Arash Khojasteh is full Professor and chairman in the department of oral and maxillofacial surgery at Shahid Beheshti university of Medical Sciences, Tehran, Iran. He is guest professor in the department of health and medical sciences at University of Antwerp, Belgium. He is also head of dental research center in Iranian Institute for dental research. Dr. Khojasteh is a graduate of Tehran University of Medical Sciences. He has got his degree in oral and maxillofacial surgery from Shahid Beheshti University of Medical Sciences and his PhD in Tissue Engineering from Antwerp University in Belgium. He is a Diplomate of the Iranian Board of Oral and Maxillofacial Surgery. He has co-authored many peer reviewed articles, abstracts, and textbook chapters. His areas of research have included bone augmentation, bone regeneration, and stem cell therapy . Dr khojasteh is director of national board of Tissue engineering and Applied Cell Sciences. He has got 3 president awards as the best young researcher and best student in Iran in last 15 years.