摘要
目的：探讨８种粘接材料的凝固收缩与吸水后的尺寸变化。方法：用直接法测量实验标本在凝固后的０，１，１０，１００，１０００，１００００ｍｉｎ的尺寸大小，其中１０ｍｉｎ前标本是在室内的状态下，１０ｍｉｎ后标本置于３７℃的水中。结果：所有标本都有不同程度的凝固收缩。吸水后，树脂强化玻璃离子表现为膨胀，而玻璃离子则收缩。结论：粘接材料都具有凝固收缩的特点，在口腔环境内还可发生轻微的尺寸改变。
Objective:The purpose of this study was to evaluate eight kinds of luting cements curing shrinkage and volumetric changes in water.Methods: Measured diameter of specimen at different condition with micrometer. Results: All the luting cements had different extent curing shrinkage. The resin modified glass ionomer cement expanded as a function of the duration of the water immersion. The conventional glass cement lossed volume with water storage. Conclusions: Luting cements had curing shrinkage. In oral cavity, luting cements might be changed their volume slightly.
出处
《中国医科大学学报》
CAS
CSCD
北大核心
1998年第3期253-256,共4页
Journal of China Medical University
关键词
粘接材料
直接法
凝固收缩
吸水膨胀
牙科材料
luting cements
direct measured
curing shrinkage
expanded with water immersion
