Tehran University of Medical Sciences Journal of Craniomaxillofacial Research 2345-5489 5 4 2019 06 10 157 163 Abbas Karimi Department of Oral and Maxillofacial Surgery, Craniomaxillofacial Research Center, Tehran University of Medical Sciences, Tehran, Iran. Hamid Mahmood Hashemi Department of Oral and Maxillofacial Surgery, Craniomaxillofacial Research Center, Tehran University of Medical Sciences, Tehran, Iran. Farnoosh Razmara Department of Oral and Maxillofacial Surgery, Craniomaxillofacial Research Center, Tehran University of Medical Sciences, Tehran, Iran. 2019 01 06 2019 04 09 Aim: Bone grafting plays a pivotal role in reconstruction of atrophic ridge in dental implants.This study made a comparison of the efficacy of allogenic and autogenic (iliac) bone grafting using  the same technique (interpositional bone grafting) in increasing the mandibular anterior height. Materials and Methods: Ten partially edentulous patients who required vertical bone augmentation of the anterior mandible (having a residual ridge with 10 to 12 mm) were randomly  allocated to autograft (iliac) and allograft groups. The heights of ridges were measured at three points (Right, Left, and Middle) using preoperative panoramic radiography three and six months  following grafting. Results: The heights of ridges increased in all patients, but there was no significant difference between the two groups. Conclusion: This study indicated autograft and allograft had similar effects on vertical augmentation. https://jcr.tums.ac.ir/index.php/jcr/article/view/263 https://jcr.tums.ac.ir/index.php/jcr/article/download/263/251