[Studies on microleakage of three kinds of dental restorative materials].
In this article we studied the microleakage of three kinds of dental restorative materials by using 131I label compounds and 3H label compounds. The results revealed that the radioactive isotope reverse diffusion method has the advantages of which it is quantitative and sensitive. It is an acceptable and feasible measuring method. Under the condition described in this article, microleakage phenomenon exists in all the test materials and the margin sealing ability of EB composite resins is superior to the others.
Wu
X Y
XY
Dental materials laboratory, Shanghai Second Medical University.
D003188:Composite Resins; D003723:Dental Amalgam; D003763:Dental Leakage / Q000175:diagnosis*; D003793:Dental Restoration, Permanent; D006801:Humans; D007457:Iodine Radioisotopes; D008963:Molar; D012116:Resins, Plant; D014316:Tritium
D003188:Composite Resins; D007457:Iodine Radioisotopes; D012116:Resins, Plant; D014316:Tritium; D003723:Dental Amalgam