1. Shino Amano, DDS, junior instructor, Nihon University, School of Dentistry, Department of Operative Dentistry, Tokyo, Japan
2. Akira Yamamoto, DDS, graduate student, Nihon University School of Dentistry, Department of Operative Dentistry, Tokyo, Japan
3. Keishi Tsubota, DDS, PhD, instructor, Nihon University School of Dentistry, Department of Operative Dentistry, Tokyo, Japan
4. Akitomo Rikuta, DDS, PhD, instructor, Nihon University School of Dentistry, Department of Operative Dentistry, Tokyo, Japan
5. Masashi Miyazaki, DDS, PhD, professor and chairperson, Nihon University School of Dentistry, Department of Operative Dentistry, Tokyo, Japan
6. Jeffrey A Platt, DDS, MS, associate professor, director of Dental Materials, Department of Restorative Dentistry, Division of Dental Materials, Indiana University School of Dentistry, Indianapolis, IN, USA
7. B Keith Moore, PhD, professor, director of Graduate Dental Materials, Department of Restorative Dentistry, Division of Dental Materials, Indiana University School of Dentistry, Indianapolis, IN, USA