Zhang Dongsheng, male, chief physician, professor and doctoral supervisor. Born in September, 1963, Ningjin, Shandong. He is currently the director of stomatology center of Shandong Provincial Hospital and the leader of oral and maxillofacial surgery department. He is good at comprehensive sequential treatment of oral and maxillofacial malignant tumors, functional and morphological repair of oral and maxillofacial defects, oral and maxillofacial trauma plastic surgery, maxillofacial plastic surgery and cosmetic repair, implant repair of various tooth defects and craniofacial implantation, diagnosis and treatment of hemangioma and trigeminal neuralgia, and diagnosis and treatment of other difficult and serious diseases in oral and maxillofacial surgery.