1. Department of Prosthodontics, Dental Research Institute, School of Dentistry, Pusan National University, Yangsan, Republic of Korea.
2. Woorimi Dental Clinic, Busan, Republic of Korea.
3. Department of Pediatric Dentistry, Dental Research Institute, School of Dentistry, Pusan National University, Yangsan, Republic of Korea.
4. Dental Research Institute and Department of Biomaterials Science, School of Dentistry, Seoul National University, Seoul, Republic of Korea.
5. EZ Plant, Seoul, Republic of Korea.