A related procedure to ridge augmentation grafting is known as ridge expansion. This may also be performed at the time of implant placement surgery, or as a distinct first surgery to prepare the site to receive implants of appropriate diameter. Sometimes this may be completed with the use of bone graft materials to maintain the space that has been created, or it may be performed without the use of grafting material. In a ridge expansion procedure, the jaw bone in the treatment area is divided from front to back and the inner and outer segments of bone are wedged apart. This creates a space between the divided sections of jaw bone that will fill with new bone. This enables your dentist to increase the width of available bone to an appropriate size to accept implants – thereby replacing your missing teeth.