1. Professor and Chair, Department of Orthodontics, School of Dentistry, Asahi University, Gifu, Japan.
2. Assistant Professor, Department of Orthodontics, School of Dentistry, Asahi University, Gifu, Japan.
3. Graduate student, Department of Orthodontics, School of Dentistry, Asahi University, Gifu, Japan.
4. Senior Lecturer, Department of Orthodontics, School of Dentistry, Asahi University, Gifu, Japan.
5. Professor, Gifu Shotoku Gakuen University Junior College, Gifu, Japan.
6. Assistant Professor, Department of Oral Radiology, School of Dentistry, Asahi University, Gifu, Japan.
7. Professor and Chair, Department of Oral Radiology, School of Dentistry, Asahi University, Gifu, Japan.