Membrane

In implant dentistry, a membrane is a thin barrier material placed over a bone graft to protect it during healing. It is an essential component of Guided Bone Regeneration (GBR).

Why a membrane is needed

Bone cells regenerate slowly. Without a membrane, faster-migrating soft tissue (gum) cells would fill the grafted space before bone has time to form. The membrane physically blocks soft tissue while allowing nutrients and bone-forming signals to reach the graft.

Resorbable membranes

Made from processed collagen (bovine or porcine derived), resorbable membranes dissolve naturally over 4–12 weeks as healing progresses. No second surgery is needed to remove them. They are used for the vast majority of routine grafting procedures.

Non-resorbable membranes (PTFE)

Made from PTFE (a synthetic polymer), these membranes remain in place until deliberately removed at a planned second procedure. They provide a more rigid barrier for larger augmentations but require a second surgery and carry a higher risk of complications if exposed prematurely.

Titanium-reinforced membranes

For very large volume augmentations, membranes reinforced with titanium mesh can be used. The rigid structure creates and maintains a large space for bone to grow into — useful for reconstructing severely resorbed ridges.