Schedule 1 [P-15] Clinical Study on the effectiveness of tissue conditioner containing cetylpyridinium chloride montmorillonite *Toshifumi Nogawa1,2, Asuka Kodama1, Rumi Horiuchi1, Atsuro Yokoyama1 (1. Department of Oral Functional Prosthodontics, Division of Oral Functional Science, Faculty of Dental Medicine, Hokkaido University, 2. Tohoku-Hokkaido Branch)