An epidemiologic examination on the prevalence of the periodontal diseases and oral pigmentation in Yusho patients

Isamu Hashiguchi, Y. Toriya, H. Anan, K. Maeda, A. Akamine, M. Aono, H. Fukuyama, H. Okumura

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Abstract

An epidemiologic examination was carried out to reveal the prevalence of the periodontal diseases and oral pigmentation in Yusho patients 26 years after PCB exposure. The results obtained were as follows. 1) 158 teeth of the total 284 examined teeth had the periodontal pockets deeper than 3 mm and the lower left first molar showed the highest prevalence of the periodontal pocket among the examined six index teeth. There was no definitive difference not only between sexes but also between age groups. However, 42 teeth had the periodontal pockets deeper than 4 mm. 2) Oral pigmentation was observed in 25 Yusho patients (33.8%). Chronological examination revealed that the prevalence of oral pigmentation seemed to be higher in the patients below the age of 49 than in those beyond the age of 50, but there was no definitive difference between sexes. It was of particular interest that the incidence of oral pigmentation appeared to decrease with decrease of the teeth present in number.

Original languageEnglish
Pages (from-to)256-260
Number of pages5
JournalFukuoka igaku zasshi = Hukuoka acta medica
Volume86
Issue number5
Publication statusPublished - Jan 1 1995

All Science Journal Classification (ASJC) codes

  • Medicine(all)

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    Hashiguchi, I., Toriya, Y., Anan, H., Maeda, K., Akamine, A., Aono, M., Fukuyama, H., & Okumura, H. (1995). An epidemiologic examination on the prevalence of the periodontal diseases and oral pigmentation in Yusho patients. Fukuoka igaku zasshi = Hukuoka acta medica, 86(5), 256-260.