Sandwich bone augmentation for predictable horizontal bone augmentation

There is much evidence in the literature to support the success and predictability of guided bone regeneration. Multiple techniques have been introduced using various types of membranes and bone grafting materials. The clinician is now faced with having to select the most predictable guided bone regeneration technique put forth within this extensive literature. Within this context and in addition to its demonstrated success, the "sandwich" bone augmentation technique creates an environment that mimics native bone and promotes regeneration. Its concept is based on a sound biologic rationale while providing flexibility in the selection of biomaterials. This article discusses the principles, the complications, and a step-by-step protocol of sandwich bone augmentation.