Introduction: This study was to evaluate the safety of zygomatic bone harvesting and to determine whether a particulated zygomatic bone graft can be used simultaneously with dental implants to reconstruct edentulous alveolar ridges. Study design: Particulated zygomatic bone was used to harvesting bone for implantation. The intraoperative complications, morbidity, and complications on follow-up visits were recorded. Results: as a harvest site , the zygomatic yielded enough bone to complete the reconstructions in each case. Main intraoperative complication was perforation of the maxillary sinus. But this perforation not led to postoperative problems. No paresthesias or other complications were noted during follow-up examinations. Conclusions: Zygomatic bone is an alternative donor site for bone harvesting with low morbidity. The bone graft yielded is sufficient for use in 2 or 3 implant site. The zygoma was a safe intraoral bone harvesting donor site. But when sinus bone graft, maxillary sinus perforation may occurs, so we must be careful in these cases. The use of simultaneous particulated zygomatic bone graft appears to be an effective procedure.