*Masana Maeda¹, Taihiko Yamaguchi², Masanori Baba², Miku Saito², Akihito Gotouda³, Saki Mikami³, Tomoya Ishimaru¹ (1. Department of Crown and Bridge Prosthodontics, Hokkaido University Hospital, 2. Department of Crown and Bridge Prosthodontics, Faculty of Dental Medicine, Hokkaido University, 3. Department of Temporomandibular Disorders, Center for Advanced Oral Medicine, Hokkaido University Hospital)