沖縄中部地区の中・高校生の歯牙・歯肉疾患に関する疫学的研究
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概要
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An epidemiological fact-finding investigation was carried out in September 1975 of tooth and gingival diseases in 1, 276 junior and senior high school pupils, aged 12 to 18, in the central Okinawa. The following findings of interest were obtained : 1. Significant differences in the average numbers of erupted teeth for the male and female were found across-the-board and in ages 14 and 17. The female tended to have earlier eruption than the male. 2. Significant differences in the average DMFT count were found across-the-board and in ages 12, 15, 16, 17, and 18. The female tended to have higher counts than the male. 3. Significant differences in the average FT count for the male and female were found across-the-board and in ages 16, 17, and 18. The female tended to have higher counts. 4. Significant differences in the prevalence rate of dental caries and the DMFT rate for the male and female were found across-the-board. The female tended to have higher rates. 5. Significant differences in the FT rate for the male and female were found in ages 16, 17, and 18. The female tended to have higher rates. 6. Significant differences in the FT teeth count rate for the male and female were found across-the-board and in ages 17 and 18. The female tended to have higher rates. 7. In the average DMFT count, DT count, and MT count for the male and female of Okinawa and of Kitakyushu, significant differences were found across-the-board and by age for both male and female. The male and female of Okinawa tended to have higher counts in each category than those of Kitakyushu. 8. In the DMFT rate for the male and female of Okinawa and of Kitakyushu, significant differences were found across-the-board and by age. The male and female of Okinawa tended to have higher rates in each category. 9. In the FT rate, significant differences were found across-the-board and by age, excluding ages 12 and 15 of the male, for both male and female. 10. In the OHI of Okinawa male and female, significant differences were found across-the-board and by age, excluding ages 14 and 18. The male tended to have higher rates. 11. No significant difference between the sexes was found in PMA index, P index, and M index for Okinawa male and female. However, in A index, significant differences were found across-the-board and in ages 14 and 15. The female tended to have higher rates. 12. In the OHI and PMA index of Okinawa male and female, a positive correlation was found between the male and female in each age group, excluding age 18 of female, for both male and female. On the basis of the foregoings, the female had higher incidence rates of dental caries than the male in Okinawa, and, at the same time, tended to have higher rates of treatment. The male tended to be worse in oral cleanliness and in adhesion of deposits. No great difference was observed in the state of gingiva between the sexes. Severer gingivitis however tended to occur more frequently in the female. Compared with Kitakyushu male and female, Okinawa male and female both had more dental caries, had higher incidence rates of dental caries, and tended to be lower in the rate of treatment.
- 九州歯科学会の論文