Multitier technique for bone augmentation using intraoral autogenous bone blocks.

PURPOSE Intraoral bone grafts are a convenient and acceptable source of autogenous bone for alveolar reconstruction due to bone origin similarity and less morbidity. In large bone defects, 1 tier might be insufficient to achieve the desired bone shape. The purpose of this article was to describe a multitier technique for reconstruction of extensive bone deficiency, using only intraoral block bone grafts for implant site augmentation. MATERIALS After clinical and radiographic evaluation of the recipient site, measurements were taken to determine the size of the bone deficiency. The first tier of bone graft was harvested from the mandibular ramus. After additional clinical and radiographic evaluation of the recipient site 5 months later, bone graft blocks for the second tier were harvested either from the second ramus or the mandibular symphysis. CONCLUSIONS A new technique, the multitier intraoral bone block graft, for the future use of dental implants, is described. This technique can serve as an optional operation procedure for extensively atrophic alveolar bone augmentation.