甲基丙烯酸二乙氨基乙酯，并且两种陶瓷类型均作为填充剂不会影响残余单体的量，该单体含量通常小于4.5 wt％。相反，发现固化时间，最高温度和玻璃化转变温度取决于组成。与具有酸性共聚单体的样品相比，具有碱性共聚单体的样品观察到更快的固化时间，更高的最高温度和更高的玻璃化转变温度。填料的存在会稍微增加凝固时间，但不会影响其他参数。填充骨水泥的机械​​性能主要取决于测试的组成和类型。 HA或alpha-TCP填充系统均满足骨水泥应用所需的最低抗压强度，尽管碱性共聚单体系统的值明显较低。这些配方均不能满足最小弯曲强度。这些复合材料的拉伸强度和剪切强度分别为20至37.9和18至27 MPa。在所有情况下，含甲基丙烯酸的骨水泥的含量都更高。这项研究的结果表明，用MAA制备的干式非填充骨水泥的机械​​性能可与CMW 3媲美，但其固化性能较差。

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