Why dental membrane?
There are many types of membranes that are used in many different ways. Different doctors have different preferences and that is typically why one is used over the other.
Need them to help contain graft material and maybe all that is needed to exclude the soft tissue and let bone form in some case (for example post extraction)
the barriers alone produced better clinical results than grafts+barriers or grafts alone. It could be argued that the protective, space-making effect of the barriers on the blood clot inside the socket and on the remaining bone walls outside the socket is responsible; ie, the barrier, acting as a shield, could enhance the physiologic healing process, minimizing bone loss and maximizing bone repair, with a resulting net effect of improvement versus untreated extraction sockets in terms of bone height and width.1
it could be argued that socket preservation techniques are effective regardless of whether primary
flap closure is achieved 1
Bryan Bauer, DDS, FAGD