Coury T L, Miranda F J, Duncanson M G
J Prosthet Dent. 1981 Mar;45(3):296-9. doi: 10.1016/0022-3913(81)90394-2.
The products exhibiting the greatest tensile strength values were those systems which provided measuring devices enabling the dentist to more accurately control the amounts of material to be mixed. Statistical analysis supported this finding; the means of the powder/liquid and paste/liquid systems formed a group that was significantly different from the five paste/paste systems. This indicates that accurate measurement of components could represent one important factor in the ultimate strength of a composite resin. There was no apparent correlation between average density and mean diametral tensile strength for the seven systems compared in this study.
表现出最大拉伸强度值的产品是那些提供测量装置的系统，这些装置能使牙医更准确地控制待混合材料的量。统计分析支持了这一发现；粉末/液体和糊剂/液体系统的平均值形成了一个与五个糊剂/糊剂系统显著不同的组。这表明，组分的精确测量可能是复合树脂最终强度的一个重要因素。在本研究中比较的七个系统中，平均密度与平均径向拉伸强度之间没有明显的相关性。
