White S N, Yu Z
Department of Restorative Dentistry, School of Dentistry, University of Southern California, Los Angeles 90089-0641.
Int J Prosthodont. 1993 Jul-Aug;6(4):384-9.
This study determined and compared physical properties of six fixed prosthodontic resin composite luting agents and one control. Inorganic filler content, compressive strength, diametral tensile strength, film thickness, and Knoop hardness were determined. The amounts of filler and the physical properties varied widely among materials. One material, which contained a minimal amount of filler, underwent so much plastic deformation that its strengths could not be measured. All other materials demonstrated high strengths. The materials with the least filler demonstrated the least resistance to indentation. The material with the lowest film thickness had not set at the time of measurement, 10 minutes after mixing. Most materials had unacceptable film thicknesses. Only one material demonstrated acceptable physical properties throughout the study.
本研究测定并比较了六种固定义齿修复用树脂复合材料粘结剂及一种对照材料的物理性能。测定了无机填料含量、抗压强度、径向拉伸强度、薄膜厚度和努氏硬度。材料之间的填料含量和物理性能差异很大。一种填料含量极少的材料发生了大量塑性变形，以至于无法测量其强度。所有其他材料均表现出高强度。填料最少的材料抗压痕能力最差。薄膜厚度最低的材料在混合后10分钟测量时仍未固化。大多数材料的薄膜厚度不合格。在整个研究过程中，只有一种材料表现出可接受的物理性能。
