Remaining Teeth by Age (in Japan)
Ministry of Health, Labour and Welfare conducts surveys about health of teeth every 5 years. Last time the survey was conducted in 2011. The table shows the mean number of remaining teeth by age.
| Total | Men | Women | ||||
| Age group |
Number of subjects | Mean number of present teeth | Number of subjects | Mean number of present teeth | Number of subjects | Mean number of present teeth |
| Total | 4,098 | 21.6 | 1,728 | 21.3 | 2,370 | 21.9 |
| 5～ 9 | 210 | 8.9 | 101 | 7.9 | 109 | 9.7 |
| 10～14 | 170 | 22.8 | 87 | 21.9 | 83 | 23.9 |
| 15～19 | 113 | 27.9 | 55 | 28.1 | 58 | 27.8 |
| 20～24 | 89 | 28.1 | 32 | 28.3 | 57 | 27.9 |
| 25～29 | 122 | 28.7 | 45 | 29.3 | 77 | 28.3 |
| 30～34 | 193 | 28.5 | 73 | 28.7 | 120 | 28.4 |
| 35～39 | 271 | 28.3 | 104 | 28.3 | 167 | 28.4 |
| 40～44 | 227 | 27.8 | 81 | 27.6 | 146 | 27.9 |
| 45～49 | 210 | 27.1 | 76 | 27.1 | 134 | 27.1 |
| 50～54 | 257 | 25.9 | 97 | 25.8 | 160 | 25.9 |
| 55～59 | 286 | 24.4 | 116 | 24.3 | 170 | 24.4 |
| 60～64 | 440 | 22.5 | 187 | 23.0 | 253 | 22.2 |
| 65～69 | 395 | 21.2 | 167 | 21.0 | 228 | 21.4 |
| 70～74 | 444 | 17.3 | 202 | 17.7 | 242 | 17.0 |
| 75～79 | 340 | 15.6 | 163 | 15.3 | 177 | 15.9 |
| 80～84 | 225 | 12.2 | 103 | 13.6 | 122 | 11.0 |
| 85～ | 106 | 8.4 | 39 | 9.2 | 67 | 8.0 |
Source is Ministry of Health, Labour and Welfare.
www.mhlw.go.jp/toukei/list/62-17c.html
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