1. Department of Dental Biomaterials, Institute of Oral Bioscience and Institute of Biodegradable Material, BK21 Plus Project, School of Dentistry, Chonbuk National University, Jeonju, Republic of Korea.
2. Odonto-stomatology Faculty, Hue University of Medicine and Pharmacy, Hue University, Hue City, Vietnam.
3. Department of Pediatric Dentistry and Institute of Biodegradable Material, School of Dentistry, Chonbuk National University, Jeonju, Republic of Korea.
4. Plant Dental Clinic, Daejeon, Republic of Korea.