Nihon Shishubyo Gakkai Kaishi (Journal of the Japanese Society of Periodontology)
Online ISSN : 1880-408X
Print ISSN : 0385-0110
ISSN-L : 0385-0110
Epidemiological Study of Periodontal Disease in an Island in Nagasaki Prefecture (I)
Yusuke KOWASHIKojiro URAMitsuhiro SHIMIZUTakashi NAGAMATSUIhachi KATONozomu KAWASHIMA
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1983 Volume 25 Issue 4 Pages 843-849

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Abstract
In Nagasaki Prefecture there are fifty-three islands, the population of which is less than one thousand. It is difficult to have their own doctor or dentist in such areas. Therefore medical service for such an island is an important problem by which Nagasaki Prefecture confronted.
We participated in the medical examination held in Enoshima, one of such small islands in Nagasaki Prefecture, to investigate the oral state. The purpose of this study was to obtain the basic data of their oral condition in such a small island.
Oral survey on 313 inhabitants were carried out by two examiners. One of them examined dental caries and the other periodontal disease.
The results were as follows:
1. The average number of missing teeth in middle and upper age bracket in inhabitants in Enoshima increased rapidly with age and was much higher than the mean value of the Japanese.
2. Mean G. I. and P. I. of both men and women between the age of 10 and 19 showed minimum value. Mean G. I. increased with age and showed the highest value in women aged from 70 to 79.
3. Mean values of the pocket depth of each subject in the younger generation were nearly less than 2 millimeter. The values increased with age. In the middle and upper age bracket the proportion of the subject with the pocket depth from 2 to 4 millimeter was the largest.
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© The Japanese Society of Periodontology
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