In some cases, the ridge of the jaw bone has adequate depth but lacks proper width due to atrophy (thin ridge). Ridge augmentation is a technique used to restore the lost bone dimension when the jaw ridge gets too thin to place conventional implants.
In this procedure, the bony ridge of the jaw is separated into two sections and is literally expanded by mechanical means. Bone graft material can then be placed into a crevice between the two walls of bone. The bone is allowed to mature for a few months before placing the implant.