口腔科学者长期以来寻求一种对牙釉质和牙本质有粘接性,对牙髓无刺激性,有较好理化性能的充填材料。Smith于1968年首次介绍了一种新的牙科水门汀—聚羧酸锌水门汀,其中含有聚丙烯酸,可与牙齿中的钙起螯合作用,形成粘接,理化性能与磷酸锌水门汀相近似,对牙髓刺激轻微,不仅可作粘合剂,也可作牙洞的垫底料。70年代初即有商品出售。随后作了多次改进,陆续出现Durelon、PCA、BoxyI、Bondal、Oxicap、Corbolit等十余种商品,临床效果较好,巳较广泛被采用。但也存在一些问题,现在还 Stomatologists have long sought a filling material that has good adhesion to enamel and dentin, is non-irritating to the dental pulp, and has good physical and chemical properties. Smith first introduced in 1968 a new dental cement - polycarboxylate cement, which contains polyacrylic acid, which can chelate the calcium in the teeth to form a bond, physical and chemical properties similar to zinc phosphate cement, the right Pulp stimulation mild, not only for adhesives, but also for the dental cavity cushion material. The early 70s that is the sale of goods. Subsequent improvements were made, with Durelon, PCA, BoxyI, Bondal, Oxicap and Corbolit successively emerging. Clinically effective products have been widely used. But there are also some problems, now also