Affiliation: | Y. Huang, Department of Orthodontics, Hospital of stomatology, Luzhou Medical College, Luzhou, China Y. Huang, L. Keilig, A. Rahimi, C. Bourauel, Oral Technology, School of Dentistry, University of Bonn, Bonn, Germany L. Keilig, S. Reimann, Department of Prosthetic Dentistry, Preclinical Education and Materials Science, School of Dentistry, University of Bonn, Bonn, Germany S. Reimann, Department of Orthodontics, School of Dentistry, University of Bonn, Bonn, Germany |