Price C A
Department of Prosthetic Dentistry, University of Sydney, Surry Hills, NSW, Australia.
Aust Prosthodont J. 1993;7:35-8.
Acrylic resin has been the denture base material of choice since its initial production in 1936, due to its aesthetic properties and ease of processing. It would be desirable, however, to have a material which is also unbreakable under clinical conditions. A wide range of materials has been suggested for use as denture base materials. The impact resistance of a polysulphone denture base polymer has been compared with that of a linear poly(methyl methacrylate) and four rubber-methacrylate denture base polymers. When tested under oral conditions, the polysulphone material had an impact resistance about twice as high as the best rubber-methacrylate and about four times as high as ordinary poly(methyl methacrylate).
自1936年首次生产以来，丙烯酸树脂因其美学特性和易于加工而一直是义齿基托材料的首选。然而，若能有一种在临床条件下也不易破碎的材料则更为理想。人们已提出多种材料用作义齿基托材料。已将一种聚砜义齿基托聚合物的抗冲击性与一种线性聚甲基丙烯酸甲酯以及四种橡胶-甲基丙烯酸甲酯义齿基托聚合物的抗冲击性进行了比较。在口腔条件下进行测试时，聚砜材料的抗冲击性约为最佳橡胶-甲基丙烯酸甲酯材料的两倍，约为普通聚甲基丙烯酸甲酯材料的四倍。
