| 1/ 7/1955 | Permission of the first Department of Pediatric Dentistry in Japan |
| 16/ 3/1956 | The 1st Professor, Dr. Yamashita |
| 1/5/1956 | Establishment of Department of Pediatric Dentistry |
| 31/ 3/1977 | The 1st Professor, Mandatory retirement |
| 1/ 4/1977 | The 2nd Professor, Dr. Ono |
| 31/ 3/1996 | The 2nd Professor, Mandatory retirement |
| 1/ 2/1997 | The 3rd Professor, Dr. Takagi |
| 1/ 4/2000 | Developmental Oral Health Science, Department of Orofacial Development and Function, Division of Oral Health Sciences, Graduate School, Tokyo Medical and Dental University |