1. Department of Cariology and Operative Dentistry Graduate School of Medical and Dental Sciences Tokyo Medical and Dental University Tokyo Japan
2. Department of Preventive and Restorative Dentistry College of Dental Medicine University of Sharjah Sharjah United Arab Emirates
3. Department of Bio‐Matrix (Dental Pharmacology), Graduate School of Medical and Dental Sciences Tokyo Medical and Dental University Tokyo Japan
4. Ras Al Khaimah College of Dental Sciences Ras Al Khaimah Medical and Health Sciences University Ras Al Khaimah United Arab Emirates
5. Department of Operative Dentistry Division of Oral Functional Sciences and Rehabilitation School of Dentistry Asahi University Gifu Japan