Grafting Vertical Osseous Deficiency?


What would be the suggested way of grafting bone in a vertical osseous deficiency ( ridge dip) between a second bicuspid and second molar in a mandible? In this particular case, the tooth is missing for many years and the patient would like to replace the tooth with an implant. The vertical deficiency at the lowest point is about 5 to 6 mm. Obviously there is a simple restorative solution by adding gingival colored porcelain to the crown, but that is not the issue.