1. School of Dentistry and Graduate Program of Dental Science, College of Dental Medicine, Kaohsiung Medical University Kaohsiung Taiwan
2. Department of Dentistry (Orthodontics)Kaohsiung Municipal Hsiao‐Kang Hospital Kaohsiung Taiwan
3. Department of Oral and Maxillofacial Surgery, Faculty of DentistryKaohsiung Medical University Hospital Kaohsiung Taiwan
4. Institute of Oral Medicine, National Cheng Kung University Tainan Taiwan
5. Department of Prosthodontics, Faculty of DentistryKaohsiung Medical University, Hospital Kaohsiung Taiwan