Dr. Zuoqing Dong’ s positions include director of Shandong Stomatological Association, member of Implantation and Tumor Management Branch of Shandong Stomatological Association and member of Shandong Stomatologist Association. He is good at dental implantation, extraction of impacted teeth and other alveolar surgery, orthognathic surgical treatment of oral and maxillofacial deformities, reconstructive treatment of complex maxillofacial fractures, and surgical treatment of oral and maxillofacial tumors.