1. Department of Operative Dentistry, Endodontology and Periodontology Matsumoto Dental University Shiojiri Nagano Japan
2. Division of Hard Tissue Research, Institute for Oral Science Matsumoto Dental University Shiojiri Nagano Japan
3. Bioindustry Division Oriental Yeast Co., Ltd. Tokyo Japan
4. The Lion Foundation for Dental Health Tokyo Japan
5. Department of Biochemistry Matsumoto Dental University Shiojiri Nagano Japan