2004 Volume 24 Issue 2-3 Pages 285-290
Two sorts of un-absorption barrier membrane are currently used in GBR around a dental implant. They show different clinical outcome though they are made from the same ingredient. The one is popular and has high reliability. But many clinicians have worry about the exposure of barrier membrane. The other tends to keep off the exposure, which covers the disadvantage of the one. Why do two kinds of barrier membrane have different clinical result, which are consisted of the same polytetrafluoroethylene (PTFE) ? Tow sorts of PTFE. e-PTFE and n-PTFE, are observed by the electron microscope to find the difference in their structure. Consequently, we confirm a clear difference in their structure between them, which explain scientifically the difference in a clinical condition between two sorts of PTFE.
