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  • Title: [An epidemiologic examination on the prevalence of the periodontal diseases and oral pigmentation in Yusho patients in 2000].
    Author: Hashiguchi I, Yamaza T, Koishi Y, Goto Y, Yoshimine Y, Akamine A, Fukuyama H, Okumura H.
    Journal: Fukuoka Igaku Zasshi; 2001 May; 92(5):115-9. PubMed ID: 11452507.
    Abstract:
    An epidemiologic examination was carried out to reveal the prevalence of the periodontal diseases and oral pigmentation in patients with Yusho in 2000. The results obtained were as follows. 1) 63 patients out of 69 patients with Yusho, who were measured periodontal pocket depth according to Ramfjord' methods, had at least one tooth with periodontal pocket deeper than 3 mm. Similarly, 188 teeth out of a total 285 examined teeth showed periodontal pocket with more than 3 mm depth. 2) In this examination, intraoral sinus tracts stoma were observed in 9 patients out of 70 patients. Radiographic examination and probing examination of pocket depth indicated that periapical lesions were involved in these intraoral sinus tract formation. 3) Oral pigmentation was observed in 46 out of 76 patients with Yusho. In this study, gingival pigmentation was most predominant among oral pigmentation. These results indicated that PCBs had yet affected the mechanism of oral pigmentation and metabolism of alveolar bone.
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