台湾高地に居住する Ami 族と Bunun 族の歯牙・歯周疾患に関する疫学的研究

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The extent of incidence of dental disease in the Taiwan mountain aborigines has been a subject of interest. Little, however, has been reported because of the geographical peculiarity. A study on the Ami and Bunun tribes was therefore made in December 1979. A total of 345 subjects, 168 males and 177 females, from 9 to 30 in age were studied on their teeth and the oral environment. The results were as follows : 1. The average number of the erupted permanent teeth was significantly higher (p<0.01) in the females than in the males for the ages from 9 to 12. 2. The percentage of persons with one or more DMF teeth showed a decreasing tendency with an increase in age in the males and a minimum of 61.11±11.49 was observed for the ages from 16 to 30. A similar tendency was also observed in the females. The males showed a significantly lower value (p<0.01) than the females. 3. The DMF rate showed a decreasing tendency in the males with an increase in age and a minimum of 9.85±1.27% was observed for the ages from 16 to 30. In the females, the rate was fairly constant at 20-23% despite an increase in age. The males showed significantly lower values (p<0.01) than the females for each age group. 4. The number of DMFT was significantly lower (p<0.01) in the males than in the females for each age group. At the ages from 9 to 15, most DMFT were DT (decayed teeth) in both males and females. At the ages from 16 to 30, 75% or more of DMFT were DT (decayed teeth). 5. The number of DMFS tended to increase in both males and females with an increase in age. A maximum was 6.72±2.29 in the males and 17.12±2.70 in the females at the ages from 16 to 30. The males showed significantly lower values (p<0.01) than the females for each age group. 6. The OHI was significantly higher (p<0.01) in the males than in the females at the ages from 13 to 15. 7. The PMA index showed an increasing tendency with an increase in age in both males and females. At the ages from 16 to 30 in particular, marked prevalence of gingivitis was evidenced by 6.00±1.19 in the males and 6.08±0.90 in the females. The females showed a significantly higher value (p<0.01) than the females at the ages from 13 to 15. On the basis of the foregoings, both low incidence of caries (higher age group) and high incidence of caries (lower age group) were observed at the same time in the Ami and Bunun tribes. The transitional stage was estimated to be around 15 years old.
九州歯科学会の論文
1982-08-25

台湾高地に居住する Ami 族と Bunun 族の歯牙・歯周疾患に関する疫学的研究

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