歯牙健否と体格及び体力との関係

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  • TOOTH HEALTH STATUS WITH RELATION TO ONE'S PHYSIQUE AND PHYSICAL CAPACITIES

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Although much evidence is available which has established positive correlation between one's tooth health status and his physique, there seems to be no adequate information as to possible correlation between one's tooth replacement and his physical capacities as direct function of his physique. Physical examinations have been carried out on a total of 2140 subjects of both sexes ranging in age from 6 to 14 years, all residing in Miyakonojyo city in Miyazaki prefecture, with regard to their physique (body height, body weight and chest girth) and their physical capacities as measured by 50-meter-running, standing broad jumping and soft ball pitching. On the basis of the means and standard deviations obtained from the examinations, the subjects of each sex and age group were divided into three grades groups of which A group representing the value of mean+standard deviation, B group mean±standard deviation and C group mean-standard deviation and to each of these groups were respectively allotted the examination mark of +one point, zero point and-one point. The sums of the points obtained for physique, physical capacities were respectively called the physique and physical capacities points and the sum of the latter two was called theit composite point. Correlations existing between individual's tooth status including the tooth replacement and tooth decay and his physique and physical capacities were studied in every groups for every items examined, and the results obtained were summarized as follows. 1) It was revealed that those subjects having excellent marks in the physique and physical capacities, in the physique and physical capacities points and in the composite points, had fewer number of existing deciduous teeth and greater number of erupted permanent teeth, suggesting that the tooth replacement had close relation with the development of general physique and physical capacities. 2) Study on the correlation between the incidence of tooth decay as examined on the basis of df +DMF and C_3+M and the physique, physical capacities, physique and physical capacities points and the composite points in A and C groups revealed that C_3+M was greater than df+DMF, suggesting that those having greater number of tooth decay had inferior physique and physical capacities. It was concluded that the tooth decay, especially that represented by C_3 and M had close correlation with individual's physique and physical capacities in the school age population under rapid physical development.

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