1. Department of Periodontology, Gangneung-Wonju National University College of Dentistry, Gangneung, Korea.
2. Department of Anatomy, Gangneung-Wonju National University College of Dentistry, Gangneung, Korea.
3. Research Institute for Dental Engineering, Gangneung-Wonju National University, Gangneung, Korea.
4. Department of Metal and Materials Engineering, Gangneung-Wonju National University, Gangneung, Korea.
5. Wellnanos Co., Ltd., Gangneung, Korea.