Cho E, Kopel H, White S N
Department of Pediatric Dentistry, University of Southern California, School of Dentistry, Los Angeles, California, USA.
Quintessence Int. 1995 May;26(5):351-8.
The purposes of this experiment were to determine if resin-modified glass-ionomer cements are less sensitive to moisture than are conventional glass-ionomer cements, to investigate the effects of barrier coatings, and to study the effects of different setting environments. Discoid specimens of a variety of resin-modified glass-ionomer materials and a conventional glass-ionomer cement control were stored in different environments and were protected with different barrier coatings. The diametral tensile strengths of the specimens were determined and analyzed with three-way analysis of variance. Resin-modified glass-ionomer cements are less sensitive to moisture than is the conventional glass-ionomer cement control. Drier environments produced stronger resin-modified glass-ionomer specimens. Use of a fissure sealant as a barrier coating increased overall specimen strength, and the individual materials differed in strength.
本实验的目的是确定树脂改性玻璃离子水门汀是否比传统玻璃离子水门汀对水分的敏感性更低，研究屏障涂层的作用，并研究不同凝固环境的影响。将多种树脂改性玻璃离子材料的盘状试样和一种传统玻璃离子水门汀对照物储存在不同环境中，并用不同的屏障涂层进行保护。测定试样的径向抗张强度，并采用三因素方差分析进行分析。树脂改性玻璃离子水门汀比传统玻璃离子水门汀对照物对水分的敏感性更低。更干燥的环境使树脂改性玻璃离子试样更强。使用窝沟封闭剂作为屏障涂层可提高试样的整体强度，且各材料的强度有所不同。
