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Dense-PTFE Membrane vs. Expanded-PTFE Membrane ?
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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 发自小木虫IOS客户端 |
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