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首页> 外文期刊>日本セラミックス協会学術論文誌 >Preparation of Al-Free Glass-Ionomer Cement
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Preparation of Al-Free Glass-Ionomer Cement

机译:无铝玻璃离聚物水泥的制备

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摘要

Glass-ionomer cements have been widely used in dentistry. Basically they consist of CaO-Al_2O_3-SiO_2-CaF_2 glass powders and polyacrylic acid. The glass-ionomer cement does not show bioactivity, i.e., bone-bonding ability. One of the reasons for this non-bioactivity may be attributed to the presence of aluminum in the glass powders which suppresses the apatite formation in the living body. In the present study, preparation of an Al-free glass-ionomer cement was attempted by using CaO-Fe_2O_3-SiO_2 glass powders. The obtained cement showed an appropriate workability and setting behavior. The cementation was speculated to progress via the release of Fe~(3+) and Ca~(2+) ions from the glass to form Fe (III) and Ca (II) polyacrylates.
机译:玻璃离聚物水泥已广泛用于牙科。它们基本上由CaO-Al_2O_3-SiO_2-CaF_2玻璃粉和聚丙烯酸组成。玻璃离聚物粘固剂不显示生物活性,即骨结合能力。这种非生物活性的原因之一可以归因于玻璃粉末中铝的存在,从而抑制了生物体内磷灰石的形成。在本研究中,尝试通过使用CaO-Fe_2O_3-SiO_2玻璃粉制备无铝玻璃离聚物水泥。所获得的水泥显示出适当的可加工性和凝结性能。据推测,胶结作用是通过从玻璃中释放Fe〜(3+)和Ca〜(2+)离子形成聚丙烯酸酯Fe(III)和Ca(II)来进行的。

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