1. Department of Orthodontics, School of Dental Medicine, Tsurumi University, Yokohama, Japan

2. Department of Oral and Maxillofacial Surgery, School of Dental Medicine, Tsurumi University, Yokohama, Japan

3. Department of Endodontology, School of Dental Medicine, Tsurumi University, Yokohama, Japan

4. Department of Crown and Bridge Prosthodontics, School of Dental Medicine, Tsurumi University, Yokohama, Japan