戦前・戦後のわが国学童の齲歯の比較
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概要
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The professional whole national research about a tooth on Japanese school children had been taken three times until to-day, namely; special research about a tooth by the Ministry of Education in 1940, sumpling research by Dental Caries Investigating Group sponsared by Science Investigation Expense of the Ministry of Education in 1950, real condition research about dental disease by the Ministry of Welfare in 1957.<BR>Author mainly studied about the difference on the condition of the caries prevalence with those result of the researches, and could explained it with an opinion that “the sugar consumption and the caries incidence has momentarily extremely close relation” which was pointed out by Takeuchi and Takahashi.<BR>Namely:<BR>1. The number of decayed deciduous teeth and caries rates on the cases that had been checked in 1950 are extremely reduced in between 6-8 years old, and in 9 to 11 years of age it showed only a slight difference between the cases of 1950 and both 1940 and 1957, according to their living history, will be explained with the fact that in children of 9 to 11 years old in the year of 1950 had been affected by a sugar consumption even after the dentition of the deciduous teeth but in the 6 to 8 years of age children had had only a little influence.<BR>2. The reason of the fact that an average number of decayed teeth, and caries rates per head of the permanent tooth on the cases in 6-11 years of which had been checked in 1950 are extremely reduced in comparison with the cases in both years of 1940 and 1957, according to their living history, will be explained with the fact that had been affected only a little by sugar consumption even after the dentition of permanent teeth in any ages on the case in the year of 1940.<BR>3. The reason of the fact that it has a slight difference on the average number of decayed teeth between cases in the year of 1957 and 1940, according to their living history, will be explained with the fact that had been affected with enough sugar consumption for developing the caries tooth until 1957 after the dentition of both deciduous and parmanent tooth in any ages on the cases in the year of 1957.
- 有限責任中間法人 日本口腔衛生学会の論文