Horizontal posterior ridge augmentation: the use of a collagen membrane over a bovine particulate graft: technique note.

The purpose of this technique note is to describe an improvement of a previously published method to augment the thin posterior mandibular ridge. The technique uses a subperiosteal tunnel to place a collagen membrane within the tunnel to maintain the shape of the augmentation. After the collagen membrane has been placed, a sintered xenograft is packed as an onlay graft, with implant placement 6 to 9 months later.