1. Research Associate, Department of Removable Prosthodontics. From The University of Tokushima, School of Dentistry, Tokushima, Japan.
2. Chief Dental Technician, Dental Laboratory, University Dental Hospital. From The University of Tokushima, School of Dentistry, Tokushima, Japan.
3. Professor and Chairman, Department of Removable Prosthodontics. From The University of Tokushima, School of Dentistry, Tokushima, Japan.