Tehran University of Medical Sciences Frontiers in Dentistry 2676-296X 17 0 2020 08 03 3267 3267 Isa Abdi Dental Science Research Center, Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Guilan University of Medical Sciences, Rasht, Iran Donya Maleki Student Research Committee, Faculty of Dentistry, Guilan University of Medical Sciences, Rasht, Iran 2019 08 25 2020 03 06 Implant insertion into an atrophic knife-edge ridge with non-simultaneous extraction of anterior and posterior teeth is challenging; this is why bone regeneration before implant placement is of great importance. One of the best sources for reconstruction is an intraoral autogenous bone graft. A composite bone graft is a combination of autogenic bone and mucosal flap that provides adequate blood supply and fixation compared to conventional (from the mandibular symphysis or ramus) and extraoral bone grafts. https://fid.tums.ac.ir/index.php/fid/article/view/3267 https://fid.tums.ac.ir/index.php/fid/article/download/3267/1802