1. School of Dentistry Taipei Medical University Taipei Taiwan
2. Center for Teeth Bank and Dental Stem Cell Technology Taipei Medical University Taipei Taiwan
3. Department of Dentistry Taipei Tzu Chi Hospital Buddhist Tzu Chi Medical Foundation Xindian Taiwan
4. Department of Oral Hygiene Hsin‐Sheng Junior College of Medical Care and Management Taoyuan City Taiwan
5. Department of Periodontology School of Dentistry National Defense Medical Center and Tri‐Service General Hospital Taipei Taiwan
6. Department of Dentistry Wan Fang Hospital Taipei Medical University Taipei Taiwan