Douglas W H, Chen C J, Craig R G
J Dent Res. 1980 Sep;59(9):1507-10. doi: 10.1177/00220345800590090901.
Neutron activation analysis with dysprosium as a tracer was employed to determine quantitatively the microleakage around the restorations of an experimental hydrophobic composite, as well as a commercial composite. Only a negligible uptake of tracer was obtained for the experimental composite, whereas a five-fold uptake was recorded for the commercial composite. Capillary penetration of fluid around a restoration could be greatly reduced by using a hydrophobic composite.
采用以镝为示踪剂的中子活化分析法定量测定了一种实验性疏水复合材料以及一种市售复合材料修复体周围的微渗漏情况。对于实验性复合材料，示踪剂的摄取量可忽略不计，而市售复合材料的摄取量则记录为前者的五倍。使用疏水复合材料可大大减少修复体周围液体的毛细渗透。
