1. Department of Dentistry; Graduate School; Kyung Hee University; Seoul Korea
2. Center for Bionics; Korea Institute of Science and Technology (KIST); Seoul Korea
3. Division of Fixed Prosthodontics and Biomaterials; Clinique of Universitaire Medicine Dentaire; University of Geneva; Geneva Switzerland
4. Department of Biomaterials & Prosthodontics; Kyung Hee University Hospital at Gangdong; School of Dentistry; Kyung Hee University; Seoul Korea
5. School of Mechanical Engineering; Kyungpook National University; Daegu Korea