义齿软衬材料的耐老化实验研究  

Experimental studies on the stability of three resilient denture liner materials

作　　者：赵信义[1] 施长溪[1] 

机构地区：[1]第四军医大学口腔医学院

出　　处：《实用口腔医学杂志》1998年第1期58-59,共2页Journal of Practical Stomatology

摘　　要：目的：评价３种义齿软衬材料的耐老化性能。方法：３７℃人工唾液浸泡１年及２年后，测定拉伸强度、邵氏硬度及与ＰＭＭＡ的粘接强度。结果：自凝丙烯酸软衬材料的耐老化性能最差，衬特灵Ⅰ型及Ｍｏｌｏｐｌａｓｔ－Ｂ在浸入人工唾液１年后，与ＰＭＭＡ的粘接强度分别下降１９％和２２％，而拉伸强度、硬度基本无变化；在浸入人工唾液２年后，粘接强度分别下降３５％和４７％，拉伸强度也都有所下降，硬度略有增加。结论：丙烯酸软衬材料只能作短期衬垫用，衬特灵Ⅰ型及Ｍｏｌｏｐｌａｓｔ－Ｂ可做为中长期使用。Objective:To evaluate the stability of three resilient denture liner materials. Methods: The tensile strength, Shore A hardness and adhesive strength of the three resilient denture liner materials to PMMA were measured after being immersed in artificial saliva for one and two years. Results:The adhesive strength of Gentliner A or Molloplast B to PMMA were decreased by 19% or 22% respectively after being immersed in artificial saliva for one year, while tensile strength and hardness were unchanged. After being immersed for two years, the adhesive strength of Gent liner A or Molloplast B to PMMA were decreased by 35% or 47% respectively, with a little decrease of tensile strength and increase of hardness. Conclusions: Self curing acrylic resin resilient denture liner material can only be used for temporary liner, while Gentliner A and Molloplast B can be used for mediate or long term resilient denture liner.

关 键 词：义齿 软衬材料 耐老化性 

分 类 号：R783.6[医药卫生—口腔医学] R783.1[医药卫生—临床医学]