Gdoc, a dental student, asks:

I am a dental student and I am trying to figure out the difference between a dense-PTFE membrane and a expanded-PTFE membrane. What exactly is the difference? Is it the pore size? Or is it that one is meant to be left exposed and the other needs to be covered?Please clarify. Thanks

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5 Responses to “ Dense-PTFE Membrane vs. Expanded-PTFE Membrane ? ”

  • MSG September 11th, 2007

    You are correct. The manufacturing process of high density PTFE decreases the pore size to .2 microns, making the material impervious to bacteria. Primary closure is not required, and not desired, making the membrane removal easy and painless. The studies in the past using e-PTFE yielded the best results in terms of bone regeneration compared with resorbable products(Buser), however the exposure rate was very high leading to biomaterial centered infections and complications. The d-PTFE yields comparable results. (Greenwell)

  • VB September 13th, 2007

    In my practice i have good results with cytoplast dense PTFE membrane. Much better bone preservation and tissue responce than to resorbable membranes. Price is better is better too.

  • Sinjin September 19th, 2007

    remember when resorbable membranes resorb, they resorb with an inflammatory response, that leads to some resorption. Even through hydrolysis of polylactic acid (resorbable plates and membranes) there is evidence of inflammation in there resorption processes.

  • narayan September 22nd, 2007

    while on the topic ,can collatape be used as an effective barrier membrane? If not ,why not ?

  • drs. T November 11th, 2007

    Where does one buy the d- PTFE. Is this a membrane from gore-tex?


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Fri July 04 2008

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