GBR (Guided Bone Regeneration)
Also known as: Membrane, barrier membrane, bone regeneration, GTR
A technique using a membrane barrier to help bone grow where it is needed.
Guided Bone Regeneration (GBR) is a surgical technique that uses a barrier membrane to create a protected space over a bone graft or defect, preventing soft tissue (gum) from growing into the space before bone has had time to form.
The principle
Bone cells regenerate slowly; soft tissue cells migrate much faster. Without a barrier, soft tissue would fill a grafted space before bone could form. The membrane acts as a wall, keeping soft tissue out and allowing bone to regenerate undisturbed within the protected compartment.
Types of membrane
- Resorbable membranes: Made from collagen (bovine or porcine derived) or synthetic polymers. Dissolve on their own over weeks to months. No second surgery needed for removal.
- Non-resorbable membranes: Made from PTFE (a type of plastic). Remain permanently unless removed at a planned second procedure. Used for more complex, large-volume augmentations.
When is GBR used?
GBR is used whenever a bone graft is placed — socket preservation, ridge augmentation, around exposed implant threads, and sinus lift procedures all typically involve a membrane.
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