1. Department of Oral and Maxillofacial Prosthodontics; Institute of Health Biosciences; The University of Tokushima Graduate School; Tokushima Japan
2. Department of Oral Microbiology; Institute of Health Biosciences; The University of Tokushima Graduate School; Tokushima Japan
3. Department of Conservative Dentistry; Institute of Health Biosciences; The University of Tokushima Graduate School; Tokushima Japan