Ellis J, Anstice M, Wilson A D
Materials Technology Group, Laboratory of the Government Chemist, Middlesex, UK.
Clin Mater. 1991;7(4):341-6. doi: 10.1016/0267-6605(91)90079-u.
This paper outlines research which aimed to develop a new type of Glass-ionomer cement, the glass polyphosphonate cement. The glass polyalkenoate cement, a form of Glass-ionomer cement, is now widely used in dentistry and is based on the reaction between an ion-leachable aluminosilicate glass and an aqueous solution of poly(acrylic acid) or its copolymers. The new cements described in this paper employ a novel polymer, poly(vinyl phosphonic acid), PVPA, as the acidic component. This is a much stronger acid than those used in the glass polyalkenoate cement, and various means must be employed to moderate the reaction in order to obtain a viable cement. These cements show a number of important differences in performance in comparison with PAA-based systems and these differences are discussed in the paper.
本文概述了旨在开发新型玻璃离子水门汀——玻璃聚膦酸盐水泥的研究。玻璃聚烯烃酸盐水门汀是玻璃离子水门汀的一种形式，目前在牙科领域广泛应用，它基于可离子浸出的铝硅酸盐玻璃与聚丙烯酸或其共聚物的水溶液之间的反应。本文所述的新型水门汀采用一种新型聚合物——聚乙烯基膦酸（PVPA）作为酸性成分。这是一种比玻璃聚烯烃酸盐水门汀中使用的酸更强的酸，必须采用各种方法来缓和反应以获得可用的水门汀。与基于聚丙烯酸的体系相比，这些水门汀在性能上表现出许多重要差异，本文将对这些差异进行讨论。
