From 2008-2011 the authors have done autogenous block bone graft for 49 patients for implant placement including 28 men and 21 women, aged 18 to 61 years old since 2008-2011. Doner site: Autogenous block bone grafts were harvested from symphysis, retromolar region and iliac crest in 22, 15 and 12 patients, respectively. A total of 79 block bone grafts (24 verticals and 55 horizontals) were used to augment 49 severe alveolar ridge defect. There are 101 implants placed in 79 sites of bone augmentation. All of the implants had primary stability (35N/cm), 100 percent implant survival (no implant failed). Follow-up period time: 10.5 months. There are 78 out of the 79 graft pieces success 98.7 percent, 1 failed 1.3 percent. There are 73 out of the 79 recipient have enough bone to place implant no need add itiona I bone graft 92 percent. The remaining 5 recipient site needed additional grafts at the time of implant placement 6.3 percent (these 5 recipient had received block bone grafts from the iliac crest, while no recipient sites that had been grafted with bone harvested from the symphysis or from retromolar region needed additional grafts).
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