[An epidemiologic examination on the prevalence of the periodontal diseases and oral pigmentation in Yusho patients in 2010].

An epidemiologic examination was carried out to reveal the prevalence of the periodontal diseases and oral pigmentation in patients with Yusho in 2010. The results obtained were as follows. 1) Yusho patients complained of tooth pain and periodontal diseases such as gingival swelling, but not of oral pigmentation.

[An epidemiologic examination on the prevalence of the periodontal diseases and oral pigmentation in Yusho patients in 2008].

An epidemiologic examination was carried out to reveal the prevalence of the periodontal diseases and oral pigmentation in patients with Yusho in 2008. The results obtained were as follows. 1) Yusho patients complained of tooth pain and periodontal diseases such as gingival swelling, gingival bleeding, but not of oral pigmentation.

[Epidemiologic examination on the prevalence of the periodontal diseases and oral pigmentation in Yusho patients in 2006].

An epidemiologic examination was carried out to reveal the prevalence of the periodontal diseases and oral pigmentation in patients with Yusho in 2006. The results obtained were as follows. (1) 98 patients out of 106 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.

An epidemiologic examination on the prevalence of the periodontal diseases and oral pigmentation in Yusho patients in 2002.

An epidemiologic examination was carried out to reveal the prevalence of the periodontal diseases and oral pigmentation in patients with Yusho. The results obtained were as follows. 1) 95 patients out of 110 patients, who were examined periodontal pocket depth using Ramfjord' methods, had at least one tooth with periodontal pocket deeper than 3 mm.