1. Department of Restorative Dentistry and Endodontology, Graduate School of Medical and Dental Sciences Kagoshima University Kagoshima Japan
2. Division of Oral and Maxillofacial Surgery Kaohsiung Medical University Hospital Kaohsiung Taiwan
3. School of Dentistry, College of Dental Medicine Kaohsiung Medical University Kaohsiung Taiwan
4. Division of Tissue Engineering & Department of Oral‐Maxillofacial Surgery The University of Tokyo Hospital Tokyo Japan
5. Department of Health Taipei City Government Taipei Taiwan
6. Department of Oral Hygiene Hsin‐Sheng Junior College of Medical Care and Management Taoyuan Taiwan
7. Taiwan Society of Oral Health Keelung Taiwan