Sunjai Kim is a professor at college of dentistry, Yonsei university, Republic of Korea. He is a vice dean of Yonsei university college of dentistry. He is also the vice president of the Korean academy of prosthodotics. He served as academic director at the Korean academy of oral and maxillofacial implantology and the Korean academy of digitalized dentistry. He graduated from Yonsei university and also completed both his master's degree and Ph.D. from Yonsei university. His research interests include mechanical properties of biomaterials related to dental CAD/CAM system, hard and soft tissue response around dental implants, and machining accuracy of dental implants.