1. Department of Orthodontics, Institute of Craniofacial Deformity, Yonsei University College of Dentistry, 50-1 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea
2. Department of Biologic & Materials Sciences & Prosthodontics, University of Michigan School of Dentistry, 1011 N. University Ave., Ann Arbor, MI 48109, USA
3. Department of Mechanical Engineering, Yonsei University, Seoul, 03722, Republic of Korea
4. BK21 FOUR Project, Yonsei University College of Dentistry, 50-1 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea
5. Department and Research Institute of Dental Biomaterials and Bioengineering, Yonsei University College of Dentistry, 50-1 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea